Gallium enolate-mediated intermolecular aldol reaction and addition reaction of α-bromoketone with imine
摘要:
Treatment of alpha-bromoketone with gallium triiodide or methyl galliumiodide prepared in situ provides gallium enolates which react with carbonyl compounds or imines to give beta - hydroxy ketones or beta -phenylamino ketones effectively in moderate yields (C) 1998 Elsevier Science Ltd. All rights reserved.
A new synthetic route to trimethylgallium was developed. It is based on preparation of gallium methyl derivatives by the Green reaction, followed by their alkylation with methyl Grignard reagent. The suggested procedure is well reproducible, with the yield of pure trimethylgallium exceeding 90%.