Triethylamine → HCID 14859978, compound

Participants

Reaction Steps

To a solution of 3',5'-di-O-trityl-1-benzylinosine (2.0 g, 2.4 mmol), 4-dimethylaminopyridine (290 mg, 2.4 mmol) and triethylamine (480 mg, 4.8 mmol) in methylene chloride (40 mL) is added triflyl chloride (800 mg, 4.8 mmol), and the mixture is stirred at room temperature for 1 hour, and then concentrated in vacuo. The residue is chromatographed on a silica gel column using a mixture of tetrachloromethane and ethyl acetate (5:1 v/v) as the eluent to give 3',5'-di-O-trityl-2'-O-triflyl-1-benzylinosine as a foam (1.82 g, 78% yield), 1H NMR (Me2SO-d6) δ 2.92-2.96 (2H, m, H-5',5"), 3.62-3.69 (1H, m, H-4'), 4.41-4.43 (1H, m, H-3'), 5.23 (2H, s, CH2Ph), 5.89-5.95 (1H, m, H-2'), 6.66 (1H, d, H-1', J1',2' =6.3 Hz), 7.18-7.34 (35H, m, 2×Tr and CH2 Ph), 8.29, 8.32 (1H each, s, H-2, H-8). Analyses calculated for C56 H45F3N4O5S: C, 68.98, H, 4.65, N, 5.63. Found: C, 68.94, H, 4.76, N, 5.63.

Provenance & Evidence