甲基膦酸二苯酯

反应条件: temp:0.00; pressure:0.00; stir:; See reaction.notes.procedure_details.

实验步骤: A reactor fitted with an efficient condenser, thermometer, mechanical stirrer and side-arm addition funnel was charged with 1552 g (5.0 mol) of triphenyl phosphite. The reactant was placed under a nitrogen blanket and heated to reflux. A solution of 5.0 g of methyl iodide in 160 g (5.1 mol) of methanol was then slowly added over a two hour period. Throughout the addition, the temperature of the reactor contents was maintained within the 200°-250° C. range. One further hour at 215° C. proved sufficient for the reaction to reach completion. Subsequently, an aspirator vacuum distillation removed 468 g (5.0 mol) of phenol containing a small amount of anisole. Thereafter, a high vacuum distillation recovered 1150 g (4.6 mol, 92% yield) of diphenyl methylphosphonate. Glc analysis using a 6 foot column packed with 10% OV-101 on chromosorb W, was employed to monitor the progress of both the reaction and distillation. The 31P signal for the product appeared at -24.0 ppm. Proton nmr signals were seen at τ8.36 (3 H, doublet, J=18 HZ, CH3P) and τ2.9-2.5 (10 H, multiplet, phenyl). A reactor fitted with an efficient condenser thermometer, mechanical stirrer and side-arm addition funnel heated to reflux Throughout the addition the temperature of the reactor contents was maintained within the 200°-250° C. range One further hour at 215° C. proved sufficient for the reaction Subsequently, an aspirator vacuum distillation Thereafter, a high vacuum distillation

反应条件: temp:0.00; pressure:0.00; stir:; See reaction.notes.procedure_details.

实验步骤: A reactor fitted with an efficient condenser, thermometer, mechanical stirrer and side-arm addition funnel was charged with 1552 g (5.0 mol) of triphenyl phosphite. The reactant was placed under a nitrogen blanket and heated to reflux. A solution of 5.0 g of methyl iodide in 160 g (5.1 mol) of methanol was then slowly added over a two hour period. Throughout the addition, the temperature of the reactor contents was maintained within the 200°-250° C. range. One further hour at 215° C. proved sufficient for the reaction to reach completion. Subsequently, an aspirator vacuum distillation removed 468 g (5.0 mol) of phenol containing a small amount of anisole. Thereafter, a high vacuum distillation recovered 1150 g (4.6 mol, 92% yield) of diphenyl methylphosphonate. Glc analysis using a 6 foot column packed with 10% OV-101 on chromosorb W, was employed to monitor the progress of both the reaction and distillation. The 31P signal for the product appeared at -24.0 ppm. Proton nmr signals were seen at τ8.36 (3 H, doublet, J=18 HZ, CH3P) and τ2.9-2.5 (10 H, multiplet, phenyl). A reactor fitted with an efficient condenser thermometer, mechanical stirrer and side-arm addition funnel heated to reflux Throughout the addition the temperature of the reactor contents was maintained within the 200°-250° C. range One further hour at 215° C. proved sufficient for the reaction Subsequently, an aspirator vacuum distillation Thereafter, a high vacuum distillation

反应条件: temp:210.01; pressure:0.00; stir:; See reaction.notes.procedure_details.

实验步骤: To a three-necked flask equipped with thermometer, magnetic stirrer, distillation head and nitrogen inlet 163 g (0.52 mol) of triphenyl phosphite and 1.0 mL of methyl iodide were charged. Then, 32.7 g (0.26 mol) of trimethyl phosphite was added drop-wise at 100–110° C. over the course of one hour. The reaction temperature was then raised to 210° C. and an exothermic reaction was observed. The reaction temperature was maintained at 230° C. for two hours, and the reaction mixture was analyzed before it underwent transesterification. Diphenyl methylphosphonate was obtained as a liquid. The 31P NMR (CDCl3) indicated 95% diphenyl methylphosphonate. The impurities included triphenyl phosphate (0.8%, δ=−16.4 ppm), trimethyl phosphate (0.6%, δ=−10.3 ppm), and unknown compounds (δ=19.8, 20.4. 28.4 ppm). The acid number of this crude diphenyl methylphosphonate was 5.4 mg KOH/g were charged an exothermic reaction The reaction temperature was maintained at 230° C. for two hours

反应条件: temp:210.01; pressure:0.00; stir:; See reaction.notes.procedure_details.

