1-Dimethylsulfamoyl-2-t-butyldimethylsilyl-5-imidazolecarboxaldehyde → 2-(Tert-butyl-dimethyl-silanyl)-5-{[4-(tert-butyl-dimethyl-silanyloxy)-thiochroman-6-yl]-hydroxy-methyl}-imidazole-1-sulfonic acid dimethylamide

HRID 1174694노트

반응식

HRID 1174694 반응식
Br[C:2]1[CH:3]=[C:4]2[C:9](=[CH:10][CH:11]=1)[S:8][CH2:7][CH2:6][CH:5]2[O:12][Si:13]([C:16]([CH3:19])([CH3:18])[CH3:17])([CH3:15])[CH3:14].[Li]CCCC.[CH3:25][N:26]([CH3:44])[S:27]([N:30]1[C:34]([CH:35]=[O:36])=[CH:33][N:32]=[C:31]1[Si:37]([C:40]([CH3:43])([CH3:42])[CH3:41])([CH3:39])[CH3:38])(=[O:29])=[O:28]>C1COCC1>[CH3:25][N:26]([CH3:44])[S:27]([N:30]1[C:34]([CH:35]([C:2]2[CH:3]=[C:4]3[C:9](=[CH:10][CH:11]=2)[S:8][CH2:7][CH2:6][CH:5]3[O:12][Si:13]([C:16]([CH3:19])([CH3:18])[CH3:17])([CH3:15])[CH3:14])[OH:36])=[CH:33][N:32]=[C:31]1[Si:37]([C:40]([CH3:42])([CH3:41])[CH3:43])([CH3:39])[CH3:38])(=[O:28])=[O:29]

참가 물질

5

반응물 3

HCID 99959681-Dimethylsulfamoyl-2-t-butyldimethylsilyl-5-imidazolecarboxaldehydeHCID 59749549(6-Bromo-thiochroman-4-yl-oxy)-tert-butyl-dimethyl-silaneHCID 178418339Butyllithium

생성물 1

HCID 597495632-(Tert-butyl-dimethyl-silanyl)-5-{[4-(tert-butyl-dimethyl-silanyloxy)-thiochroman-6-yl]-hydroxy-methyl}-imidazole-1-sulfonic acid dimethylamide

시약·촉매·용매 1

HCID 8028Tetrahydrofuran용매2회

실험 절차

A solution of (6-bromo-thiochroman-4-yl-oxy)-tert-butyl-dimethyl-silane (Intermediate-K3) (2.74 g, 7.64 mmol) in THF (30 mL) was treated with nBuLi (3.1 mL of a 2.5 M soln) at −78° C. for 30 m. A solution of 2-(tert-butyl-dimethyl-silanyl)-5-formyl-imidazole-1-sulfonic acid dimethylamide (see the General Method above, Intermediate K1) (2.42 g, 7.63 mmol) in THF (10 mL) was added via cannula. After 15 m, the reaction mixture was allowed to warm to rt for 16 h. The mixture was quenched with water, washed with brine and dried over Na2SO4. The solvent was removed and the residue was purified by chromatography on silica gel with 20% EtOAc:hexane to afford 2-(tert-butyl-dimethyl-silanyl)-5-{[4-(tert-butyl-dimethyl-silanyloxy)-thiochroman-6-yl]-hydroxy-methyl}-imidazole-1-sulfonic acid dimethylamide (Intermediate K4) as an oil, 4.12 g.

후처리

  1. additionwas added via cannula
  2. customThe mixture was quenched with water
  3. washwashed with brine
  4. dry with materialdried over Na2SO4
  5. customThe solvent was removed
  6. customthe residue was purified by chromatography on silica gel with 20% EtOAc

출처 및 근거

ORD 기록
ord-cc711eefe37e4304aadb54de6f1d2c25
출처 데이터셋
uspto-grants-2010_11
특허 번호
US07838545B2

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