Synthesis of 3-phosphorylated 2-aza-1,3-dienes from imines derived from bisphosphonates
摘要:
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.
Synthesis and Reactivity of Imines Derived from Bisphosphonates and 3-Phosphorylated 2-Aza-1,3-dienes
作者:Francisco Palacios、Marie J Gil、Eduardo Martı́nez de Marigorta、Marta Rodrı́guez
DOI:10.1016/s0040-4020(00)00570-6
日期:2000.8
The synthesis and some reactions of imines derivedfrom aminoalkylbisphosphonates and 2-aza-1,3-butadienes is described. Bisphosphonylalkylimino compounds are useful intermediates in the preparation of aminoalkylbisphosphonate derivatives by reduction of the imino linkage with sodium triacetoxyborohydride as well as in the synthesis of 2-aza-1,3-butadienes by an olefination reaction. The electrocyclization
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.