Tetrabutylammonium Fluoride → HCID 178436670, compound

Participants

Reaction Steps

The product from Example 62A (300 mg, 0.68 mmol) in THF (10 mL) was treated with TBAF (1M) (1.7 mL, 1.7 mmol), stirred at rt for 1 hr, diluted with H2O and extracted with EtOAc (2×). The organic layer was dried over MgSO4, filtered and concentrated. The residue was purified by column chromatography using an Analogix® Intelliflash280™ (SiO2, 0-50% Hexane in ethyl acetate) to afford 183 mg (73%) of the title compound. 1H NMR (400 MHz, CDCl3) δ ppm 0.98 (t, J=7.36 Hz, 3 H) 1.36-1.50 (m, 2 H) 1.65 (s, 9 H) 1.67-1.77 (m, 2 H) 2.83 (dd, J=7.98 Hz, 2 H) 2.99 (s, 1 H) 3.94 (s, 3 H) 6.93 (d, J=8.59 Hz, 1 H) 7.52 (dd, J=8.59, 2.15 Hz, 1 H) 7.93 (s, 1 H) 8.28 (d, J=2.15 Hz, 1 H); MS (DCI/NH4+) m/z 371 (M+H)+.

Provenance & Evidence