Intramolecular carbocupration reaction of unactivated alkynes bearing a stabilized nucleophile: Application to the synthesis of iridoid monoterpenes
摘要:
The copper-promoted cycloisomerization of unsaturated alkynes bearing a stabilized nucleophile is described, providing a novel synthesis of various iridoid monoterpenes. (C) 1999 Elsevier Science Ltd. All rights reserved.
Efficient Synthesis of Bicyclic Lactones via Tungsten-Mediated Intramolecular Cycloalkenation
作者:Kwei-Wen Liang、Malapaka Chandrasekharam、Chien-Le Li、Rai-Shung Liu
DOI:10.1021/jo980728m
日期:1998.10.1
these functionalized tungsten-alkynols with BF(3).Et(2)O leads to intramolecular cycloalkenation, producing bicyclic tungsten-oxacarbeniums in high yields. Air oxidation of these oxacarbenium salts produces unsaturated bicyclic lactones in good yields. The lactone products include delta- and epsilon-lactones fused with five-, six- and seven-membered carbocyclic rings. The preceding bicyclic tungst
Second Generation Palladium-Catalyzed Cycloalkenylation in Iridoid Lactone Synthesis: Total Syntheses of (±)-Onikulactone and (±)-Mitsugashiwalactone
作者:Masahiro Toyota、Megumi Saeki
DOI:10.3987/com-10-s(e)115
日期:——
Type-II iridoid lactones, onikulactone (1) and mitsugashiwalactone (2), were synthesized by employing the second generation palladium-catalyzed cycloalkenylation reaction as the key step.
AMRI, H.;VILLIERAS, J., TETRAHEDRON LETT., 28,(1987) N 45, 5521-5524
作者:AMRI, H.、VILLIERAS, J.
DOI:——
日期:——
Intramolecular carbocupration reaction of unactivated alkynes bearing a stabilized nucleophile: Application to the synthesis of iridoid monoterpenes
作者:Didier Bouyssi、Nuno Monteiro、Geneviève Balme
DOI:10.1016/s0040-4039(98)02630-6
日期:1999.2
The copper-promoted cycloisomerization of unsaturated alkynes bearing a stabilized nucleophile is described, providing a novel synthesis of various iridoid monoterpenes. (C) 1999 Elsevier Science Ltd. All rights reserved.