Tm. Heidelbaugh et al., A SHORT SYNTHESIS OF (+ -)-ALLOYOHIMBANE VIA A THIOISOMUNCHNONE BASEDINTRAMOLECULAR DIPOLAR-CYCLOADDITION REACTION/, Tetrahedron letters, 39(27), 1998, pp. 4757-4760
Thioisomunchnone dipoles were generated by the reaction of bromoalkeno
yl chlorides with thioamides. The intramolecular dipolar-cycloaddition
reaction was used for a short synthesis of the yohimbanoid alkaloid (
+/-)-alloyohimbane. (C) 1998 Elsevier Science Ltd. All rights reserved
.