反应详情

A solution of (3-chlorophenyl)hydrazine hydrochloride and TEA (3 mL, 21.5 mmol) and 3-(tert-butyldiphenylsilyloxy)propanal (21.5 mmol) in toluene was stirred at rt overnight. The reaction mixture was then quenched with H2O (100 mL) and extracted with EtOAc (2×). The organic layers were dried (MgSO4) and evaporated to a reddish oil. The crude product was then purified using silica gel chromatography. The desired product was isolated as a red oil. MS(ESI) m/z: 437.1 (M-Boc)+. 1H NMR (400 MHz, CDCl3) δ 7.84-7.59 (m, 4H), 7.50-7.29 (m, 6H), 7.18-6.90 (m, 1H), 6.77 (dt, J=8.1, 2.0 Hz, 1H), 3.98-3.68 (m, 2H), 2.63-2.38 (m, 2H), 1.12-0.90 (m, 9H) ppm.

1. customThe reaction mixture was then quenched with H2O (100 mL)
2. extractionextracted with EtOAc (2×)
3. dry with materialThe organic layers were dried (MgSO4)
4. customevaporated to a reddish oil
5. customThe crude product was then purified