TIETZE, LUTZ F.;BRUMBY, THOMAS;PEIFFER, THOMAS, LIEBIGS ANN. CHEM.,(1988) N 1, 9-12
作者:TIETZE, LUTZ F.、BRUMBY, THOMAS、PEIFFER, THOMAS
DOI:——
日期:——
Regiochemical aspects of intramolecular cycloadditions of nitrones derived from N-(2-alkenyl)-2-pyrrolecarbaldehydes. Competitive entries to pyrrolizidine and indolizidine derivatives
作者:Gianluigi Broggini、Concetta La Rosa、Tullio Pilati、Alberto Terraneo、Gaetano Zecchi
DOI:10.1016/s0040-4020(01)00785-2
日期:2001.9
Intramolecularcycloadditions of unsaturated nitrones derived from a series of N-(2-alkenyl)-2-pyrrolecarbaldehydes (2) have been systematically studied. A pronounced substituent effect has been observed as far as the competitive formation of fused- and bridged-ring regioisomers are concerned. Further elaboration of the two kinds of cycloadducts has given pyrrolizidine and indolizidine derivatives