bifonazole and pyrrolnitrin, two compounds belonging to the class of antimycotic drugs. The synthesis of the title pyrroles has been performed starting from 1,3-diaryl-2-propen-1-ones, which were reacted with tosylmethyl isocyanide to give 3-aroyl-4-arylpyrroles. Reduction of the resulting compounds by lithiumaluminumhydride furnished the related alcohols, which were treated with 1,1'-carbonyldimidazole to
Abstract A novel methodology has been devised for the chemoselective reduction of enones involving the use of n Bu3SnH and azobisisobutyronitrile. The 1,4-reduction of variously substituted α,β-unsaturated cyclic and acyclic enones has been successfully carried out under free radical reaction conditions. The reaction has been determined to proceed via single-electron transfer. [Supplementary materials
摘要 已经设计了一种涉及使用 n Bu3SnH 和偶氮二异丁腈化学选择性还原烯酮的新方法。各种取代的α,β-不饱和环状和无环烯酮的1,4-还原已在自由基反应条件下成功进行。已确定该反应通过单电子转移进行。[本文提供补充材料。访问出版商的 Synthetic Communications® 在线版,获取以下免费补充资源:完整的实验和光谱细节。] 图形摘要