The reaction of o-azidobenzaldehyde 1 with TPP at 0°C leads to the expected iminophosphorane 2 and the indazole derivative 3 while at −20°C the phosphazide 4 was the only reaction product. The close related compounds 2 and 4 shows stricking differences in reactivity towards primary amines.
Synthesis and X-ray crystallographic study of 6,12-epiiminodibenzo[b,f][1,5]diazocines
作者:Pedro Molina、Antonio Arques、Alberto Tárraga、María del Rosario Obón、Concepción Foces-Foces、Nadine Jagerovic、José Elguero
DOI:10.1016/s0040-4020(97)10353-2
日期:1998.1
Seven 6,12-epiiminodibenzo[b,f][1,5]diazocines 2 with different substituents at position 13 have been prepared from o-(triphenylphosphoranylideneamino)benzaldehyde 1 and the corresponding aliphatic and aromatic primary amines in yields ranging from 40 to 80%. The molecular and crystal structures of componds 2d (R = 4 H3C-C6H4) and 2e (R = 4 H3CO-C6H4) have been determined by X-Ray analysis. Compound
由邻-(三苯基膦基亚烷基氨基)苯甲醛1和相应的脂族和芳族伯胺制备了7种6,13-二氨基二苯并[b,f] [1,5]重氮化合物2(在13位具有不同的取代基),产率为40-80 %。通过X射线分析确定了化合物2d(R = 4H 3 C-C 6 H 4)和2e(R = 4H 3 CO-C 6 H 4)的分子和晶体结构。化合物2d结晶为外消旋物,而化合物2e结晶为独特的对映异构体(绝对构型R,R)。