Water → HCID 66965569, compound

Participants

Reaction Steps

To a solution of 4-((R)-2,2-dimethyl-[1,3]dioxolan-4-ylmethoxy)-2,6-dimethylbenzaldehyde (145 mg, 0.55 mmol) and 3,4-diamino-N-(3,4-dimethylphenyl)-benzamide (153 mg, 0.55 mmol) in DMSO (8 mL) was added Yb(OTf)3 (68 mg, 0.11 mmol) and the mixture was stirred at ambient temperature overnight. The reaction mixture was partioned between water and EtOAc and the aqueous layer was extracted with EtOAc. The organic layer was washed with water, brine, dried with MgSO4, filtered and concentrated. Purification by flash chromatography using heptane/EtOAc (1:2) as eluent gave 2-[4-((R)-2,2-dimethyl-[1,3]dioxolan-4-ylmethoxy)-2,6-dimethylphenyl]-3H-benzoimidazole-5-carboxylic acid (3,4-dimethylphenyl)-amide as a pale yellow solid 1H NMR (Methanol-d4, 400 MHz): δ 8.30 (d, 1H), 7.90 (d, 1H), 7.77 (dd, 1H), 7.47 (s, 1H), 7.44 (dd, 1H), 7.13 (d, 1H), 6.79 (s, 2H), 4.51 (m, 1H), 4.19 (q, 1H), 4.07 (d, 2H), 3.91 (q, 1H), 2.29 (s, 3H), 2.26 (s, 3H), 2.15 (s, 6H), 1.44 (s, 3H), 1.38 (s, 3H). MS (m/z) 500.3 (M+1); Retention time: 1.51 min (Method 10).

Provenance & Evidence