Cyclic Phosphonium Salts by Chlorination of Benzo[c]-2-(2-Chloro-1,3-Alkadienyl)-2-Oxo-1,3,2-Dioxaphospholanes
作者:Valerij Ch. Christov
DOI:10.1080/10426509808545477
日期:1998.2.1
Benzo[c]-2-(2-chloro-1,3-alkadienyl)-2-oxo-1,3,2-dioxaphospholanes 2 have been prepared by reaction of the 2-chloro-1,3-alkadienylphosphonic dichlorides 1 with catechol in the presence of triethylamine. The chlorination of 2 takes place with formation of benzo[c]-1,3,2-dioxaphospholane-2-spiro-2′-(4′,5′-dichloro-5′,6′-dihydro-2H-1′,2′-oxaphosphorinium) chlorides.
Benzo[c]-2-(2-chloro-1,3-alkadienyl)-2-oxo-1,3,2-dioxaphospholanes 2 已通过 2-chloro-1,3-alkadienylphosphonic dichlorides 1 与儿茶酚在三乙胺存在下。2 的氯化反应生成 benzo[c]-1,3,2-dioxaphospholane-2-spiro-2'-(4',5'-dichloro-5',6'-dihydro-2H-1' ,2'-氧杂磷鎓)氯化物。