One-Pot Synthesis of 9H-Indolo[3,2-c]pyrazolo[1,5-a]quinolines, 1H-Dipyrazolo[1,5-a:4′,3′-c]quinolines and 1H-Imidazo[4,5-c]pyrazolo[1,5-a]quinolines: Three New Heterocyclic Systems
作者:Wei Zhang、Yiming Zhang、Ren Wang、Zongjun Shi
DOI:10.1055/s-0030-1260044
日期:2011.6
An efficient synthesis of three new kinds of heterocyclic systems, 9H-indolo[3,2-c]pyrazolo[1,5-a]quinolines, 1H-dipyrazolo[1,5-a:4′,3′-c]quinolines and 1H-imidazo[4,5-c]pyrazolo[1,5-a]quinolines, has been achieved by the photochemical oxidative dehydrogenation and subsequent photocyclization and dehydrochlorination of 5-(2-chloro-1H-indol-3-yl)-, 5-(5-chloro-1H-pyrazol-4-yl)- and 5-(5-chloro-1H-i
有效合成三种新型杂环系统:9 H-吲哚并[3,2- c ]吡唑并[1,5- a ]喹啉,1 H-二吡唑并[1,5- a:4',3'- c喹啉和1 H-咪唑并[4,5- c ]吡唑并[1,5- a ]喹啉通过光化学氧化脱氢,随后的5-(2-氯-1 H-吲哚- 3-基)-,5-(5-氯-1 H-吡唑-4-基)-和5-(5-氯-1 H-咪唑-4-基)-1-苯基-4,5-二氢在吡啶存在下于丙酮中的-1 H-吡唑。 光脱氢-光环化-9 H-吲哚并[3,2- c ]吡唑并[1,5- a ]喹啉-1 H-二吡唑并[1,5- a:4′,3'- c ]喹啉-1 H-咪唑[4,5- c ]吡唑并[1,5- a ]喹啉