Efficient regioselective approach for polysubstituted benzene derivatives by intermolecular [2+2+2] cyclotrimerization of alkynes

Add time:07/14/2019    Source:sciencedirect.com

We present an important opinion about the electron effect of the intermolecular cyclcotrimerization of unsymmetrical diaryalkynes in the presence of Co2(CO)8 on the production of corresponding 1,2,4-regioisomer or 1,3,5-regioisomer derivatives with excellent yields and high regioselectivity.

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