J. Marcocontelles et al., PALLADIUM-CATALYZED REDUCTION OF A PROPARGYLIC ACETATE DERIVED FROM ASUGAR WITH SMI2 - SOME UNEXPECTED RESULTS, Tetrahedron : asymmetry, 7(1), 1996, pp. 105-108
We describe here the unexpected result that we have observed in the pa
lladium-catalyzed reduction of the propargylic acetate 3 derived from
a sugar with samarium diiodide. In addition to traces of the expected
allene derived product 4, we have obtained mostly alpha-elimination le
ading to enynes 5 in moderate yield.