Synthesis of pyrazole-fused heterocycles by thermal rearrangement of<i>N</i>-aziridinylimino ketenimines
作者:Kee-Jung Lee、Dong-Wook Kim、Boo-Geun Kim
DOI:10.1002/jhet.5570400228
日期:2003.3
triphenylphosphine, carbon tetrachloride, and triethylamine in dichloromethane (Appel's condition) provides a new route to pyrazole-fused heterocycles such as 2,3-dihydro-lH-imidazo[1,2-b]pyrazoles 15 and 9,10-dihydro-47H-pyrazolo[5,l-b]-[1,3]benzodiazepines 17 via the thermal rearrangement of the expected N-aziridinylimino ketenimines 12.
的反应Ñ -aziridinylimino羧酰胺11与三苯基膦的三乙胺在二氯甲烷中的混合物,四氯化碳,和(阿佩尔的条件)提供了新的途径吡唑稠合的杂环,如2,3-二氢-1- ħ咪唑并[1,2 - b ]吡唑15和9,10-二氢47 ħ -吡唑并[5,1- b ] - [1,3]苯并二氮杂类17经由预期的热重排ñ -aziridinylimino烯酮亚胺12。