Copper-Promoted Synthesis of 2-Fulleropyrrolines via Heteroannulation of [60]Fullerene with α-Amino Ketones
作者:Sheng-Peng Jiang、Qing-Hua Wu、Guan-Wu Wang
DOI:10.1021/acs.joc.7b01237
日期:2017.10.20
A Cu(OAc)2-promoted heteroannulation of [60]fullerene with α-amino ketones has been exploited for the efficient synthesis of 2-fulleropyrrolines containing a trisubstituted or tetrasubstituted C═C bond via the formation of C–C and C–N bonds. Mechanistic study indicates that a radical process should be involved in this transformation. Furthermore, theoretical computations show that the process via the
Heteroannulation of arynes with N-aryl-α-aminoketones for the synthesis of unsymmetrical N-aryl-2,3-disubstituted indoles: an aryne twist of Bischler–Möhlau indole synthesis
Reaction of 2-(trimethylsilyl)aryl triflates 1 with N-aryl-alpha-amino ketones 2 afforded N-aryl-2,3-disubstituted indoles in good to excellent yields with complete control of the substitution patterns. This methodology allowed for the first time a one-stepsynthesis of unsymmetrical 2,3-dialkyl substituted indoles in a regiospecific manner.