tert-Butyl piperazine-1-carboxylate → [6-Bromo-5-(1-isopropyl-piperidin-4-yloxy)-1H-indol-2-yl]-(4-cyclopropanesulfonyl-piperazin-1-yl)-methanone

Participants

Reaction Steps

The title compound was synthesized in analogy to example 1, from 6-bromo-5-(1-isopropyl-piperidin-4-yloxy)-1H-indole-2-carboxylic acid hydrochloride (example 1, intermediate a) and cyclopropylsulfonyl-piperazine (prepared in analogy to International Patent Application Publ. No. WO 2003/064413 by using cyclopropylsulfonyl chloride and tert-butyl 1-piperazinecarboxylate) to afford the title compound as a light-yellow solid (62%).

Provenance & Evidence