Chiral phosphoramide-catalyzed enantioselective synthesis of 2,3'-diindolylarylmethanes from indol-2-yl carbinols and indoles

We present the first asymmetric reaction of indol-2-yl carbinols with indole derivatives catalyzed by chiral phosphoramides for the enantioselective synthesis of 2,3'-diindolylarylmethanes in excellent yields of over 90% as well as high enantioselectivity of up to 96% ee.