A Rh-Catalyzed Cycloisomerization/Diels–Alder Cascade Reaction of 1,5-Bisallenes for the Synthesis of Polycyclic Heterocycles

Published on 2019-07-11T19:47:45Z (GMT) by
A novel methodology to transform bisallenes into a variety of polycyclic derivatives employing rhodium­(I) catalysis has been developed. This transformation encompasses an intramolecular Rh-catalyzed cycloisomerization of bisallenes <b>1</b> to deliver a reactive cycloheptadiene, which concomitantly undergoes a regioselective [4 + 2] cycloaddition with alkenes. A complete mechanistic study of this transformation has been undertaken including DFT calculations. Overall, the methodology presented here constitutes a new and straightforward entry to polycyclic dihydroazepine and dihydrooxepine derivatives employing catalytic methods.

Cite this collection

Artigas, Albert; Vila, Jordi; Lledó, Agustí; Solà, Miquel; Pla-Quintana, Anna; Roglans, Anna (2019): A Rh-Catalyzed Cycloisomerization/Diels–Alder

Cascade Reaction of 1,5-Bisallenes for the Synthesis of Polycyclic

Heterocycles. ACS Publications. Collection.