作者:Christopher C. Brown、Christoph Glotzbach、Douglas W. Stephan
DOI:10.1039/c0dt00261e
日期:——
Cyclic phosphinimines are strong bases with structural similarities to carbene ligands. The cyclic phosphinimines R2PNCPh2(CH2CH(CO2Me)) (R = Ph 4, i-Pr 5, Me 6), R2PNCPh2(CCOMe)2 (R = Ph 7, i-Pr 8) and Ph2PNCPh2(CH2CH(CN)) 9 are readily prepared via cycloaddition of the compounds R2PNCPh2 (R = Ph 1, i-Pr 2, Me 3) and olefins or alkynes. In the case of 4 this phosphinimine proved to be moisture sensitive, converting to Ph2C(NH2)CH(CO2Me)CH2P(O)Ph210 upon hydrolysis. Nonetheless, the Ag(I) and Au(I) complexes [Ph2PNCPh2(CH2CH(CO2Me)}2Ag][NO3] 11 (Ph2PNCPh2(CH2CH(CO2Me)AuCl 12 and (Ph2PNCPh2(C(CO2Me)2)AuCl 13 were prepared and characterized. Compounds 1, 2 and 7–13 have been characterized crystallographically.
环状膦酰亚胺是一种强碱,其结构与碳烯配体相似。环状膦酰亚胺 R2PNCPh2(CH2CH(CO2Me)) (R = Ph 4, i-Pr 5, Me 6)、R2PNCPh2(CCOMe)2 (R = Ph 7, i-Pr 8) 和 Ph2PNCPh2(CH2CH(CN)) 9 很容易通过化合物 R2PNCPh2 (R = Ph 1, i-Pr 2, Me 3) 与烯烃或炔烃的环加成反应制备出来。在 4 的情况下,这种膦酰亚胺被证明对湿度敏感,在水解时会转化为 Ph2C(NH2)CH(CO2Me)CH2P(O)Ph210。然而,Ag(I) 和 Au(I) 复合物 [Ph2PNCPh2(CH2CH(CO2Me)}2Ag][NO3] 11 (Ph2PNCPh2(CH2CH(CO2Me)AuCl 12 和 (Ph2PNCPh2(C(CO2Me)2)AuCl 13)被制备出来并进行了表征。对化合物 1、2 和 7-13 进行了晶体学表征。