Unexpected Staudinger reaction of α-azidoacetonitriles α-phenyl substituted with triphenylphosphine. Preparation, X-ray crystal and molecular structures of a phosphazine, an aminophosphonium carbanion salt and a phosphazide, with (Z)-configuration
作者:Pedro Molina、Carmen López-Leonardo、Javier Llamas-Botía、Concepción Foces-Foces、Cristina Fernández-Castaño
DOI:10.1016/0040-4020(96)00499-1
日期:1996.7
Staudinger reaction of α-azidophenylacetonitrile with triphenylphosphine in 1:2 molar ratio provides the triphenylphosphazine 4 derived from α-diazophenylacetonitrile, whereas in 2:1 molar ratio the final product is found to be the aminotriphenylphosphonium salt of phenylmalononitrile 6. However, the Staudinger reaction of α-azidodiphenylacetonitrile with triphenylphosphine affords the corresponding
在1α-azidophenylacetonitrile与三苯基膦的施陶丁格反应:2的摩尔比提供triphenylphosphazine 4从α-diazophenylacetonitrile衍生,而在2:1的摩尔比最终产物被发现是phenylmalononitrile的aminotriphenylphosphonium盐6。然而,α-叠氮二苯乙腈与三苯基膦的斯托丁格反应得到相应的(Z)-磷叠氮化物17。化合物4,6和17的晶体和分子结构已通过X射线分析确定。化合物17是第一个分离的磷叠氮化合物,相对于PN 3的中心NN键呈现(Z)-构型C部分(PNNN = 0.0(3)°)。