Reactions of -Aminoalkylphosphonates with Iso(thio)cyanatophosphates(phosphonates, phosphinates). Synthesis of 1,3,4-Diazaphospholidines and 1,3,4-Oxaza(thiaza)phospholines
作者:N. A. Khailova、A. A. Shaimardanova、G. M. Saakyan、T. A. Zyablikova、N. M. Azancheev、D. B. Krivolapov、A. T. Gubaidullin、I. A. Litvinov、R. Z. Musin、G. A. Chmutova、M. A. Pudovik、A. N. Pudovik
DOI:10.1023/b:rugc.0000007644.95638.fc
日期:2003.8
Phenyl alpha-aminoalkylphosphonates add to phenyl iso(thio)cyanates to give saturated heterocycles, 1,3,4-diazaphospholidin-2-(thi)ones. The reaction of diphenyl (alpha-methylamino)benzylphosphonate with diethyl isothiocyanatophosphate involves initial formation of 1, 3,4-tiazaphospholidine-2-thiones containing exo- and endocyclic phosphorus atoms. These products are readily hydrolyzed in air, yielding diethyl isothiocyanatophosphate and phenyl hydrogen (alpha-methylamino)benzylphosphonate. The final products of the reaction of chloromethyl isocyanatophosphonates with aminoalkylphosphonates are 1,3,4-oxazaphospholines. Phenyl aminoalkylphosphonates react with chloromethyl isocyanatophosphonates to give saturated heterocycles, 1,3,4-diazaphospholidines, whereas with chloromethyl isothiocyanatophosphonates 1,3,4-thiazaphospholines are formed.