实验步骤: To a three-necked flask equipped with thermometer, magnetic stirrer, distillation head and nitrogen inlet 163 g (0.52 mol) of triphenyl phosphite and 1.0 mL of methyl iodide were charged. Then, 32.7 g (0.26 mol) of trimethyl phosphite was added drop-wise at 100–110° C. over the course of one hour. The reaction temperature was then raised to 210° C. and an exothermic reaction was observed. The reaction temperature was maintained at 230° C. for two hours, and the reaction mixture was analyzed before it underwent transesterification. Diphenyl methylphosphonate was obtained as a liquid. The 31P NMR (CDCl3) indicated 95% diphenyl methylphosphonate. The impurities included triphenyl phosphate (0.8%, δ=−16.4 ppm), trimethyl phosphate (0.6%, δ=−10.3 ppm), and unknown compounds (δ=19.8, 20.4. 28.4 ppm). The acid number of this crude diphenyl methylphosphonate was 5.4 mg KOH/g were charged an exothermic reaction The reaction temperature was maintained at 230° C. for two hours

反应条件: temp:0.00; pressure:0.00; stir:; See reaction.notes.procedure_details.

实验步骤: A reactor fitted with an efficient condenser, thermometer, mechanical stirrer and side-arm addition funnel was charged with 1552 g (5.0 mol) of triphenyl phosphite. The reactant was placed under a nitrogen blanket and heated to reflux. A solution of 5.0 g of methyl iodide in 160 g (5.1 mol) of methanol was then slowly added over a two hour period. Throughout the addition, the temperature of the reactor contents was maintained within the 200°-250° C. range. One further hour at 215° C. proved sufficient for the reaction to reach completion. Subsequently, an aspirator vacuum distillation removed 468 g (5.0 mol) of phenol containing a small amount of anisole. Thereafter, a high vacuum distillation recovered 1150 g (4.6 mol, 92% yield) of diphenyl methylphosphonate. Glc analysis using a 6 foot column packed with 10% OV-101 on chromosorb W, was employed to monitor the progress of both the reaction and distillation. The 31P signal for the product appeared at -24.0 ppm. Proton nmr signals were seen at τ8.36 (3 H, doublet, J=18 HZ, CH3P) and τ2.9-2.5 (10 H, multiplet, phenyl). A reactor fitted with an efficient condenser thermometer, mechanical stirrer and side-arm addition funnel heated to reflux Throughout the addition the temperature of the reactor contents was maintained within the 200°-250° C. range One further hour at 215° C. proved sufficient for the reaction Subsequently, an aspirator vacuum distillation Thereafter, a high vacuum distillation

反应条件: temp:0.00; pressure:0.00; stir:; See reaction.notes.procedure_details.

实验步骤: A reactor fitted with an efficient condenser, thermometer, mechanical stirrer and side-arm addition funnel was charged with 1552 g (5.0 mol) of triphenyl phosphite. The reactant was placed under a nitrogen blanket and heated to reflux. A solution of 5.0 g of methyl iodide in 160 g (5.1 mol) of methanol was then slowly added over a two hour period. Throughout the addition, the temperature of the reactor contents was maintained within the 200°-250° C. range. One further hour at 215° C. proved sufficient for the reaction to reach completion. Subsequently, an aspirator vacuum distillation removed 468 g (5.0 mol) of phenol containing a small amount of anisole. Thereafter, a high vacuum distillation recovered 1150 g (4.6 mol, 92% yield) of diphenyl methylphosphonate. Glc analysis using a 6 foot column packed with 10% OV-101 on chromosorb W, was employed to monitor the progress of both the reaction and distillation. The 31P signal for the product appeared at -24.0 ppm. Proton nmr signals were seen at τ8.36 (3 H, doublet, J=18 HZ, CH3P) and τ2.9-2.5 (10 H, multiplet, phenyl). A reactor fitted with an efficient condenser thermometer, mechanical stirrer and side-arm addition funnel heated to reflux Throughout the addition the temperature of the reactor contents was maintained within the 200°-250° C. range One further hour at 215° C. proved sufficient for the reaction Subsequently, an aspirator vacuum distillation Thereafter, a high vacuum distillation

反应条件: temp:0.00; pressure:0.00; stir:; See reaction.notes.procedure_details.

