tert-Butanol → HCID 58072166, 화합물

반응식

[F:1][CH:2]([F:14])[O:3][C:4]1[CH:12]=[CH:11][C:7](C(O)=O)=[C:6]([F:13])[CH:5]=1.C1C=CC(P(N=[N+]=[N-])(C2C=CC=CC=2)=[O:22])=CC=1.CC[N:34]([CH2:37]C)CC.[CH3:39][C:40]([OH:43])([CH3:42])[CH3:41]>>[F:14][CH:2]([F:1])[O:3][C:4]1[CH:12]=[CH:11][C:7]([NH:34][C:37](=[O:22])[O:43][C:40]([CH3:42])([CH3:41])[CH3:39])=[C:6]([F:13])[CH:5]=1

참가 물질

반응물 4

HCID 6386tert-Butanol

HCID 8471Triethylamine

HCID 199401P,P-Diphenylphosphinic azide

HCID 201120794-(Difluoromethoxy)-2-fluorobenzoic acid

생성물 1

HCID 58072166HCID 58072166, 화합물수율 63%

실험 절차

A solution of 4-(difluoromethoxy)-2-fluorobenzoic acid (1 g, 4.85 mmol), DPPA (1.6 g, 5.83 mmol) and Et3N (0.59 g, 5.83 mmol) in 16 mL of t-BuOH was refluxed for 4 h, and then concentrated. The residue was dissolved in dichloromethane (40 mL), washed with 1M HCl aqueous solution, dried over Na2SO4, and concentrated under reduced pressure. The crude product was purified by flash column chromatography on silica gel (petroether/AcOEt=4/1) to get the title compound (850 mg, yield 63%) as a yellow solid: 1H NMR (400 MHz, CDCl3): δ ppm 1.53 (s, 9H), 6.44 (t, J=73.6 Hz, 1H), 6.89-6.92 (m, 1H), 7.24-7.27 (m, 1H), 7.37-7.41 (m, 1H).