Formaldehyde → HCID 67441954, compound

Participants

Reaction Steps

To a solution of EXAMPLE 194C (470 mg) in tetrahydrofuran (3 mL) and acetic acid (1 mL) was added 37% formaldehyde solution in water (0.42 mL) and MP-CNBH3 resin (947 mg, 2.38 mmol/g)). The reaction mixture was stirred overnight at room temperature. The resin was filtered off and reaction mixture was then concentrated. The residue was purified by flash chromatography, eluting with ethyl acetate, followed by a gradient of 3-10% methanol/dichloromethane. 1H NMR (500 MHz, dimethylsulfoxide-d6) δ 8.42 (d, 1H), 8.34 (m, 1H), 7.78 (dd, 1H), 7.53 (d, 1H), 7.36 (d, 2H), 7.19 (t, 1H), 7.08 (m, 3H), 6.95 (m, 1H), 6.76 (dd, 1H), 6.67 (m, 2H), 6.45 (d, 1H), 3.53 (m, 2H), 3.16 (m, 7H), 2.83 (m, 4H), 2.61 (br m, 1H), 2.27 (m, 4H), 2.18 (m, 3H), 1.98 (m, 3H), 1.41 (m, 2H), 0.94 (s, 6H).

Provenance & Evidence