Hydrochloric Acid → 1-[2-(4-amino-1-piperidinyl)ethyl]-7-fluoro-2(1H)-quinoxalinone dihydrochloride

HRID 656989노트

반응식

HRID 656989 반응식
[F:1][C:2]1[CH:11]=[C:10]2[C:5]([N:6]=[CH:7][C:8](=[O:28])[N:9]2[CH2:12][CH2:13][N:14]2[CH2:19][CH2:18][CH:17]([NH:20]C(=O)OC(C)(C)C)[CH2:16][CH2:15]2)=[CH:4][CH:3]=1.[ClH:29]>CO.ClCCl.O1CCOCC1>[ClH:29].[ClH:29].[NH2:20][CH:17]1[CH2:16][CH2:15][N:14]([CH2:13][CH2:12][N:9]2[C:10]3[C:5](=[CH:4][CH:3]=[C:2]([F:1])[CH:11]=3)[N:6]=[CH:7][C:8]2=[O:28])[CH2:19][CH2:18]1

참가 물질

6

반응물 2

HCID 313Hydrochloric AcidHCID 59397942tert-butyl{1-[2-(7-fluoro-2-oxoquinoxalin-1(2H)-yl)ethyl]piperidin-4-yl}carbamate

생성물 1

HCID 688175421-[2-(4-amino-1-piperidinyl)ethyl]-7-fluoro-2(1H)-quinoxalinone dihydrochloride수율 99%

시약·촉매·용매 3

HCID 887Methanol용매HCID 6344Dichloromethane용매HCID 312751,4-Dioxane용매

실험 절차

A solution of 1,1-dimethylethyl {1-[2-(7-fluoro-2-oxo-1(2H)-quinoxalinyl)ethyl]-4-piperidinyl}carbamate (8.72 g, 22.36 mmol) in methanol (90 ml) and dichloromethane (150 mL) was treated with 4 M hydrogen chloride in 1,4-dioxane (150 mL) (added in a slow stream, some exotherm and rapid precipitation observed) and stirred at room temperature for 2.5 h. The mixture was evaporated to dryness and the residue was triturated with ether. The solid was filtered off, washed with ether and dried to give the amine salt as a grey-green solid (8.06 g, 99%).

후처리

  1. additionadded in a slow stream
  2. customsome exotherm and rapid precipitation
  3. customThe mixture was evaporated to dryness
  4. customthe residue was triturated with ether
  5. filtrationThe solid was filtered off
  6. washwashed with ether
  7. customdried

출처 및 근거

ORD 기록
ord-c68060719ec646f6a90dbe073ba3f5a6
출처 데이터셋
uspto-grants-2011_12
특허 번호
US08071592B2

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