3-Chloro-4-fluorophenylboronic Acid (contains varying amounts of Anhydride) → 6'-(3-Chloro-4-fluorophenyl)-5-methyl-2'',3'',5'',6''-tetrahydro-3'H-dispiro[imidazole-2,1 indene-2',4''-pyran]-4-amine

Participants

Reaction Steps

The title compound was synthesized as described for Example 26a in 42% yield, starting from 6′-bromo-5-methyl-2″,3″,5″,6″-tetrahydro-3′H-dispiro[imidazole-2,1′-indene-2′,4″-pyran]-4-amine (Example 25, 75 mg, 0.22 mmol) and 3-chloro-4-fluorobenzeneboronic acid (45.1 mg, 0.26 mmol); 1H NMR (400 MHz, DMSO-d6) δ ppm 7.72 (dd, 1H), 7.52 (m, 2H), 7.42 (m, 2H), 6.80 (d, 1H), 6.60 (br. s, 1H), 3.66 (m, 2H), 3.48 (t, 1H), 3.40 (m, 1H), 3.20 (m, 1H), 3.07 (m, 1H), 2.19 (s, 3H), 1.71 (td, 1H), 1.23 (m, 3H); MS (ES+) m/z 398 [M+H]+.

Provenance & Evidence