Rhodium Enalcarbenoids: Direct Synthesis of Indoles by Rhodium(II)-Catalyzed [4+2] Benzannulation of Pyrroles
作者:Sudam Ganpat Dawande、Vinaykumar Kanchupalli、Jagadeesh Kalepu、Haribabu Chennamsetti、Bapurao Sudam Lad、Sreenivas Katukojvala
DOI:10.1002/anie.201400161
日期:2014.4.14
electrophilic rhodium enalcarbenoid which results from rhodium(II)‐catalyzed decomposition of a new class of enaldiazo compounds. The synthetic utility of these enalcarbenoids has been successfully demonstrated in the first transition‐metal‐catalyzed [4+2] benzannulation of pyrroles, thus leading to substituted indoles. The new benzannulation has been applied to the efficient synthesis of the natural
本文公开了一种前所未有的亲电铑烯醛烯类化合物的设计,它是由铑(II)催化的一类新型烯二唑化合物分解产生的。这些烯醛类化合物的合成用途已在吡咯的第一个过渡金属催化的[4 + 2]苯并环中成功地得到证明,从而导致了吲哚的取代。新的苯环已被用于有效合成天然产物leiocarpone和有效的脂肪细胞脂肪酸结合蛋白抑制剂的合成。