Patent ID: 11884613
Assignee: CHIROGATE INTERNATIONAL INC.
Field: Organic fine chemistry (Chemistry)
Classification: CPC C | IPC C

Claim 8:
9. A process according to claim 7, wherein the intramolecular cyclization reaction comprises the steps of:
(a) hydroboration of the compound of Formula 3b with a boron reagent, followed by oxidation with basic hydrogen peroxide to form a compound of Formula 4b-1:, wherein P, X and Y are as defined in claim 7;

(b) sulfonylation of the compound of Formula 4b-1 in the presence of a base with a sulfonyl donor to form a compound of Formula 4b-2:, wherein Z is a sulfonyl group; and P, X and Y are as defined above; and

(c) intramolecular alkylation of the compound of Formula 4b-2 in the presence of a base to form the compound of Formula 4b.