Journal of the Chemical Society. Perkin transactions II p. 1233 - 1238 (1984)
Update date:2022-08-04
Topics:
Sabbagh, Mohamed Mowafak Al
Calmon, Michelle
Calmon, Jean-Pierre
The kinetics of hydrolysis of aryl and alkyl 4-phenylallophanates to phenyl urea and phenol or alcohol are studied.Acid-base catalysis, deuterium solvent isotope effects, and entropy of activation provide good evidence for a changeover in mechanism from E1cB for aryl allophanates to BAc2 for alkyl esters.The parameters of Hammett and Yukawa-Tsuno relationships for aryl esters and the non-linear Bronsted correlation with the pKa values of the leaving groups are in good agreement with the proposed mechanism.
View MoreXi'an caijing Opto-Electrical Science & Technology Co., LTD
Contact:+86-29-88294447
Address:NO.168 Zhangba Rd. East, Xi'an, P.R.China
Dongguan Albiya Energy Science and Technology Co.,Ltd
Contact:+86-769-22181286
Address:Huanan Industial Park, Dongguan,China
Anyang Double Circle Auxiliary CO.,LTD
Contact:0086-134 6082 4403
Address:dongfeng road, anyang city, henan province,china
JiangXi Keyuan Biopharma Co., LTD.
Contact:+86-563-6833666
Address:Guangde Fine Chemical Zone, Anhui Province, China
website:http://www.alwaychem.com
Contact:+86-532-8586-4000, 8586-5000
Address:NO.51, TAIPING ROAD, QINGDAO, CHINA. 266001
Doi:10.1016/S0040-4039(02)02103-2
(2002)Doi:10.1016/j.bmcl.2008.11.116
(2009)Doi:10.1016/j.cplett.2015.04.028
(2015)Doi:10.1021/ic025573m
(2002)Doi:10.1039/j39670000302
(1967)Doi:10.1016/j.bmcl.2010.04.094
(2010)
