Synthesis of N-vinyl 2,2-bisphosphonoaziridines from 1,1-bisphosphono-2-aza-1,3-dienes
摘要:
N-Vinyl 2,2-bisphosphonoaziridines are formed by treatment of 1,1-bisphosphono-2-aza-1,3-dienes with diazomethane. Depending on the substituents at the 4-position of the 1,1-bisphosphono-2-aza-1,3-dienes, exclusively 1-(ethenylamino)-2-phosphonoethenylphosphonates or mixtures of 1-(ethenylamino)-2-phosphonoethenylphosphonates and 2-imino-2-phosphonoethylphosphonates are obtained as side products. (C) 2011 Elsevier Ltd. All rights reserved.
Synthesis of 1,1-bisphosphono-2-aza-1,3-dienes, a new class of electron-deficient azadienes
摘要:
1,1-Bisphosphono-2-aza-1,3-dienes are formed by 1,4-dehydrohalogenation of the corresponding N-(bis-phosphonomethyl)-alpha-haloimines in moderate to good yields. The precursors could be formed by condensation of bisphosphono-amines and the corresponding alpha-haloaldehydes. (C) 2008 Elsevier Ltd. All rights reserved.