Total synthesis of terpenes. XIX. Synthesis of 8-methoxy-4a.beta., 10b.beta., 12a.alpha.-trimethyl-3,4,4a,4b.alpha.,5,6,10b,11,12,12a-decahydrochrysen-1(2H)-one, a key intermediate in the total synthesis of (+-)-shionone
of C–H bonds with an inorganic-ligand supported iron catalyst and hydrogen peroxide to prepare the corresponding ketones was achieved using the bromideion as a promoter. Preliminary mechanistic investigations indicated that the bromideion can bind to FeMo6 to form a supramolecular species (FeMo6·2Br), which can effectively catalyze the reaction.
Total synthesis of terpenes. XIX. Synthesis of 8-methoxy-4a.beta., 10b.beta., 12a.alpha.-trimethyl-3,4,4a,4b.alpha.,5,6,10b,11,12,12a-decahydrochrysen-1(2H)-one, a key intermediate in the total synthesis of (+-)-shionone
作者:Robert E. Ireland、Marcia I. Dawson、Conrad J. Kowalski、Christopher A. Lipinski、David R. Marshall、Jefferson W. Tilley、Jon Bordner、Benes L. Trus