A mild and efficient method for the direct conversion of aromatic, benzylic and aliphatic esters to amidines in the form of their hydrochlorides-has been developed. (C) 2002 Elsevier Science Ltd. All rights reserved.
A mild and efficient method for the direct conversion of aromatic, benzylic and aliphatic esters to amidines in the form of their hydrochlorides-has been developed. (C) 2002 Elsevier Science Ltd. All rights reserved.
Photorelease of phosphates: Mild methods for protecting phosphate derivatives
作者:Sanjeewa N Senadheera、Abraham L Yousef、Richard S Givens
DOI:10.3762/bjoc.10.212
日期:——
reaction in aq MeOH is considered to be a Favorskiirearrangement of the naphthyl ketone motif of 14a,b to naphthylacetate esters 25 and 26. Disruption of the ketone-naphthyl ring conjugation significantly shifts the photoproduct absorption away from the effective incident wavelength for decaging of 14, driving the reaction to completion. The Favorskiirearrangement does not occur in aqueous acetonitrile