实验步骤: A reactor fitted with an efficient condenser, thermometer, mechanical stirrer and side-arm addition funnel was charged with 1552 g (5.0 mol) of triphenyl phosphite. The reactant was placed under a nitrogen blanket and heated to reflux. A solution of 5.0 g of methyl iodide in 160 g (5.1 mol) of methanol was then slowly added over a two hour period. Throughout the addition, the temperature of the reactor contents was maintained within the 200°-250° C. range. One further hour at 215° C. proved sufficient for the reaction to reach completion. Subsequently, an aspirator vacuum distillation removed 468 g (5.0 mol) of phenol containing a small amount of anisole. Thereafter, a high vacuum distillation recovered 1150 g (4.6 mol, 92% yield) of diphenyl methylphosphonate. Glc analysis using a 6 foot column packed with 10% OV-101 on chromosorb W, was employed to monitor the progress of both the reaction and distillation. The 31P signal for the product appeared at -24.0 ppm. Proton nmr signals were seen at τ 8.36 (3H, doublet, J=18 HZ, CH3P) and τ 2.9-2.5 (10H, multiplet, phenyl). A reactor fitted with an efficient condenser thermometer, mechanical stirrer and side-arm addition funnel heated to reflux Throughout the addition the temperature of the reactor contents was maintained within the 200°-250° C. range One further hour at 215° C. proved sufficient for the reaction Subsequently, an aspirator vacuum distillation Thereafter, a high vacuum distillation

反应条件: temp:0.00; pressure:0.00; stir:; See reaction.notes.procedure_details.

实验步骤: A reactor fitted with an efficient condenser, thermometer, mechanical stirrer and side-arm addition funnel was charged with 1552 g (5.0 mol) of triphenyl phosphite. The reactant was placed under a nitrogen blanket and heated to reflux. A solution of 5.0 g of methyl iodide in 160 g (5.1 mol) of methanol was then slowly added over a two hour period. Throughout the addition, the temperature of the reactor contents was maintained within the 200°-250° C. range. One further hour at 215° C. proved sufficient for the reaction to reach completion. Subsequently, an aspirator vacuum distillation removed 468 g (5.0 mol) of phenol containing a small amount of anisole. Thereafter, a high vacuum distillation recovered 1150 g (4.6 mol, 92% yield) of diphenyl methylphosphonate. Glc analysis using a 6 foot column packed with 10% OV-101 on chromosorb W, was employed to monitor the progress of both the reaction and distillation. The 31P signal for the product appeared at -24.0 ppm. Proton nmr signals were seen at τ8.36 (3 H, doublet, J=18 HZ, CH3P) and τ2.9-2.5 (10 H, multiplet, phenyl). A reactor fitted with an efficient condenser thermometer, mechanical stirrer and side-arm addition funnel heated to reflux Throughout the addition the temperature of the reactor contents was maintained within the 200°-250° C. range One further hour at 215° C. proved sufficient for the reaction Subsequently, an aspirator vacuum distillation Thereafter, a high vacuum distillation

反应条件: temp:210.01; pressure:0.00; stir:; See reaction.notes.procedure_details.

实验步骤: To a three-necked flask equipped with thermometer, magnetic stirrer, distillation head and nitrogen inlet 163 g (0.52 mol) of triphenyl phosphite and 1.0 mL of methyl iodide were charged. Then, 32.7 g (0.26 mol) of trimethyl phosphite was added drop-wise at 100–110° C. over the course of one hour. The reaction temperature was then raised to 210° C. and an exothermic reaction was observed. The reaction temperature was maintained at 230° C. for two hours, and the reaction mixture was analyzed before it underwent transesterification. Diphenyl methylphosphonate was obtained as a liquid. The 31P NMR (CDCl3) indicated 95% diphenyl methylphosphonate. The impurities included triphenyl phosphate (0.8%, δ=−16.4 ppm), trimethyl phosphate (0.6%, δ=−10.3 ppm), and unknown compounds (δ=19.8, 20.4. 28.4 ppm). The acid number of this crude diphenyl methylphosphonate was 5.4 mg KOH/g were charged an exothermic reaction The reaction temperature was maintained at 230° C. for two hours

反应条件: temp:0.00; pressure:0.00; stir:; See reaction.notes.procedure_details.

