4-tert-Butylphenylboronic acid → 6-(4-tert-butyl-phenoxy)-3,4-dihydro-1H-isoquinoline-2,3-dicarboxylic acid 2-tert-butyl ester 3-methyl ester

HRID 1984817노트

반응식

HRID 1984817 반응식
[CH3:1][O:2][C:3]([CH:5]1[CH2:14][C:13]2[C:8](=[CH:9][CH:10]=[C:11]([OH:15])[CH:12]=2)[CH2:7][N:6]1[C:16]([O:18][C:19]([CH3:22])([CH3:21])[CH3:20])=[O:17])=[O:4].[C:23]([C:27]1[CH:32]=[CH:31][C:30](B(O)O)=[CH:29][CH:28]=1)([CH3:26])([CH3:25])[CH3:24]>C(Cl)Cl.C([O-])(=O)C.[Cu+2].C([O-])(=O)C>[CH3:1][O:2][C:3]([CH:5]1[CH2:14][C:13]2[C:8](=[CH:9][CH:10]=[C:11]([O:15][C:30]3[CH:31]=[CH:32][C:27]([C:23]([CH3:26])([CH3:25])[CH3:24])=[CH:28][CH:29]=3)[CH:12]=2)[CH2:7][N:6]1[C:16]([O:18][C:19]([CH3:22])([CH3:21])[CH3:20])=[O:17])=[O:4]

참가 물질

5

반응물 2

HCID 27343204-tert-Butylphenylboronic acidHCID 577645552-tert-Butyl 3-methyl 6-hydroxy-3,4-dihydroisoquinoline-2,3(1H)-dicarboxylate

생성물 1

HCID 671180436-(4-tert-butyl-phenoxy)-3,4-dihydro-1H-isoquinoline-2,3-dicarboxylic acid 2-tert-butyl ester 3-methyl ester수율 49.2%

시약·촉매·용매 2

HCID 8895Cupric acetate촉매HCID 6344Dichloromethane용매

실험 절차

6-Hydroxy-3,4-dihydro-1H-isoquinoline-2,3-dicarboxylic acid 2-tert-butyl ester 3-methyl ester (0.5 g, 1.62 mmol) in DCM (15 mL) was treated with copper acetate (0.59 g, 3.3 mmol), 4-tert-butylphenylboronic acid (0.87 g, 4.8 mmol), and TEA (1.0 mL, 7.9 mmol) by the general procedure G. The crude product was purified by flash column chromatography on silica gel using Hexanes:EtOAc (70:30) to give 0.35 g of 6-(4-tert-butyl-phenoxy)-3,4-dihydro-1H-isoquinoline-2,3-dicarboxylic acid 2-tert-butyl ester 3-methyl ester which was deprotected using general procedure N to give 6-(4-tert-butyl-phenoxy)-1,2,3,4-tetrahydro-isoquinoline-(3S)-carboxylic acid methyl ester hydrochloride salt (0.27 g).

후처리

  1. customThe crude product was purified by flash column chromatography on silica gel

출처 및 근거

ORD 기록
ord-1c8da13226994f1c917c23e88313c587
출처 데이터셋
uspto-grants-2009_06
특허 번호
US07544699B2

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