Triethylamine → HCID 57964908, compound

Participants

Reaction Steps

1-[1-(2,2-Difluoro-benzo[1,3]dioxol-5-ylmethyl)-piperidin-4-yl]-4-(4-methanesulfonyl-phenoxy)-1H-pyrazolo[3,4-d]pyrimidine was prepared according to General Procedure H by the reaction of 4-(4-methanesulfonyl-phenoxy)-1-piperidin-4-yl-1H-pyrazolo[3,4-d]pyrimidine trifluoroacetate salt (Intermediate 27) with 2,2-difluoro-5-formylbenzodioxole (available from Aldrich Chemical Company, Inc., Milwaukee, Wis., USA), triethylamine, and sodium triacetoxyborohydride in 1,2-dichloroethane. 1H NMR (400 MHz, DMSO-d6) δ 1.89-1.98 (m, 2H), 2.15-2.25 (m, 4H), 2.92-2.98 (m, 2H), 3.30 (methyl sulfonyl and water peak), 3.57 (s, 2H), 4.77-4.83 (m, 1H), 7.18-7.20 (m, 1H), 7.35-7.39 (m, 2H), 7.62-7.64 (m, 2H), 8.04-8.07 (m, 2H), 8.37 (s, 1H), 8.55 (s, 1H). Mass spectrum MH+=544.

Provenance & Evidence