2-Bromoethanol → 2-{[3-(4,4,5,5-Tetramethyl-1,3,2-dioxaborolan-2-yl)phenyl]amino}ethanol

反応式

[CH3:1][C:2]1([CH3:16])[C:6]([CH3:8])([CH3:7])[O:5][B:4]([C:9]2[CH:10]=[C:11]([CH:13]=[CH:14][CH:15]=2)[NH2:12])[O:3]1.Br[CH2:18][CH2:19][OH:20].C(N(CC)C(C)C)(C)C>C1(C)C=CC=CC=1>[CH3:8][C:6]1([CH3:7])[C:2]([CH3:16])([CH3:1])[O:3][B:4]([C:9]2[CH:10]=[C:11]([NH:12][CH2:18][CH2:19][OH:20])[CH:13]=[CH:14][CH:15]=2)[O:5]1

参加物

実験手順

A mixture of 3-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)aniline (219 mg, 1.00 mmol), 2-bromoethanol (82.7 μL, 1.10 mmol) and N,N-diisopropylethylamine (261 μL, 1.50 mmol) in toluene (2 mL) was refluxed for 22 hours. After cooling to room temperature, the mixture was concentrated. The residue was purified by silica gel column chromatography (EtOAc/hexane=2:1→1:1) to afford desired product (76.3 mg, 29.0%) as colorless oil.