An Efficient Protocol for the Oxidative Hydrolysis of Ketone SAMP Hydrazones Employing SeO2 and H2O2 under Buffered (pH 7) Conditions
摘要:
An effective oxidative protocol for the liberation of ketones from SAMP hydrazones employing peroxyselenous acid under aqueous buffered conditions (pH 7) has been developed. The procedure proceeds without epimerization of adjacent stereocenters or dehydration, in representative SAMP alkylation and aldol reaction adducts, respectively.
Azidodiols, bromodiols and triol derivatives were regioselectively monooxidised to the corresponding ketols using dimethyldioxirane. This regioselectivity is essentially determined by dipolar functionalities close to the potential reactive carbinol. These results make the reactivity of polyols with dimethyldioxirane highly predictable. (C) 1998 Published by Elsevier Science Ltd. All rights reserved.
An Efficient Protocol for the Oxidative Hydrolysis of Ketone SAMP Hydrazones Employing SeO2 and H2O2 under Buffered (pH 7) Conditions
作者:Amos Smith、Zhuqing Liu、Vladimir Simov
DOI:10.1055/s-0029-1218352
日期:2009.12
An effective oxidative protocol for the liberation of ketones from SAMP hydrazones employing peroxyselenous acid under aqueous buffered conditions (pH 7) has been developed. The procedure proceeds without epimerization of adjacent stereocenters or dehydration, in representative SAMP alkylation and aldol reaction adducts, respectively.
Habermehl, Gerhard G.; Wippermann, Irene, Zeitschrift fur Naturforschung, B: Chemical Sciences, 1991, vol. 46, # 10, p. 1421 - 1424