Triethylamine → tert-Butyl-{1-[2-(3-chloro-benzo[b]thiophen-2-yl)-ethyl]-prop-2-ynyloxy}-dimethylsilane

HRID 2264640노트

반응식

HRID 2264640 반응식
[Cl:1][C:2]1[C:3]2[CH:16]=[CH:15][CH:14]=[CH:13][C:4]=2[S:5][C:6]=1[CH2:7][CH2:8][CH:9]([OH:12])[C:10]#[CH:11].[CH3:17][C:18]([Si:21](Cl)([CH3:23])[CH3:22])([CH3:20])[CH3:19].C(N(CC)CC)C.C(=O)(O)[O-].[Na+]>ClCCl.CN(C1C=CN=CC=1)C>[C:18]([Si:21]([O:12][CH:9]([CH2:8][CH2:7][C:6]1[S:5][C:4]2[CH:13]=[CH:14][CH:15]=[CH:16][C:3]=2[C:2]=1[Cl:1])[C:10]#[CH:11])([CH3:23])[CH3:22])([CH3:20])([CH3:19])[CH3:17]

참가 물질

7

반응물 4

HCID 8471TriethylamineHCID 28928tert-Butyldimethylsilyl chlorideHCID 516892Sodium BicarbonateHCID 219644275-(3-Chloro-benzo[b]thiophen-2-yl)-pent-1-yn-3-ol

생성물 1

HCID 21964439tert-Butyl-{1-[2-(3-chloro-benzo[b]thiophen-2-yl)-ethyl]-prop-2-ynyloxy}-dimethylsilane수율 73%

시약·촉매·용매 2

HCID 142844-(Dimethylamino)pyridine촉매HCID 6344Dichloromethane용매

실험 절차

A solution of alcohol 18 (2.20 g, 8.78 mmol) in dichloromethane (15 mL) was treated with DMAP (215 mg, 1.8 mmol), TBSCl (1.59 g, 10.5 mmol), and triethylamine (1.8 mL, 13.2 mmol). The reaction was stirred for 24 h and then saturated sodium bicarbonate solution (50 mL) was added. The mixture was extracted with dichloromethane (2×50 mL) and the combined dichloromethane solution dried (Na2SO4), filtered and evaporated. Purification by flash chromatography (4% ethyl acetate/hexane) gave 3.06 g (6.4 mmol, 73%) of the protected alcohol (19).

후처리

  1. extractionThe mixture was extracted with dichloromethane (2×50 mL)
  2. dry with materialthe combined dichloromethane solution dried (Na2SO4)
  3. filtrationfiltered
  4. customevaporated
  5. customPurification by flash chromatography (4% ethyl acetate/hexane)

출처 및 근거

ORD 기록
ord-873dcc0aeb15476d9d7551f6b01d72c2
출처 데이터셋
uspto-grants-2010_12
특허 번호
US07855226B2

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