A new facile synthesis of 2-substituted 1,3-butadiene derivatives via palladium-catalyzed cross-coupling reaction of 2,3-alkadienyl carbonates with organoboron compounds
A synthesis of 2-aryl-, 2-(1-alkenyl)-, and 2-alkyl-1,3-butadiene derivatives (2) by the palladium-catalyzed cross-coupling reaction of 2,3-butadienyl carbonates (1) with 9-alkyl-9-bicyclo[3.3.1]nonanes (9-alkyl-9-BBN), 1-alkenylboronic acids, or arylboronic acids is described. The reaction proceeded regioselectively with the palladium-phosphine complexes under neutral conditions.
Bridged to fused ring interchange. New methodology for the construction of fused cycloheptanes and cyclooctanes
作者:S.L. Gwaltney、S.T. Sakata、K.J. Shea
DOI:10.1016/0040-4039(95)01488-4
日期:1995.10
The type two intramolecular Diels-Alder cycloaddition coupled with a bridged to fused interchange provides an efficient method for synthesis of fused 5,7 and 5,8 ring systems.