反应详情

A microwave vial was charged with the product of Step 2 (50 mg, 0.094 mmol), MeOH (666 μl) and then NaOH (700 μl, 0.700 mmol). The mixture was irradiated in the microwave for 20 minutes at 100° C. The pH was adjusted to 3-4 with 1M HCl, then diluted with water and extracted with 10% IPA/CHCl3. The combined organics were washed with water, dried (NaSO4), filtered and concentrated to afford racemic-4-{1,2-dihydroxy-1-[5-(3-methyl-5-{[4-(trifluoromethyl)pyrimidin-2-yl]amino}phenyl)-1,3-thiazol-2-yl]ethyl}benzoic acid (33.4 mg, 0.065 mmol, 68.6% yield). MS ESI: [M+H]+ m/z 517.1. 1H NMR (500 MHz, DMSO-d6) δ 12.86 (s, 1H), 10.24 (s, 1H), 8.82 (d, J=4.8, 1H), 7.99 (s, 1H), 7.93-7.85 (m, 3H), 7.74 (d, J=8.3, 2H), 7.45 (s, 1H), 7.26 (d, J=4.8, 1H), 7.12 (s, 1H), 6.73 (s, 1H), 5.11 (t, J=5.8, 1H), 4.10 (dd, J=5.6, 11.2, 1H), 4.04-3.89 (m, 1H), 2.31 (s, 3H).

1. customThe mixture was irradiated in the microwave for 20 minutes at 100° C
2. extractionextracted with 10% IPA/CHCl3
3. washThe combined organics were washed with water
4. dry with materialdried (NaSO4)
5. filtrationfiltered
6. concentrationconcentrated