Trimethylsilylacetylene → 6-(trimethylsilyl)ethynyl-3,4-dihydro-4,4-dimethyl-naphthalen-1(2H)-one

HRID 265680

반응식

HRID 265680 반응식
Br[C:2]1[CH:3]=[C:4]2[C:9](=[CH:10][CH:11]=1)[C:8](=[O:12])[CH2:7][CH2:6][C:5]2([CH3:14])[CH3:13].[CH3:15][Si:16]([C:19]#[CH:20])([CH3:18])[CH3:17]>C(N(CC)CC)C.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>[CH3:15][Si:16]([C:19]#[C:20][C:2]1[CH:3]=[C:4]2[C:9](=[CH:10][CH:11]=1)[C:8](=[O:12])[CH2:7][CH2:6][C:5]2([CH3:14])[CH3:13])([CH3:18])[CH3:17]

참가 물질

5

반응물 2

HCID 66111TrimethylsilylacetyleneHCID 118319356-Bromo-4,4-dimethyl-3,4-dihydronaphthalen-1(2H)-one2회

생성물 1

HCID 225688166-(trimethylsilyl)ethynyl-3,4-dihydro-4,4-dimethyl-naphthalen-1(2H)-one

시약·촉매·용매 2

HCID 178418476HCID 178418476, 화합물촉매HCID 8471Triethylamine용매

실험 절차

To a solution (flushed for 15 minutes with a stream of argon) of 13.55 g (53.8 mmol) of 6-bromo-3,4-dihydro-4,4-dimethylnaphthalen-1(2H)-one (Compound H) in 280 ml of triethylamine was added 1.87 g (2.66 mmol) of bis(triphenylphosphine)palladium(II) chloride and 0.53 g (2.66 mmol) of cuprous iodide. The solution mixture was flushed with argon for 5 minutes and then 100 ml (938.7 mmol) of (trimethylsilyl)acetylene was added. The reaction mixture was sealed in a pressure tube and placed in a preheated oil bath (100° C.) for 24 hours. The reaction mixture was then filtered through Celite, washed with Et2O and the filtrate concentrated in vacuo to give crude 6-(trimethylsilyl)ethynyl-3,4-dihydro-4,4-dimethylnaphthalen-1(2H)-one. To a solution of this crude TMS-acetylenic compound in 50 ml of methanol was added 2.8 g (20.3 mmol) of K2CO3. The mixture was stirred for 8 hours at ambient temperature and then filtered. The filtrate was concentrated in vacuo, diluted with Et2O (100 ml), washed with water (10 ml), 10% HCl (10 ml) and brine (10 ml), dried over MgSO4 and concentrated in vacuo. Purification by column chromatography (silica, 10% EtOAc-hexane) yielded the title compound as a white solid.

후처리

  1. customThe solution mixture was flushed with argon for 5 minutes
  2. customThe reaction mixture was sealed in a pressure tube
  3. customplaced in a preheated oil bath
  4. filtrationThe reaction mixture was then filtered through Celite
  5. washwashed with Et2O
  6. concentrationthe filtrate concentrated in vacuo

출처 및 근거

ORD 기록
ord-1507bf70960b4479a7ea743ae2cfa25c
출처 데이터셋
uspto-grants-1997_07
특허 번호
US05648503

연결된 노트

불러오는 중…