CAMPBELL M. M.; COSFORD N.; LI ZONGLI; SAINSBURY M., TETRAHEDRON, 43,(1987) N 6, 1117-1122
作者:CAMPBELL M. M.、 COSFORD N.、 LI ZONGLI、 SAINSBURY M.
DOI:——
日期:——
A new route to 3-heteroarylindoles
作者:Malcolm M Campbell、Nicholas Cosford、Li Zongli、Malcolm Sainsbury
DOI:10.1016/s0040-4020(01)90049-3
日期:1987.1
The syntheses of 3-(2-pyrrolyl)- and 3-(2-furanyl)-indoles are described via the ring-closure of 2-(2-nitrophenylethenyl)-pyrroles or -furans, respectively, with triethylphosphite. The necessary starting compounds are obtained by Lewis acid mediated Michael type addition reactions of either pyrroles or furans to β-nitrostyrene, followed by bromination/dehydrobromination. The ethenylpyrroles may also