实验步骤: A reactor fitted with an efficient condenser, thermometer, mechanical stirrer and side-arm addition funnel was charged with 1552 g (5.0 mol) of triphenyl phosphite. The reactant was placed under a nitrogen blanket and heated to reflux. A solution of 5.0 g of methyl iodide in 160 g (5.1 mol) of methanol was then slowly added over a two hour period. Throughout the addition, the temperature of the reactor contents was maintained within the 200°-250° C. range. One further hour at 215° C. proved sufficient for the reaction to reach completion. Subsequently, an aspirator vacuum distillation removed 468 g (5.0 mol) of phenol containing a small amount of anisole. Thereafter, a high vacuum distillation recovered 1150 g (4.6 mol, 92% yield) of diphenyl methylphosphonate. Glc analysis using a 6 foot column packed with 10% OV-101 on chromosorb W, was employed to monitor the progress of both the reaction and distillation. The 31P signal for the product appeared at -24.0 ppm. Proton nmr signals were seen at τ8.36 (3 H, doublet, J=18 HZ, CH3P) and τ2.9-2.5 (10 H, multiplet, phenyl). A reactor fitted with an efficient condenser thermometer, mechanical stirrer and side-arm addition funnel heated to reflux Throughout the addition the temperature of the reactor contents was maintained within the 200°-250° C. range One further hour at 215° C. proved sufficient for the reaction Subsequently, an aspirator vacuum distillation Thereafter, a high vacuum distillation

反应条件: temp:0.00; pressure:0.00; stir:; See reaction.notes.procedure_details.

实验步骤: A reactor fitted with an efficient condenser, thermometer, mechanical stirrer and side-arm addition funnel was charged with 1552 g (5.0 mol) of triphenyl phosphite. The reactant was placed under a nitrogen blanket and heated to reflux. A solution of 5.0 g of methyl iodide in 160 g (5.1 mol) of methanol was then slowly added over a two hour period. Throughout the addition, the temperature of the reactor contents was maintained within the 200°-250° C. range. One further hour at 215° C. proved sufficient for the reaction to reach completion. Subsequently, an aspirator vacuum distillation removed 468 g (5.0 mol) of phenol containing a small amount of anisole. Thereafter, a high vacuum distillation recovered 1150 g (4.6 mol, 92% yield) of diphenyl methylphosphonate. Glc analysis using a 6 foot column packed with 10% OV-101 on chromosorb W, was employed to monitor the progress of both the reaction and distillation. The 31P signal for the product appeared at -24.0 ppm. Proton nmr signals were seen at τ 8.36 (3H, doublet, J=18 HZ, CH3P) and τ 2.9-2.5 (10H, multiplet, phenyl). A reactor fitted with an efficient condenser thermometer, mechanical stirrer and side-arm addition funnel heated to reflux Throughout the addition the temperature of the reactor contents was maintained within the 200°-250° C. range One further hour at 215° C. proved sufficient for the reaction Subsequently, an aspirator vacuum distillation Thereafter, a high vacuum distillation

反应条件: temp:0.00; pressure:0.00; stir:; See reaction.notes.procedure_details.

实验步骤: A reactor fitted with an efficient condenser, thermometer, mechanical stirrer and side-arm addition funnel was charged with 1552 g (5.0 mol) of triphenyl phosphite. The reactant was placed under a nitrogen blanket and heated to reflux. A solution of 5.0 g of methyl iodide in 160 g (5.1 mol) of methanol was then slowly added over a two hour period. Throughout the addition, the temperature of the reactor contents was maintained within the 200°-250° C. range. One further hour at 215° C. proved sufficient for the reaction to reach completion. Subsequently, an aspirator vacuum distillation removed 468 g (5.0 mol) of phenol containing a small amount of anisole. Thereafter, a high vacuum distillation recovered 1150 g (4.6 mol, 92% yield) of diphenyl methylphosphonate. Glc analysis using a 6 foot column packed with 10% OV-101 on chromosorb W, was employed to monitor the progress of both the reaction and distillation. The 3:P signal for the product appeared at -24.0 ppm. Proton nmr signals were seen at τ 8.36 (3 H, doublet, J=18 HZ, CH3P) and τ 2.9-2.5 (10 H, multiplet, phenyl). A reactor fitted with an efficient condenser thermometer, mechanical stirrer and side-arm addition funnel heated to reflux Throughout the addition the temperature of the reactor contents was maintained within the 200°-250° C. range One further hour at 215° C. proved sufficient for the reaction Subsequently, an aspirator vacuum distillation Thereafter, a high vacuum distillation