N-Methylaniline → 2-{3-[Methyl(phenyl)amino]phenyl}ethan-1-ol

HRID 63649

Reaction equation

Br[C:2]1[CH:7]=[CH:6][CH:5]=[C:4]([CH2:8][CH2:9][O:10][Si](C(C)(C)C)(C)C)[CH:3]=1.[CH3:18][NH:19][C:20]1[CH:25]=[CH:24][CH:23]=[CH:22][CH:21]=1.CC1(C)C2C(=C(P(C3C=CC=CC=3)C3C=CC=CC=3)C=CC=2)OC2C(P(C3C=CC=CC=3)C3C=CC=CC=3)=CC=CC1=2.CC([O-])(C)C.[Na+]>C1(C)C=CC=CC=1.CCOC(C)=O.C1C=CC(/C=C/C(/C=C/C2C=CC=CC=2)=O)=CC=1.C1C=CC(/C=C/C(/C=C/C2C=CC=CC=2)=O)=CC=1.C1C=CC(/C=C/C(/C=C/C2C=CC=CC=2)=O)=CC=1.[Pd].[Pd]>[CH3:18][N:19]([C:20]1[CH:25]=[CH:24][CH:23]=[CH:22][CH:21]=1)[C:2]1[CH:3]=[C:4]([CH2:8][CH2:9][OH:10])[CH:5]=[CH:6][CH:7]=1

Participants

Conditions

Temperature: 100 °C

Procedure

1-Bromo-3-[2-(tert-butyldimethylsilyloxy)ethyl]benzene (2.5 g, 7.96 mmol), N-methylaniline (1.02 g, 9.55 mmol), Pd2dba3 (364 mg, 0.4 mmol), Xantphos (691 mg, 1.19 mmol) and NaOtBu (727 mg, 9.55 mmol) were combined in toluene (12 mL), and the reaction was heated at 100° C. in the microwave for 90 min. The reaction was diluted with EtOAc, washed with brine, dried (MgSO4), and concentrated. The residue was stirred in 70% TFA/DCM (10 mL) for 2 h. The solution was concentrated and purified by silica gel chromatography (30% to 100% EtOAc/hexanes) to give 1.3 g (72%) of the title compound as a clear oil. 1H NMR (400 MHz, CDCl3): δ 1.53 (1H, br s), 2.81 (2H, t, J=6.5 Hz), 3.31 (3H, s), 3.83 (2H, t, J=6.5 Hz), 6.81 (1H, d, J=7.4 Hz), 6.86-6.89 (2H, m), 6.97 (1H, t, J=7.3 Hz), 7.04 (d, 2H, J=7.8 Hz), 7.18-7.29 (3H, m). [M+H] Calc'd for C15H17NO, 228. Found, 228.

Workup

washwashed with brine
dry with materialdried (MgSO4)
concentrationconcentrated
concentrationThe solution was concentrated
custompurified by silica gel chromatography (30% to 100% EtOAc/hexanes)

Sources & evidence

ORD record: ord-0c44de5a5f734455a4e8bdfdcda1d458
Source dataset: uspto-grants-2016_09
DOI: 10.6084/m9.figshare.5104873.v1
Patent number: US09447046B2

Linked notes

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