Diels-Alder reaction of β-fluoro-β-nitrostyrenes with cyclic dienes

Beilstein J Org Chem. 2021 Jan 27:17:283-292. doi: 10.3762/bjoc.17.27. eCollection 2021.

Abstract

The Diels-Alder reaction of β-fluoro-β-nitrostyrenes with cyclic 1,3-dienes was investigated. A series of novel monofluorinated norbornenes was prepared in up to 97% yield. The reaction with 1,3-cyclohexadiene permits the preparation of monofluorinated bicyclo[2.2.2]oct-2-enes. The kinetic data of the reactions with 1,3-cyclopentadiene and 1,3-cyclohexadiene were used to calculate activation parameters. Furthermore, the synthetic utility of the cycloadducts obtained was demonstrated.

Keywords: Diels–Alder reaction; fluorine; nitrostyrene; norbornene; stereochemistry.

Grants and funding

This work was supported by RFBR, project number 20-33-70132.