Synthesis of 4-Aryl-3,4-dihydro- and 2,4-Diaryl-2,3,3a,4-tetrahydrochromeno[3,4-<i>d</i>][1,2,3]diazaphospholes
作者:Yongzhou Hu、Huazhou Ying、Yongjian Fan、Tao Liu
DOI:10.1055/s-2007-986666
日期:2007.10
Reaction of 2-arylchromone-4-semicarbazones with POCl3 in the presence of SOCl2, followed by treatment with EtOH or MeOH gave 4-aryl-3,4-dihydrochromeno[3,4-d][1,2,3]diazaphospholes. Likewise, 2,4-diaryl-2,3,3a,4-tetrahydro-chromeno[3,4-d][1,2,3]diazaphospholes were obtained from 2-phenylchromone-4-arylhydrazones.
在 SOCl2 存在下,2-芳基色酮-4-氨基羰基与 POCl3 反应,然后用 EtOH 或 MeOH 处理,得到 4-芳基-3,4-二氢苯并吡喃并[3,4-d][1,2,3]二氮杂磷。同样,从 2-苯基色酮-4-芳基肼中也得到了 2,4-二芳基-2,3,3a,4-四氢铬并[3,4-d][1,2,3]二氮磷酸盐。