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Tri-o-tolylphosphine → (E)-3-(3,3-Dimethyl-2,3-dihydro-1H-pyrido[2,3-e][1,4]diazepin-7-yl)-N-methyl-N-(3-methylbenzofuran-2-ylmethyl)acrylamide

HRID 340822
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HRID 340822 반응식
Br[C:2]1[CH:14]=[N:13][C:5]2[NH:6][CH2:7][C:8]([CH3:12])([CH3:11])[N:9]=[CH:10][C:4]=2[CH:3]=1.[CH3:15][N:16]([CH2:21][C:22]1[O:23][C:24]2[CH:31]=[CH:30][CH:29]=[CH:28][C:25]=2[C:26]=1[CH3:27])[C:17](=[O:20])[CH:18]=[CH2:19].C(N(C(C)C)C(C)C)C.CC1C=CC=CC=1P(C1C=CC=CC=1C)C1C=CC=CC=1C>C(#N)CC.CN(C=O)C.CCOC(C)=O.CC([O-])=O.CC([O-])=O.[Pd+2]>[CH3:11][C:8]1([CH3:12])[CH2:7][NH:6][C:5]2[N:13]=[CH:14][C:2](/[CH:19]=[CH:18]/[C:17]([N:16]([CH3:15])[CH2:21][C:22]3[O:23][C:24]4[CH:31]=[CH:30][CH:29]=[CH:28][C:25]=4[C:26]=3[CH3:27])=[O:20])=[CH:3][C:4]=2[CH:10]=[N:9]1
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참가 물질

9

반응물 4

HCID 80271Tri-o-tolylphosphineHCID 81531DiisopropylethylamineHCID 57742103N-methyl-N-(3-methylbenzofuran-2-ylmethyl)acrylamideHCID 593328417-Bromo-3,3-dimethyl-2,3-dihydro-1H-pyrido[2,3-e][1,4]diazepine

생성물 1

HCID 59332851(E)-3-(3,3-Dimethyl-2,3-dihydro-1H-pyrido[2,3-e][1,4]diazepin-7-yl)-N-methyl-N-(3-methylbenzofuran-2-ylmethyl)acrylamide수율 21.1%

시약·촉매·용매 4

HCID 167845palladium(II) acetate촉매HCID 6228Dimethylformamide용매HCID 7854Propionitrile용매HCID 8857Ethyl Acetate용매

실험 절차

A suspension of 7-bromo-3,3-dimethyl-2,3-dihydro-1H-pyrido[2,3-e][1,4]diazepine (255 mg, 1.00 mmol) and N-methyl-N-(3-methylbenzofuran-2-ylmethyl)acrylamide (0.28 g, 1.2 mmol) in propionitrile (5.0 mL) and DMF (1.3 mL) was de-oxygenated with Ar for 10 min. The mixture was treated with (i-Pr)2EtN (0.38 mL, 2.2 mmol) and was de-oxygenated with Ar for 5 min. Pd(OAc)2 (22 mg, 0.10 mmol) and P(o-tol)3 (63 mg, 0.21 mmol) were added simultaneously, and the mixture was de-oxygenated a third time for 5 min. The mixture was heated to reflux overnight, then allowed to cool. The mixture was diluted with EtOAc (50 mL) and washed with H2O (25 mL). The organic layer was dried over Na2SO4, filtered and concentrated to an orange oil. Purification by flash column chromatography (silica gel, CH2Cl2/MeOH, 96:4) followed by trituration with Et2O gave the title compound (85 mg, 21%) as a yellow powder and as a mixture of amide rotamers: 1H NMR (300 MHz, DMSO-d6) δ8.44-8.43 (m, 1H), 8.25 (s, 1H), 8.19-8.15 (m, 1H), 8.06 (s, 1H), 7.58-7.08 (m, 6H), 4.99-4.79 (m, 2H), 3.18-2.92 (m, 5H), 2.27 (s, 3H), 1.16 (s, 6H); MS (ESI) m/e 403 (M+H)+.

후처리

  1. waitwas de-oxygenated with Ar for 5 min
  2. customfor 5 min
  3. temperatureThe mixture was heated
  4. temperatureto reflux overnight
  5. temperatureto cool
  6. washwashed with H2O (25 mL)
  7. dry with materialThe organic layer was dried over Na2SO4
  8. filtrationfiltered
  9. concentrationconcentrated to an orange oil
  10. customPurification by flash column chromatography (silica gel, CH2Cl2/MeOH, 96:4)

출처 및 근거

ORD 기록
ord-2afcea014e614d239a0018d283c1231b
출처 데이터셋
uspto-grants-2014_11
DOI
10.6084/m9.figshare.5104873.v1
특허 번호
US08895545B2

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