Journal of the Chemical Society. Perkin transactions II p. 976 - 980 (1980)
Update date:2022-08-04
Topics:
Klaebe, Alain
Sanchez, Michel
Caruana, Genevieve
Wolf, Robert
Two diasteroisomeric pairs of optically active spirophosphoranes have been synthesized, which differ only in the nature of the monodentate phosphorus substituent: H for (1) and PhNH for (2).A kinetics study of the isomerization (epimerization) of each of these pairs has been carried out by polarimetry.The difference in apicophilicity of the exocyclic ligand fails to explain the small difference between the barriers observed for (1) and (2).An accurate determination of the activation parameters shows that in these cases the variation in the isomerization barrier is essentially due to entropy factors.
View MoreYixing Bluwat Chemicals Co., Ltd.
Contact:+86 510 87821568
Address:Yongan Road, Yixing Chemical Industrial Park, Yixing, Jiangsu, China
Shanghai Coupling Pharmaceutical R&D Co., Ltd.(expird)
Contact:+86 021 50106671
Address:403 Room No.4 Buiding, No. 526 Ruiqing Road, Shanghai Zhangjiang Hi-Tech Park
Contact:0086-357-6662688
Address:Zhaocheng town, Hongtong County, Linfen City, Shanxi Province
Zouping Mingxing Chemical Co.,Ltd.
website:http://www.zoutong.com.cn
Contact:86-543-2240068 2240067
Address:428 Daixi Third Road Zouping County Shandong Province China
Shanghai PuYi Chem-Tech Co.,Ltd.
Contact:+86-21-57687505-227
Address:3 Floor, Building 11, No 201 MinYi Road, Songjiang District, Shanghai 201612, China
Doi:10.1016/j.cplett.2010.09.039
(2010)Doi:10.1021/jm049802l
(2004)Doi:10.1021/bi00855a002
(1967)Doi:10.1016/S0040-4020(01)93692-0
(1980)Doi:10.1016/S0040-4039(00)92609-1
(1980)Doi:10.1002/ardp.19803130706
(1980)
