Add time:09/10/2019 Source:sciencedirect.com
A stereoselective method for the preparation of dibenzoxapine containing tetrasubstituted exocyclic E-alkenes has been developed. The key reaction involves an intramolecular cyclocarbopalladation of alkynes to form a vinylpalladium species and subsequently coupling the vinylpalladium with Methylboronic acid (cas 13061-96-6). The approach provides a straightforward method for the synthesis of tetrasubstituted exocyclic E-alkenes.
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