Water → tert-butyl 8-ethenyl-2-methyl-2,3-dihydrothieno[2,3-f][1,4]oxazepine-4(5H)-carboxylate

HRID 1404978노트

반응식

HRID 1404978 반응식
Br[C:2]1[C:11]2[O:10][CH:9]([CH3:12])[CH2:8][N:7]([C:13]([O:15][C:16]([CH3:19])([CH3:18])[CH3:17])=[O:14])[CH2:6][C:5]=2[S:4][CH:3]=1.[CH:20](B1OC(C)(C)C(C)(C)O1)=[CH2:21].C(=O)([O-])[O-].[K+].[K+].O>COCCOC.O.Cl[Pd](Cl)([P](C1C=CC=CC=1)(C1C=CC=CC=1)C1C=CC=CC=1)[P](C1C=CC=CC=1)(C1C=CC=CC=1)C1C=CC=CC=1>[CH:20]([C:2]1[C:11]2[O:10][CH:9]([CH3:12])[CH2:8][N:7]([C:13]([O:15][C:16]([CH3:19])([CH3:18])[CH3:17])=[O:14])[CH2:6][C:5]=2[S:4][CH:3]=1)=[CH2:21]

참가 물질

7

반응물 4

HCID 962WaterHCID 11430Potassium CarbonateHCID 52330122-Ethenyl-4,4,5,5-tetramethyl-1,3,2-dioxaborolaneHCID 67958981tert-butyl 8-bromo-2-methyl-2,3-dihydrothieno[2,3-f][1,4]oxazepine-4(5H)-carboxylate

생성물 1

HCID 67958935tert-butyl 8-ethenyl-2-methyl-2,3-dihydrothieno[2,3-f][1,4]oxazepine-4(5H)-carboxylate수율 68%

시약·촉매·용매 2

HCID 178418476HCID 178418476, 화합물촉매HCID 18180031Water 1,2-dimethoxyethane용매

실험 절차

A mixed solution of tert-butyl 8-bromo-2-methyl-2,3-dihydrothieno[2,3-f][1,4]oxazepine-4(5H)-carboxylate (418 mg) obtained in Example 6, steps 1-6, vinylboronic acid pinacol ester (0.221 mL), dichlorobis(triphenylphosphine)palladium (42 mg) and potassium carbonate (498 mg) in DME-water (1:1, 10 ml,) was stirred at 85° C. for 1.5 hr under a nitrogen stream. The reaction solution was cooled to room temperature, water was added, and the mixture was extracted with ethyl acetate. The extract was washed with water and saturated brine, and dried over magnesium sulfate, and the solvent was evaporated under reduced pressure. The residue was purified by silica gel column chromatography (solvent gradient; 0→10% ethyl acetate/hexane) to give the title compound (239 mg, 68%) as a colorless oil.

후처리

  1. extractionthe mixture was extracted with ethyl acetate
  2. washThe extract was washed with water and saturated brine
  3. dry with materialdried over magnesium sulfate
  4. customthe solvent was evaporated under reduced pressure
  5. customThe residue was purified by silica gel column chromatography (solvent gradient; 0→10% ethyl acetate/hexane)

출처 및 근거

ORD 기록
ord-9bf29a003d3c4e07a2db9bf012461a25
출처 데이터셋
uspto-grants-2014_12
특허 번호
US08916549B2

반응 노트

불러오는 중…