三甲基膦酰甲酸盐

反应条件: temp:0.00; pressure:0.00; stir:

反应条件: temp:0.00; pressure:0.00; stir:

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

实验步骤: One hundred and thirty parts of trimethyl phosphite are heated to 125° C. and treated with 100 parts of methyl chloroformate at a rate sufficient to maintain a reaction temperature of at least 100° C. After gas evolution stops, the residue is distilled to obtain 131 parts of dimethyl methoxycarbonylphosphonate, b.p. 83°-85° C./1.2 mm., nD25 = 1.4210. to maintain a reaction temperature of at least 100° C the residue is distilled

反应条件: temp:0.00; pressure:0.00; stir:

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

实验步骤: One hundred and thirty parts of trimethyl phosphite are heated to 125° C. and treated with 100 parts of methyl chloroformate at a rate sufficient to maintain a reaction temperature of at least 100° C. After gas evolution stops, the residue is distilled to obtain 131 parts of dimethyl methoxycarbonylphosphonate, b.p. 83°-85° C./1.2 mm., nD25 = 1.4210. to maintain a reaction temperature of at least 100° C the residue is distilled

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

实验步骤: One hundred and thirty parts of trimethyl phosphite are heated to 125° C. and treated with 100 parts of methyl chloroformate at a rate sufficient to maintain a reaction temperature of at least 100° C. After gas evolution stops, the residue is distilled to obtain 131 parts of dimethyl methoxycarbonylphosphonate, b.p. 83°-85° C./1.2 mm., nD25 = 1.4210. to maintain a reaction temperature of at least 100° C the residue is distilled

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

实验步骤: a mixture of 23 parts of 0-methylisourea and 54 parts of dimethyl methoxycarbonylphosphonate in 1000 parts of anhydrous tetrahydrofuran was refluxed for one hour. The solvent was removed to give dimethyl 1-amino-1-methoxy-methyleneaminocarbonylphosphonate, nD27 = 1.4774. was refluxed for one hour The solvent was removed

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

实验步骤: A solution of 54 parts of dimethyl methoxycarbonylphosphonate and 33 parts of 1,1,3-trimethylguanidine in 1000 parts of anhydrous tetrahydrofuran was refluxed for one hour. The solvent was removed under reduced pressure to yield 71 parts of dimethyl 1-dimethylamino-1-methylaminomethyleneaminocarbonylphosphonate, nD25 = 1.4989. The solvent was removed under reduced pressure

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

实验步骤: A solution of 54 parts of dimethyl methoxycarbonylphosphonate and 38 parts of 1,1,3,3-tetramethylguanidine in 1000 parts of anhydrous tetrahydrofuran was refluxed for one hour. The solvent was removed under reduced pressure to yield 77 parts of dimethyl 1,1-bis(dimethylamino)-methyleneaminocarbonylphosphonate, nD27 = 1.4855. The solvent was removed under reduced pressure

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

实验步骤: One hundred and thirty parts of trimethyl phosphite are heated to 125° C. and treated with 100 parts of methyl chloroformate at a rate sufficient to maintain a reaction temperature of at least 100° C. After gas evolution stops, the residue is distilled to obtain 131 parts of dimethyl methoxycarbonylphosphonate, b.p. 83°-85° C./1.2 mm., nD25 = 1.4210. to maintain a reaction temperature of at least 100° C the residue is distilled