3-Cyanophenylboronic acid → HCID 67176039, compound

Participants

Reaction Steps

Pd(PPh3)2Cl2 (3 mg, 0.003 mmol) in a 10 mL of flask under Ar2 was treated sequentially with 7-bromo-2′-methyl-3-phenyl-3,4-dihydro-2H,2′H-spiro[benzo[b]oxepine-5,5′-[1,2,4]oxadiazol]-3′-amine (77.4 mg, 0.2 mmol) in [1,4]dioxane (2.0 mL), Cs2CO3 (2 N, 1 mL) and 3-cyanophenylboronic acid (58.8 mg, 0.4 mmol) The mixture was heated under 120 at Ar2 under microwave for 30 minutes. The reaction mixture was concentrated in vacuo to give the residue, which was purified preparative TLC and HPLC to give 3-(3′-amino-2′-methyl-3-phenyl-3,4-dihydro-2H,2′H-spiro[benzo[b]oxepine-5,5′-[1,2,4]oxadiazole]-7-yl)benzonitrile (20 mg, 24%). 1H-NMR (MeOD): 2.67 (m, 2H), 3.48 (m, 3H), 3.65 (m, 1H), 3.88 (m, 0.3H), 4.19 (m, 0.7H), 4.50 (d, 1H), 7.23 (m, 6H), 7.66 (m, 3H), 7.81 (m, 1H), 8.02 (m, 3H).

Provenance & Evidence