Claisen Condensation of<i>N</i>‐Methylpyrrolidinone and α‐Chloronicotinic esters
作者:Thomas Kaminski、Gilbert Kirsch
DOI:10.1002/jhet.5570450128
日期:2008.1
Reaction between α-halo-nicotinic esters and a nucleophilic source such as the N-methylpyrrolidin-2-one (NMP) gave unexpected results. The presence of the halide on the pyridine gave a very interesting migration reaction. Extension to 6-methylnicotinic ester derivatives lead to an unexpected carbanion condensation.
Simple Reduction of Heteroaromatic Esters to Alcohols Using a Sodium Borohydride–Methanol System
作者:Núbia Boechat、Jorge Carlos Santos da Costa、Jorge de Souza Mendonça、Karla Ceodaro Paes、Elisa Lopes Fernandes、Pedro Santos Mello de Oliveira、Thatyana Rocha Alves Vasconcelos、Marcus Vinícius Nora de Souza
DOI:10.1080/00397910500214482
日期:2005.12.1
Abstract Some heteroaromatic esters were reduced to the corresponding alcohols by using a sodium borohydride–methanol system. The reduction was completed within 0.15–2.0 h in refluxing THF. The alcohol products were isolated after aqueous workup in moderate to excellent yield (48–97%).