Conversion of Cyclic Ketones to 2,3-Fused Pyrroles and Substituted Indoles
作者:Joshua S. Alford、Jillian E. Spangler、Huw M. L. Davies
DOI:10.1021/ja405043g
日期:2013.8.14
A highly effective synthesis of 2,3-fused pyrroles from cyclicketones has been achieved. The transformation includes a rhodium-catalyzed reaction of 4-alkenyl-1-sulfonyl-1,2,3-triazoles featuring an unusual 4π electrocyclization. The methodology was further extended to the synthesis of indoles using a one-pot reaction starting from 1-ethynylcyclohexenes.
Rhodium(<scp>ii</scp>)-catalyzed transannulation approach to <i>N</i>-fluoroalkylated indoles
作者:Olga Bakhanovich、Blanka Klepetářová、Petr Beier
DOI:10.1039/d3ob01415k
日期:——
substituted cyclohexenyl acetylenes with azido(per)fluoroalkanes afforded 4-cyclohexenyl-substituted N-(per)fluoroalkylated 1,2,3-triazoles. Their rhodium(II)-catalyzed transannulation led to fused N-(per)fluoroalkyl pyrroles and subsequent oxidation provided N-(per)fluoroalkyl indoles.
铜( I )催化取代的环己烯基乙炔与叠氮基(全)氟烷烃的环加成得到4-环己烯基取代的N- (全)氟烷基化的1,2,3-三唑。它们的铑( II )催化环转作用产生稠合的N- (全)氟烷基吡咯,随后氧化得到N- (全)氟烷基吲哚。
STUETZ, A.;GRANITZER, W.;ROTH, S., TETRAHEDRON, 1985, 41, N 23, 5685-5696