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 MoreJIANGSU GRAND XINYI PHARMACEUTICAL CO.,LTD
website:http://www.xypharm.com/
Contact:+86-515-84383317
Address:Chenli Road,Costal Chemical Area Binhai,Yancheng, Jiangsu,China
Jingzhou TianHe Sci&Tech Chemical Co., Ltd.
Contact:86-716-8331612
Address:Jiangjin Road, #18, High-grade technology industries development district, Jingzhou city, Hubei province
Beijing Green Guardee Technology CO,.LTD
Contact:+86-10-69706062
Address:F2 BLdj,5 No.37 Chaoqian Road
KangZhiYuan Pharmaceutical Company Limited
Contact:(Sabrina)86-20-85273232
Address:4th floor, building B, Dadi industry zone, Tangxia, Tianhe, Guangzhou, China
Suzhou Wedo Chemicals Co., Ltd.
Contact:86 512 58100425
Address:Zonger Road, DongSha Industry Park , Zhangjiagang, Jiangsu, China
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)
