丙基 4-羟基苯甲酸甲酯

反应条件: temp:70.01; pressure:0.00; stir:; See reaction.notes.procedure_details.

实验步骤: Part II: 5.739 g of sodium 4-phenylbutyrate (Triple Crown America, Inc.), 0.125 g of methylparaben (Merck), 0.075 g of propylparaben (Merck), 83.5 g of 1,2-propandiol, and 20 g of 10% NaOH were mixed in a beaker and heated at 70° C.

反应条件: temp:70.01; pressure:0.00; stir:; See reaction.notes.procedure_details.

实验步骤: Part II: 5.739 g of sodium 4-phenylbutyrate (Triple Crown America, Inc.), 0.125 g of methylparaben (Merck), 0.075 g of propylparaben (Merck), 232.035 g of deionized water, and 20 g of 10% NaOH were mixed in a beaker and heated at 70° C.

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

实验步骤: The NMP and a portion of the polyethylene glycol 200 are charged to the compounding vessel. Florfenicol, methyl p-hydroxybenzoate and propyl p-hydroxybenzoate are added to the vessel and mixed until dissolved. Water is added, followed by the flunixin meglumine, and mixed until solids are dissolved. Q.S. to final volume with polyethylene glycol 200 if needed. mixed until dissolved mixed until solids are dissolved

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

实验步骤: A similar procedure to Example 1 is carried out by using 18 g of propyl p-hydroxybenzoate and 8.5 g of glutaric acid dichloride to yield di(p-propyloxycarbonylphenyl)glutarate, m.p. 74°-75° C., as white crystals.

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

实验步骤: A similar procedure to Example 1 is carried out by using 7.8 g of propyl p-hydroxybenzoate and 18 g of succinic acid dichloride to yield di(p-propyloxycarbonylphenyl)succinate, m.p 122°-123.5° C., as white crystals.

反应条件: temp:70.01; pressure:0.00; stir:; See reaction.notes.procedure_details.

实验步骤: Part II: 5.739 g of sodium 4-phenylbutyrate (Triple Crown America, Inc.), 0.125 g of methylparaben (Merck), 0.075 g of propylparaben (Merck), 232.035 g of deionized water, and 20 g of 10% NaOH were mixed in a beaker and heated at 70° C.

反应条件: temp:70.01; pressure:0.00; stir:; See reaction.notes.procedure_details.

实验步骤: Part II: 5.739 g of sodium 4-phenylbutyrate (Triple Crown America, Inc.), 0.125 g of methylparaben (Merck), 0.075 g of propylparaben (Merck), 83.5 g of 1,2-propandiol, and 20 g of 10% NaOH were mixed in a beaker and heated at 70° C.

反应条件: temp:70.01; pressure:0.00; stir:; See reaction.notes.procedure_details.

实验步骤: Part II: 5.739 g of sodium 4-phenylbutyrate (Triple Crown America, Inc.), 0.125 g of methylparaben (Merck), 0.075 g of propylparaben (Merck), 83.5 g of 1,2-propandiol, and 20 g of 10% NaOH were mixed in a beaker and heated at 70° C.

反应条件: temp:70.01; pressure:0.00; stir:; See reaction.notes.procedure_details.

实验步骤: Part II: 5.739 g of sodium 4-phenylbutyrate (Triple Crown America, Inc.), 0.125 g of methylparaben (Merck), 0.075 g of propylparaben (Merck), 232.035 g of deionized water, and 20 g of 10% NaOH were mixed in a beaker and heated at 70° C.

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

实验步骤: Ethyl para-hydroxybenzoate (E 214) and propyl para-hydroxybenzoate (E 216) and their sodium compounds (E 2 15 and E 2 17) up to 5 grams per kilogram of product calculated as benzoic acid on a dry weight basis

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

实验步骤: Ethyl para-hydroxybenzoate (E 214) and propyl para-hydroxybenzoate (E 216) and their sodium compounds (E 2 15 and E 2 17) up to 5 grams per kilogram of product calculated as benzoic acid on a dry weight basis

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

实验步骤: Propyl p-hydroxybenzoate and terephthalic dichloride are allowed to react in a similar procedure to Example 5. The reaction product is recrystallized from hexane-chloroform (1:1) to yield di(p-propoxycarbonylphenyl)terephthalate, m.p. 136°-139° C., as white crystals. to react in a similar procedure to Example 5 The reaction product is recrystallized from hexane-chloroform (1:1)