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1,1-Dichloroethane → (R)-3-(4-benzyloxy-2,6-dichloro-benzyl)-1-(4-hydroxy-piperidin-1-yl)-pyrrolidin-2-one

HRID 1692097
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HRID 1692097 반응식
ClC(Cl)C.[NH2:5][N:6]1[CH2:11][CH2:10][CH:9]([OH:12])[CH2:8][CH2:7]1.C([C@@H]1COC(=O)N1[C:26](=[O:48])[C@H:27]([CH2:31][C:32]1[C:37]([Cl:38])=[CH:36][C:35]([O:39][CH2:40][C:41]2[CH:46]=[CH:45][CH:44]=[CH:43][CH:42]=2)=[CH:34][C:33]=1[Cl:47])[CH2:28][CH:29]=O)C1C=CC=CC=1.C(O[BH-](OC(=O)C)OC(=O)C)(=O)C.[Na+]>ClCCl>[CH2:40]([O:39][C:35]1[CH:34]=[C:33]([Cl:47])[C:32]([CH2:31][C@@H:27]2[CH2:28][CH2:29][N:5]([N:6]3[CH2:11][CH2:10][CH:9]([OH:12])[CH2:8][CH2:7]3)[C:26]2=[O:48])=[C:37]([Cl:38])[CH:36]=1)[C:41]1[CH:42]=[CH:43][CH:44]=[CH:45][CH:46]=1
참가 물질실험 절차후처리출처 및 근거반응 노트

참가 물질

6

반응물 4

HCID 63651,1-DichloroethaneHCID 5049666Sodium triacetoxyborohydrideHCID 121256451-Aminopiperidin-4-OLHCID 59515429(R)-4-((R)-benzyl-2-oxo-oxazolidin-3-yl)-3-(4-benzyloxy-2,6-dichloro-benzyl)-4-oxo-butyraldehyde

생성물 1

HCID 57672050(R)-3-(4-benzyloxy-2,6-dichloro-benzyl)-1-(4-hydroxy-piperidin-1-yl)-pyrrolidin-2-one수율 90%

시약·촉매·용매 1

HCID 6344Dichloromethane용매

실험 절차

Stir a mixture of dichloroethane (500 mL), N-amino-4-hydroxypiperidine (10.66 g, 91.88 mmol), (R)-4-((R)-4-benzyl-2-oxo-oxazolidin-3-yl)-3-(4-benzyloxy-2,6-dichloro-benzyl)-4-oxo-butyraldehyde (40.2 g, 76.57 mmol) and sodium triacetoxyborohydride (48.47 g, 229.71 mmol) at room temperature for 21 hours. Bring the reaction to 55° C. and is stir for 1 hour. Cool the reaction, dilute with dichloromethane, and wash with water. Dry the organic layer (Na2SO4), remove the solvent in vacuo to afford crude product, and purify on silica with a 100% ethyl acetate and 10% methanol in methylene chloride to afford 30 g (90%) of the titled product. MS (m/z): 449 (M+).

후처리

  1. customBring the reaction to 55° C.
  2. stirringis stir for 1 hour
  3. temperatureCool
  4. customthe reaction
  5. washwash with water
  6. dry with materialDry the organic layer (Na2SO4)
  7. customremove the solvent in vacuo
  8. customto afford crude product
  9. custompurify on silica with a 100% ethyl acetate and 10% methanol in methylene chloride

출처 및 근거

ORD 기록
ord-d2f2051e3b0547eabe33273ce1c0782b
출처 데이터셋
uspto-grants-2012_04
DOI
10.6084/m9.figshare.5104873.v1
특허 번호
US08153807B2

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