Treatment of indoles 1a-k with hexamethylenetetramine (HMTA) (2) in presence of a catalytic amount (10 mol%) of InCl3 resulted in 3,3′-diindolylmethane (DIM) derivatives 3a-k in excellent yields.
将
吲哚1a-k与
六亚甲基四胺(HMTA)(2)在催化剂
铟氯化物(InCl3,10摩尔%)存在下反应,得到了3,3′-二
吲哚基
甲烷(DIM)衍
生物3a-k,产率极高。