One-step construction of saturated six-membered rings directly using calcium carbide as an acetylene source: synthesis of 1,3,5-triaroylcyclohexanes

Saturated six-membered rings were constructed directly using calcium carbide as an acetylene source by one-step procedure, and functionalized cyclohexanes, 1,3,5-triaroylcyclohexanes, were efficiently synthesized by reactions of calcium carbide with aromatic or heteroaromatic aldehydes in high yield. This protocol has the advantages of using inexpensive and renewable resource, no flammable and explosive gas and no transition-metal catalysts. (C) 2016 Elsevier Ltd. All rights reserved.