ChemicalBook CAS DataBase List VALERIC ANHYDRIDE

VALERIC ANHYDRIDE synthesis

8synthesis methods

Product Name:VALERIC ANHYDRIDE
CAS Number:2082-59-9
Molecular formula:C10H18O3
Molecular Weight:186.25

109-52-4
334 suppliers
$10.60/1gm:

2082-59-9
176 suppliers
$11.00/25g

Yield:2082-59-9 91%

Reaction Conditions:

with dicyclohexyl-carbodiimide in dichloromethane at 20; for 0.583333 h;Time;

Steps:

2 Example 2: The preparation method of pentanoic anhydride comprises the following steps:
in the 1000 ml flask of the three-port adding 255g dichloromethane and 102g valeric acid, then added in batches 226.6g dicyclohexyl carbodiimide, room temperature reaction 35 minutes; and then through the filter to remove solid impurities in the reaction solution, methylene chloride is recycled by distillation under reduced pressure, after to be dichloromethane recovery, vacuum distillation to obtain the target product temperature 93g valeric anhydride, valeric anhydride the yield of 91%, purity of 99.3%.

References:

Chongqing Tian Yi Heng Chemical Co., Ltd.;Zheng, Wei;Tang, Yong CN105481680, 2016, A Location in patent:Paragraph 0019; 0020

FullText

109-52-4
334 suppliers
$10.60/1gm:

2082-59-9
176 suppliers
$11.00/25g