反应详情

To a solution of 3-(2-((1-benzyl-1H-1,2,3-triazol-5-yl)amino)-5-chlorobenzylidene)cyclobutanecarboxylic acid 7 g (75 mg, 0.19 mmol) and dibromozinc (17.1 mg, 0.076 mmol) in EtOAc (2 mL) and MeOH (2 mL) was added 10% Pd on C [wet Degussa type] (40 mg, 0.038 mmol). The reaction was then flushed with hydrogen via vacuum/hydrogen cycles (3×) and the mixture stirred under a hydrogen atmosphere for 2 h at room temperature. Additional 10% Pd on C [wet Degussa type] (40 mg, 0.038 mmol) was added and stirred under hydrogen for a further 1 h. Acetic acid (23 mg, 21.60 μL, 0.38 mmol) was then added and mixture stirred under hydrogen overnight. Additional acetic acid (22 mg, 21.60 μL, 0.38 mmol) was added and stirred under hydrogen atmosphere again overnight. The reaction mixture was then filtered through celite washing through with methanol. The filtrate was concentrated and the material purified by FractionLynx to afford the title compound I-28 as a white solid (1.5 TFA salt) (4.0 mg, 3.9% yield). 1H NMR (500 MHz, d6-DMSO) δ 7.78 (1H, brs), 7.59 (1H, brs), 7.46 (1H, brs), 7.10-7.12 (1H, m), 7.06 (1H, d), 2.87-2.94 (1H, m), 2.72 (2H, d), 2.50-2.55 (1H, masked signal), 2.18-2.25 (2H, m), 1.84-1.90 (2H, m). MS m/z: 307.1 (M+H)+.

1. customThe reaction was then flushed with hydrogen via vacuum/hydrogen cycles (3×)
2. additionAdditional 10% Pd on C [wet Degussa type] (40 mg, 0.038 mmol) was added
3. stirringstirred under hydrogen for a further 1 h
4. stirringmixture stirred under hydrogen overnight
5. stirringstirred under hydrogen atmosphere again overnight
6. filtrationThe reaction mixture was then filtered through celite
7. washwashing through with methanol
8. concentrationThe filtrate was concentrated
9. customthe material purified by FractionLynx