Studying the reactivity of (phthalazin-1(2H)-on-2-yl)methyl trichloroacetimidate towards different C- and O-nucleophiles
摘要:
A simple and efficient synthesis of phthalazin-1(2H)-one 2-substituted derivatives is achieved in very good yields via reaction of a phthalazinone-trichloroacetimidate with various C- and O-nucleophiles such as aromatic, heteroaromatic and olefinic reagents, sugars and cholesterol in CH2Cl2 in the presence of a catalytic amount of trimethylsilyl trifluoromethanesulfonate (TMSOTf). (C) 2009 Elsevier Ltd. All rights reserved.
Convenient method for the synthesis of phthalazinones via carbonylation of 2-bromobenzaldehyde using Co2(CO)8 as a CO source
作者:A. Sivalingam Suresh、Poongavanam Baburajan、Mansur Ahmed
DOI:10.1016/j.tetlet.2014.04.082
日期:2014.6
A simple one-pot synthesis of phthalazinones by the condensation and intra-molecular carbonylative cyclization of 2-bromobenzaldehydes with hydrazines is reported. This method utilizes solid Co2(CO)8 as carbonyl source making it readily accessible in small-scale laboratory applications.