Oxidation of benzylic methylenes to ketones with Oxone-KBr in aqueous acetonitrile under transition metal free conditions
A green and highly efficient protocol for the oxidation of benzylic methylenes to their corresponding ketones with a combination of Oxone and KBr in aqueous acetonitrile is developed. The H218O labeling experiment demonstrated that the oxygen introduced into ketone originated from water. A plausible mechanism was also suggested.
Yin, Lixia,Wu, Jingjing,Xiao, Juan,Cao, Song
supporting information; experimental part
p. 4418 - 4421
(2012/09/25)
SUBSTITUTED IMIDAZOLONE DERIVATIVES, PREPARATIONS AND USES
The present invention relates to polysubstituted imidazolone derivatives, to the pharmaceutical compositions comprising them and to the therapeutic uses thereof in the human and animal health fields. The present invention also relates to a process for preparing these derivatives.
-
Page/Page column 59-60
(2010/02/16)
Electronic effects of ring substituents on triplet benzylic biradicals
UV irradiation of α-(o-alkylphenyl)acetophenones with a methoxy or cyano substituent para to the o-alkyl group of the α-aryl ring has revealed that a methoxy group slightly increases the stereoselectivity but not the quantum yield of indanol formation, whereas a cyano group greatly lowers both diastereoselectivity and quantum efficiency, confirming the likelihood that hydrogen-bonding of the hydroxy group to the α-phenyl ring plays an important role in the cyclization of the photogenerated triplet 1,5-biradical intermediates.
Wagner, Peter J.,Wang, Lingling
p. 645 - 647
(2007/10/03)
More Articles about upstream products of 852946-96-4