STEREOSELECTIVE SYNTHESIS OF 2-SUBSTITUTED 1-IODO-1,3-dIENES BY THE ADDITION OF MeMgSnBu3 TO THE CONJUGATED TERMINAL ENYNES; STEREOCONTROLLED SYNTHESIS OF (2E,4Z,6E)-DEHYDRODENDROLASIN
作者:Jun'ichi Uenishi、Reiko Kawahama
DOI:10.3987/com-12-s(n)84
日期:——
Addition of MeMgSnBu3 to the conjugated enynes 1 and 5 were thoroughly studied. The addition reactions were proceeded stereoselectively at -20 degrees C, but a thermal isomerization occurred when the reaction was carried out at 0 degrees C. (2E,4Z,6E)-Dehydrodendrolasin 8 was synthesized using the isomerized 2-methyl-1-iodo-1,3-diene product 13.