Triethylamine → HCID 25131204, compound

Participants

Reaction Steps

Trimethylsilyl trifluoromethanesulfonate (2.5 mL) was added dropwise to a 0° C. solution of (4R)-4-benzyl-3-({(1R,2R)-2-[(benzyloxy)methyl]-4-oxocyclohexyl}carbonyl)-1,3-oxazolidin-2-one (57.89 g, 138 mmol) and 1,2-bis-(trimethylsilyloxy)ethane (35.4 g, 172 mmol) in CH2Cl2 (400 mL) followed by stirring at rt for 4 h. Triethylamine (3 mL) was then added at 0° C. and the mixture was washed with saturated aqueous NaHCO3 solution and dried over Na2SO4. Concentration in vacuo gave (4R)-4-benzyl-3-({(7R,8R)-7-[(benzyloxy)methyl]-1,4-dioxaspiro[4.5]dec-8-yl}carbonyl)-1,3-oxazolidin-2-one as a thick, tan colored syrup. 1H NMR (500 MHz, d6-acetone) δ 7.36-7.22 (10H, m), 4.48 (1H, m), 4.42 (2H, s), 4.11 (1H, dd, J= 3.1, 8.9 Hz), 3.97 (4H, m), 3.94-3.90 (1H, t, J= 9.0 Hz), 3.67 (1H, m), 3.44-3.38 (2H, m), 3.09 (1H, dd, J= 3.3, 13.5 Hz), 2.92 (1H, dd, J= 8.3, 13.5 Hz), 2.52 (1H, m), 1.97 (1H, m), 1.86-1.76 (3H, m), 1.57-1.50 (1H, m), 1.44 (1H, t, J= 12.8 Hz).

Provenance & Evidence