One-pot synthesis of heterocyclic compounds initiated by chemoselective addition to β-acyl substituted unsaturated aldehydes with nucleophilic tin complexes
作者:Ikuya Shibata、Hirofumi Kato、Makoto Yasuda、Akio Baba
DOI:10.1016/j.jorganchem.2006.03.043
日期:2007.1
β-Acyl substituted unsaturated aldehydes 1 were revealed to be good precursors for the synthesis of various heterocycliccompounds by the combination with tin nucleophiles. Various 2-monosubstituted pyrroles were prepared in an one-pot procedure via the reductive amination of formyl groups of 1 by using Bu2SnIH–HMPA complex. One-pot synthesis of heterocycles was carried out initiated by chemoselective
Synthesis of 2-Monosubstituted Pyrroles by Intramolecular Addition of Amines via Reductive Amination with Dibutyliodotin Hydride Complex (Bu<sub>2</sub>SnIH-HMPA)
Various 2-monosubstituted pyrroles were prepared in a one-pot procedure via the reductive amination of formyl groups of multifunctional substrates 1 by using Bu 2 SnIH-HMPA system.
NBS oxidation of 2-substituted furans 9 and 15 followed by further oxidation of the enals with NaClO2 afforded the acids II and 17 in good yields, which are the intermediates of(+)-patulolide A and (-)-pyrenophorin, respectively. Copyright (C) 1996 Elsevier Science Ltd