Synthesen und chemische Reaktionen von 1-Cyano-1-isocyanoalkylphosphonsäureestern
作者:Joachim R. Simon、Richard Neidlein
DOI:10.1055/s-2000-6315
日期:——
1-Cyano-1-isocyanoalkylphosphonic acid esters 4 were synthesized starting from cyanoalkyl-phosphonic acid esters 1 by amination and formylation followed by dehydration with trichloromethylchloroformate (diphosgene) and triethylamine at low temperatures. Bromination of 4 gave 1,1-(dibromomethylideneamino)-1-cyanophosphonic acid esters 5.
1-氰基-1-异氰基烷基膦酸酯4是从氰基烷基膦酸酯1出发,通过氨化和甲酰化反应,再经低温脱水反应得到的,脱水剂为三氯甲基氯甲酸酯(二膦酯)和三乙胺。4的溴化反应生成1,1-(二溴甲烯基氨基)-1-氰基膦酸酯5。