Triethylamine → (4aR,8aR)-6-benzyl 1-tert-butyl hexahydro-1H-pyrido[3,4-b][1,4]oxazine-1,6(7H)-dicarboxylate

HRID 81119노트

반응식

HRID 81119 반응식
[N:1]1([C:11]([O:13][C:14]([CH3:17])([CH3:16])[CH3:15])=[O:12])[CH2:6][CH2:5][O:4][C@@H:3]2[CH2:7][NH:8][CH2:9][CH2:10][C@@H:2]12.Cl[C:19]([O:21][CH2:22][C:23]1[CH:28]=[CH:27][CH:26]=[CH:25][CH:24]=1)=[O:20].C(N(CC)CC)C>C(Cl)Cl>[N:1]1([C:11]([O:13][C:14]([CH3:17])([CH3:16])[CH3:15])=[O:12])[CH2:6][CH2:5][O:4][C@@H:3]2[CH2:7][N:8]([C:19]([O:21][CH2:22][C:23]3[CH:28]=[CH:27][CH:26]=[CH:25][CH:24]=3)=[O:20])[CH2:9][CH2:10][C@@H:2]12

참가 물질

5

반응물 3

HCID 8471TriethylamineHCID 10387Benzyl chloroformateHCID 86724487tert-butyl (4aR,8aR)-octahydro-1H-pyrido[3,4-b][1,4]oxazine-1-carboxylate

생성물 1

HCID 86724486(4aR,8aR)-6-benzyl 1-tert-butyl hexahydro-1H-pyrido[3,4-b][1,4]oxazine-1,6(7H)-dicarboxylate

시약·촉매·용매 1

HCID 6344Dichloromethane용매

실험 절차

To tert-butyl (4aR,8aR)-octahydro-1H-pyrido[3,4-b][1,4]oxazine-1-carboxylate (250 mg, 1.03 mmol) dissolved in DCM (2 mL) was added benzyl chloroformate (0.21 mL, 1.44 mmol). Triethylamine (0.4 mL, 2.89 mmol) was added slowly and stirred for 3 hours at room temperature. The reaction was quenched with saturated aqueous sodium bicarbonate. The aqueous layer was extracted with DCM, and the combined organic layers were dried over sodium sulfate, filtered, and concentrated to afford (4aR,8aR)-6-benzyl 1-tert-butyl hexahydro-1H-pyrido[3,4-b][1,4]oxazine-1,6(7H)-dicarboxylate. 1H NMR (500 MHz, CDCl3) δ 7.40-7.30 (m, 5H), 5.12 (s, 2H), 4.40-4.15 (m, 1H), 3.93-3.87 (m, 1H), 3.86-3.79 (m, 1H), 3.77-3.71 (m, 1H), 3.42-3.29 (m, 2H), 3.19-3.13 (m, 1H), 2.81-2.48 (m, 2H), 1.76-1.66 (m, 1H), 1.58 (s, 2H), 1.45 (s, 9H).

후처리

  1. customThe reaction was quenched with saturated aqueous sodium bicarbonate
  2. extractionThe aqueous layer was extracted with DCM
  3. dry with materialthe combined organic layers were dried over sodium sulfate
  4. filtrationfiltered
  5. concentrationconcentrated

출처 및 근거

ORD 기록
ord-9085e995acb84b99bbf1bbe1a9a5a628
출처 데이터셋
uspto-grants-2014_09
특허 번호
US08846657B2

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