Ceric(IV) ammonium nitrate in the selective conversion of hydrazides to esters
摘要:
Hydrazides were treated with ceric(IV) ammonium nitrate (CAN) in the presence of the appropriate alcohol as a nucleophile to afford esters in good yields. Reactions took place exclusively at the hydrazino moiety even when other sensitive groups were present in either of the partners. (C) 1999 Elsevier Science Ltd, All rights reserved.
Allenes and Transition Metals: A Diverging Approach to Heterocycles
作者:Kay M. Brummond、Branko Mitasev
DOI:10.1021/ol0492391
日期:2004.6.1
[GRAPHICS]An alkynyl allene has been converted to heterocycles possessing an alpha-alkylidene cyclopentenone, a 4-alkylidene cyclopentenone, or a cross-conjugated triene. Thus, a common intermediate has been converted to three structurally unique compounds by changing only the reaction conditions and, therefore, controlling various reaction pathways.