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Potassium Carbonate → Rac-4-[3-(2,2-dimethyl-[1,3]dioxolan-4-ylmethoxy)-5-methoxy-benzoylamino]-piperidine-1-carboxylic acid tert-butyl ester

HRID 502436
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HRID 502436 반응식
[C:1]([O:5][C:6]([N:8]1[CH2:13][CH2:12][CH:11]([NH:14][C:15](=[O:25])[C:16]2[CH:21]=[C:20]([O:22][CH3:23])[CH:19]=[C:18](O)[CH:17]=2)[CH2:10][CH2:9]1)=[O:7])([CH3:4])([CH3:3])[CH3:2].C(=O)([O-])[O-].[K+].[K+].C1(C)C=CC(S([O:41][CH2:42][CH:43]2[CH2:47][O:46][C:45]([CH3:49])([CH3:48])[O:44]2)(=O)=O)=CC=1>CC#N>[C:1]([O:5][C:6]([N:8]1[CH2:13][CH2:12][CH:11]([NH:14][C:15](=[O:25])[C:16]2[CH:21]=[C:20]([O:22][CH3:23])[CH:19]=[C:18]([O:41][CH2:42][CH:43]3[CH2:47][O:46][C:45]([CH3:48])([CH3:49])[O:44]3)[CH:17]=2)[CH2:10][CH2:9]1)=[O:7])([CH3:4])([CH3:3])[CH3:2]
참가 물질실험 절차후처리출처 및 근거반응 노트

참가 물질

5

반응물 3

HCID 11430Potassium CarbonateHCID 2350972,2-Dimethyl-1,3-dioxolan-4-ylmethyl p-toluenesulfonateHCID 684587374-(3-Hydroxy-5-methoxy-benzoylamino)-piperidine-1-carboxylic acid tert-butyl ester

생성물 1

HCID 68456964Rac-4-[3-(2,2-dimethyl-[1,3]dioxolan-4-ylmethoxy)-5-methoxy-benzoylamino]-piperidine-1-carboxylic acid tert-butyl ester수율 71.1%

시약·촉매·용매 1

HCID 6342
Acetonitrile
용매

실험 절차

1.60 g (4.6 mmol) of 4-(3-hydroxy-5-methoxy-benzoylamino)-piperidine-1-carboxylic acid tert-butyl ester (example 168a) was dissolved in 50 ml of MeCN at rt; 1.29 g (9.4 mmol) of anhydrous potassium carbonate was added, followed by 1.495 g (4.8 mmol) of rac-2,2-dimethyl-1,3-dioxolan-4-yl-methyl p-toluenesulfonate. The reaction mixture was stirred at reflux for 22 hours. It was then cooled down to ambient temperature and poured into crashed ice and extracted twice with EtOAc. The organic phases were washed with water and brine, dried over MgSO4, filtered and evaporated i.V. and the residue (2.11 g) was purified by chromatography (SiO2, MeCl2/MeOH) to yield 1.52 g of the title compound as a colorless amorphous solid. MS: 465.2 (MH+).

후처리

  1. temperatureat reflux for 22 hours
  2. additionpoured
  3. extractionextracted twice with EtOAc
  4. washThe organic phases were washed with water and brine
  5. dry with materialdried over MgSO4
  6. filtrationfiltered
  7. customevaporated i.V
  8. customand the residue (2.11 g) was purified by chromatography (SiO2, MeCl2/MeOH)

출처 및 근거

ORD 기록
ord-467ae3a0b4be4af581649094ab5d79a6
출처 데이터셋
uspto-grants-2010_08
DOI
10.6084/m9.figshare.5104873.v1
특허 번호
US07772253B2

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