2,6-Lutidine → HCID 67430702, compound

Participants

Reaction Conditions

Reaction Steps

To a solution of the crude alcohol 12 (2.7 g, 9.1 mmol) in CH2Cl2 (10 mL) under argon, cooled to 0° C., 2,6-lutidine (2.6 mL, 22.7 mmol) and triisopropylsilyl triflate (3.6 mL, 13.6 mmol) were added. The reaction mixture was stirred at 0° C. for 30 min and then at room temperature for 2 h and diluted with CH2Cl2 (25 mL). The organic layer was separated and washed with 10% HCl (50 mL), NaHCO3 (50 mL, sat) and NaCl (50 mL, sat), dried (Na2SO4), filtered and concentrated. The crude oil was purified by column chromatography (silica gel, diethyl ether/hexanes 2:98 to 15:85) to yield 13 (2.9 g, 70%) as colorless oil. 1H-NMR (500 MHz, CDCl3): 0.88 (d, J=6.8 Hz, 3H), 0.92 (d, J=6.7 Hz, 3H), 1.01-1.07 (m, 2H), 1.97-2.04 (m, 1H), 2.53 (dd, J=15.3 and 4.7 Hz, 1H), 2.60 (dd, J=15.2 and 7.5 Hz, 1H), 3.57 (s, 3H), 3.59-3.65 (m, 1H), 4.34-4.40 (m, 1H), 4.78 (d, J=10.3 Hz, 1H), 5.06-5.09 (m, 2H), 7.27-7.35 (m, 5H).

Provenance & Evidence