2-(1-phthalimido-3-butenyl)-1-(2-propynyl)-1H-indole 、 alkaline earth salt of/the/ methylsulfuric acid 在
4 A molecular sieve 作用下,
以
甲苯 为溶剂,
以30%的产率得到(11SR,12aRS)-11-phthalimido-4,11,12,12a-tetrahydro-1H-cyclopenta[5,6]azepine[1,2-a]indole-2-one
参考文献:
名称:
Seven membered rings via intramolecular Pauson–Khand reactionsElectronic supplementary data (ESI) available: spectroscopic and analytical characterization of compounds 5–8 and 10. See http://www.rsc.org/suppdata/cc/b1/b108134a/
Seven membered rings via intramolecular Pauson–Khand reactionsElectronic supplementary data (ESI) available: spectroscopic and analytical characterization of compounds 5–8 and 10. See http://www.rsc.org/suppdata/cc/b1/b108134a/
The synthesis of indoles bearing alkenyl and alkynyl moieties in different positions of the nucleus is described. These compounds are used as substrates for the intermolecular Pauson−Khand reaction leading to tetracyclic cyclopentenones with formation of additional five- to seven-membered rings. Products are related to alkaloids such as mitosenes, clausines, ergotamines, or apogeissochizines.