Synthesis of 3-phosphorylated 2-aza-1,3-dienes from imines derived from bisphosphonates
作者:Francisco Palacios、Marie J. Gil、Eduardo Martínez de Marigorta、Marta Rodríguez
DOI:10.1016/s0040-4039(99)00116-1
日期:1999.3
A synthesis of 2 aza-1,3-butadienes 3 substituted with a phosphonate group in the 3-position is described. The key step is the olefination reaction of bisphosphonylalkyl imino compounds 2, with aldehydes in the presence of base. Heterocyclisation of 2-azatrienes 5 afforded substituted 2-phosphorylated pyridines 6. (C) 1999 Elsevier Science Ltd. All rights reserved.