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Diisopropylethylamine → 4-[(4-Methyl-1-piperazinyl)methyl]-N-[4-methyl-3-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)phenyl]benzamide

HRID 468835
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HRID 468835 반응식
[NH2:1][C:2]1[CH:3]=[CH:4][C:5]([CH3:17])=[C:6]([B:8]2[O:16][C:13]([CH3:15])([CH3:14])[C:10]([CH3:12])([CH3:11])[O:9]2)[CH:7]=1.[CH3:18][N:19]1[CH2:24][CH2:23][N:22]([CH2:25][C:26]2[CH:34]=[CH:33][C:29]([C:30](O)=[O:31])=[CH:28][CH:27]=2)[CH2:21][CH2:20]1.F[P-](F)(F)(F)(F)F.N1(O[P+](N2CCCC2)(N2CCCC2)N2CCCC2)C2N=CC=CC=2N=N1.C(N(C(C)C)C(C)C)C>CN(C=O)C.O>[CH3:17][C:5]1[CH:4]=[CH:3][C:2]([NH:1][C:30](=[O:31])[C:29]2[CH:28]=[CH:27][C:26]([CH2:25][N:22]3[CH2:21][CH2:20][N:19]([CH3:18])[CH2:24][CH2:23]3)=[CH:34][CH:33]=2)=[CH:7][C:6]=1[B:8]1[O:16][C:13]([CH3:15])([CH3:14])[C:10]([CH3:11])([CH3:12])[O:9]1
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반응물 4

HCID 81531DiisopropylethylamineHCID 47697824-(4-Methyl-1-piperazinylmethyl)benzoic acidHCID 11038641((7-Azabenzotriazol-1-YL)oxy)tris(pyrrolidino)phosphonium hexafluorophosphateHCID 160860894-Methyl-3-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)aniline

생성물 1

HCID 711151684-[(4-Methyl-1-piperazinyl)methyl]-N-[4-methyl-3-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)phenyl]benzamide
수율 24%

시약·촉매·용매 2

HCID 962Water용매HCID 6228Dimethylformamide용매

실험 절차

A solution of 5-amino-2-methylphenylboronic acid pinacol ester (1.001 g, 4.294 mmol), 4-((4-methylpiperazin-1-yl)methyl)benzoic acid (1.112 g, 4.746 mmol) and (7-azabenzotriazol-1-yloxy)tripyrrolidinophosphonium hexafluorophosphate (2.446 g, 4.691 mmol) in DMF (20 mL) at ambient temperature was added ethyldiisopropylamine (0.98 mL, 5.6 mmol), the mixture stirred at room temperature for 3 d and poured into water (100 ml). The aqueous phase was washed with diethyl ether, treated with saturated aqueous sodium bicarbonate and extracted twice with ethyl acetate. The combined ethyl acetate extracts were washed with brine, dried over sodium sulfate, filtered and concentrated in vacuo. The residue was purified by flash chromatography (silica, ISCO, 10-100% ethyl acetate in heptane, and then 0-20% methanol in DCM modified with 1% ammonia) to afford the title compound as a white solid (456 mg, 24%). 1H NMR (400 MHz, CDCl3) δ 7.97 (dd, J=8.2, 2.0 Hz, 1H), 7.80 (d, J=8.1 Hz, 2H), 7.74 (s, 1H), 7.64 (d, J=2.3 Hz, 1H), 7.44 (d, J=8.1 Hz, 2H), 7.19 (d, J=8.3 Hz, 1H), 3.57 (s, 2H), 2.52 (s, 3H), 2.5 (br s, 8H), 2.31 (s, 3H), 1.35 (s, 12H). LCMS: M+H+=450.4.

후처리

  1. washThe aqueous phase was washed with diethyl ether
  2. additiontreated with saturated aqueous sodium bicarbonate
  3. extractionextracted twice with ethyl acetate
  4. washThe combined ethyl acetate extracts were washed with brine
  5. dry with materialdried over sodium sulfate
  6. filtrationfiltered
  7. concentrationconcentrated in vacuo
  8. customThe residue was purified by flash chromatography (silica, ISCO, 10-100% ethyl acetate in heptane

출처 및 근거

ORD 기록
ord-6aa7bd2c30a84fef8c210090d5df105f
출처 데이터셋
uspto-grants-2014_01
DOI
10.6084/m9.figshare.5104873.v1
특허 번호
US08623889B2

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