Mannich reaction of carbonyl compounds via boron enolates and N,N,N′,N′-tetramethyldiaminomethane
作者:Ernest G. Nolen、Andrea Allocco、Jim Vitarius、Karen McSorley
DOI:10.1039/c39900001532
日期:——
A variety of carbonylcompounds undergo N,N-dimethylaminomethylation in moderate to good yields by the Mannichreaction involving boronenolates and N,N,N′,N′-tetramethyldiaminomethane in dichloromethane.
Addition of boron enolates to isoquinolinium salts: A facile synthesis of 1-β-keto substituted 2-ethoxycarbonyl-1,2-dihydroisoquinolines and their cyclization
An efficientmethod to synthesize 1-β-keto substituted 2-ethoxycarbonyl (or 2-acetyl)-1,2-dihydroisoquinolines (3) is described, utilizing boron enolates and isoquinolinium salts. The products were treated with sodium ethoxide to afford the corresponding cyclic compounds (6).