1-Ethyl-3-(3'-dimethylaminopropyl)carbodiimide → (E)-3-(2,2-Dimethyl-3,4-dihydro-2H-pyrido[3,2-b][1,4]oxazin-7-yl)-N-methyl-N-(3-methylbenzofuran-2-ylmethyl)acrylamide hydrogen chloride

HRID 2097142노트

반응식

HRID 2097142 반응식
[CH3:1][NH:2][CH2:3][C:4]1[O:5][C:6]2[CH:13]=[CH:12][CH:11]=[CH:10][C:7]=2[C:8]=1[CH3:9].[ClH:14].[CH3:15][C:16]1([CH3:31])[O:21][C:20]2[CH:22]=[C:23]([CH:26]=[CH:27][C:28]([OH:30])=O)[CH:24]=[N:25][C:19]=2[NH:18][CH2:17]1.ON1C2C=CC=CC=2N=N1.C(N(C(C)C)CC)(C)C.CN(C)CCCN=C=NCC>CN(C=O)C.O>[ClH:14].[CH3:31][C:16]1([CH3:15])[O:21][C:20]2[CH:22]=[C:23](/[CH:26]=[CH:27]/[C:28]([N:2]([CH3:1])[CH2:3][C:4]3[O:5][C:6]4[CH:13]=[CH:12][CH:11]=[CH:10][C:7]=4[C:8]=3[CH3:9])=[O:30])[CH:24]=[N:25][C:19]=2[NH:18][CH2:17]1

참가 물질

8

반응물 5

HCID 159081-Ethyl-3-(3'-dimethylaminopropyl)carbodiimideHCID 757711-HydroxybenzotriazoleHCID 81531DiisopropylethylamineHCID 46785639N-methyl-1-(3-methylbenzofuran-2-yl)methanamineHCID 669677313-(2,2-dimethyl-3,4-dihydro-2H-pyrido[3,2-b][1,4]oxazin-7-yl)acrylic acid hydrochloride

생성물 1

HCID 16659990(E)-3-(2,2-Dimethyl-3,4-dihydro-2H-pyrido[3,2-b][1,4]oxazin-7-yl)-N-methyl-N-(3-methylbenzofuran-2-ylmethyl)acrylamide hydrogen chloride

시약·촉매·용매 2

HCID 962Water용매HCID 6228Dimethylformamide용매

실험 절차

To a solution of methyl-(3-methyl-benzofuran-2-ylmethyl)-amine (88 mg, 0.5 mmol) in DMF (5 mL) were added in sequential order 3-(2,2-dimethyl-3,4-dihydro-2H-pyrido[3,2-b][1,4]oxazin-7-yl)acrylic acid hydrochloride (107 mg, 0.46 mmol), 1-hydroxybenzotriazole (68 mg, 0.5 mmol), diisopropylethylamine (240 uL, 1.38 mmol), and N-(3-dimethylaminopropyl)-N′-ethylcarbodiimide (100 mg, 0.5 mmol). The mixture was stirred at room temperature overnight, cooled in an ice bath and water added with rapid stirring. The product was extracted with ethyl acetate (3×10 mL), dried with sodium sulfate, filtered and concentrated. The free base was re-solvated in methylene chloride (5 mL) and a solution of 4M HCl in dioxane (1 mL) was added to precipitate the hydrogen chloride salt as a pale yellow solid (84 mg, 43%): 1H NMR (400 MHz, DMSO-d6) δ 8.94 (1s, 1H), 8.01-8.06 (m, 2H), 7.47-7.58 (m, 3H), 7.16-7.25 (m, 3H), 4.73-4.94 (rotamers, 2s, 2H), 3.42 (s, 2H), 3.04 (s, 3H), 2.42 (s, 3H), 1.34 (s, 6H); MS (ESI) m/e 392 (C23H25N3O3+H)+.

후처리

  1. temperaturecooled in an ice bath
  2. extractionThe product was extracted with ethyl acetate (3×10 mL)
  3. dry with materialdried with sodium sulfate
  4. filtrationfiltered
  5. concentrationconcentrated
  6. additiona solution of 4M HCl in dioxane (1 mL) was added
  7. customto precipitate the hydrogen chloride salt as a pale yellow solid (84 mg, 43%)

출처 및 근거

ORD 기록
ord-2c64068dde2148b298885666418cb048
출처 데이터셋
uspto-grants-2013_05
특허 번호
US08450307B2

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