Tetrabutylammonium Fluoride → (2S,5R)-tert-butyl 5-(N-(allyloxy)-2-nitrophenylsulfonamido)-2-(hydroxymethyl)-3-methyl-5,6-dihydropyridine-1(2H)-carboxylate

HRID 627127

반응식

HRID 627127 반응식
[CH2:1]([O:4][N:5]([C@H:18]1[CH2:23][N:22]([C:24]([O:26][C:27]([CH3:30])([CH3:29])[CH3:28])=[O:25])[C@H:21]([CH2:31][O:32][Si](C(C)(C)C)(C)C)[C:20]([CH3:40])=[CH:19]1)[S:6]([C:9]1[CH:14]=[CH:13][CH:12]=[CH:11][C:10]=1[N+:15]([O-:17])=[O:16])(=[O:8])=[O:7])[CH:2]=[CH2:3].[F-].C([N+](CCCC)(CCCC)CCCC)CCC>C1COCC1>[CH2:1]([O:4][N:5]([C@H:18]1[CH2:23][N:22]([C:24]([O:26][C:27]([CH3:29])([CH3:28])[CH3:30])=[O:25])[C@H:21]([CH2:31][OH:32])[C:20]([CH3:40])=[CH:19]1)[S:6]([C:9]1[CH:14]=[CH:13][CH:12]=[CH:11][C:10]=1[N+:15]([O-:17])=[O:16])(=[O:8])=[O:7])[CH:2]=[CH2:3]

참가 물질

4

반응물 2

HCID 2724141Tetrabutylammonium FluorideHCID 89852556(2S,5R)-tert-butyl 5-(N-(allyloxy)-2-nitrophenylsulfonamido)-2-((tert-butyldimethylsilyloxy)methyl)-3-methyl-5,6-dihydropyridine-1(2H)-carboxylate2회

생성물 1

HCID 89852407(2S,5R)-tert-butyl 5-(N-(allyloxy)-2-nitrophenylsulfonamido)-2-(hydroxymethyl)-3-methyl-5,6-dihydropyridine-1(2H)-carboxylate수율 79.3%

시약·촉매·용매 1

HCID 8028Tetrahydrofuran용매2회

실험 절차

(2S,5R)-tert-butyl 5-(N-(allyloxy)-2-nitrophenylsulfonamido)-2-((tert-butyldimethylsilyloxy)methyl)-3-methyl-5,6-dihydropyridine-1(2H)-carboxylate (Intermediate 80, 7.05 g, 11.79 mmol) in THF (100 mL) was charged with nitrogen and cooled in an ice-bath. Tetrabutylammonium fluoride in THF (14.15 mL, 14.15 mmol) was added to the solution and stirred at rt. The reaction mixture was evaporated and the crude product was loaded onto silica and purified via flash chromatography (30-100% EA/Hexanes, 40 g column), to obtain the desired product (4.52 g, 79%) as a pale yellow foam.

후처리

  1. temperaturecooled in an ice-bath
  2. customThe reaction mixture was evaporated
  3. custompurified via flash chromatography (30-100% EA/Hexanes, 40 g column)

출처 및 근거

ORD 기록
ord-a9fae5c93a9a42e2882c69ddbe1f682e
출처 데이터셋
uspto-grants-2016_04
특허 번호
US09309245B2

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