3-Cyanophenylboronic acid → HCID 67176039, compound

Participants

Reaction Conditions

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° C. 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