Tetrabutylammonium Fluoride → HCID 50943691, compound

Participants

Reaction Steps

A mixture of 2-(5-((tert-butyldimethylsilyloxy)methyl)thiophen-2-yl)-N-(3-cyclopropyl-1H-pyrazol-5-yl)-5-ethynylpyrimidin-4-amine (240 mg, 0.53 mmol, 1.0 eq), TBAF (694 mg, 2.66 mmol, 5.0 eq) in THF (20 ml) was stirred at room temperature for 30 min. The reaction mixture was evaporated under reduce pressure and the resulting residue was dissolved in EtOAc. The organic layers were washed with water, brine, dried (Na2SO4) and filtered. The filtrate was concentrated the residue was recrystalized by ether to give title compound (5-(4-(5-cyclopropyl-1H-pyrazol-3-ylamino)-5-ethynylpyrimidin-2-yl)thiophen-2-yl)methanol (Compound 196) (39 mg, 22%). LC-MS (m/z)=338.0 [M+H]+. 1H NMR (400 MHz, DMSO-d6): δ 0.74 (s, 2H), 0.92-0.97 (m, 2H), 1.94 (s, 1H), 4.67 (d, J=5.2 Hz, 2H), 4.83 (s, 1H), 5.61-5.63 (m, 1H), 6.52 (s, 1H), 7.03 (d, J=1.2 Hz, 1H), 7.72 (d, J=2.4 Hz, 1H), 8.45-8.50 (m, 2H), 12.24 (s, 1H).

Provenance & Evidence