Thiazole → Ethyl (E)-4-[2-(5,5-dimethyl-8-(thiazol-2-yl)-5,6-dihydronaphthalen-2-yl)ethenyl]-benzoate

HRID 992110

반응식

HRID 992110 반응식
[S:1]1[CH:5]=[CH:4][N:3]=[CH:2]1.C([Li])CCC.[CH3:11][C:12]1([CH3:43])[CH2:21][CH:20]=[C:19](OS(C(F)(F)F)(=O)=O)[C:18]2[CH:17]=[C:16](/[CH:30]=[CH:31]/[C:32]3[CH:42]=[CH:41][C:35]([C:36]([O:38][CH2:39][CH3:40])=[O:37])=[CH:34][CH:33]=3)[CH:15]=[CH:14][C:13]1=2.[NH4+].[Cl-]>C1COCC1.[Cl-].[Zn+2].[Cl-].C1C=CC([P]([Pd]([P](C2C=CC=CC=2)(C2C=CC=CC=2)C2C=CC=CC=2)([P](C2C=CC=CC=2)(C2C=CC=CC=2)C2C=CC=CC=2)[P](C2C=CC=CC=2)(C2C=CC=CC=2)C2C=CC=CC=2)(C2C=CC=CC=2)C2C=CC=CC=2)=CC=1>[CH3:43][C:12]1([CH3:11])[CH2:21][CH:20]=[C:19]([C:2]2[S:1][CH:5]=[CH:4][N:3]=2)[C:18]2[CH:17]=[C:16](/[CH:30]=[CH:31]/[C:32]3[CH:33]=[CH:34][C:35]([C:36]([O:38][CH2:39][CH3:40])=[O:37])=[CH:41][CH:42]=3)[CH:15]=[CH:14][C:13]1=2

참가 물질

8

반응물 4

HCID 9256ThiazoleHCID 25517Ammonium ChlorideHCID 19695065ethyl (E)-4-[2-(5,5-dimethyl-8-(trifluoromethylsulfonyl)oxy-5,6-dihydronaphthalen-2-yl)ethenyl]benzoateHCID 178418339Butyllithium

생성물 1

HCID 15887382Ethyl (E)-4-[2-(5,5-dimethyl-8-(thiazol-2-yl)-5,6-dihydronaphthalen-2-yl)ethenyl]-benzoate

시약·촉매·용매 3

HCID 3007855Zincchloride촉매HCID 178418397HCID 178418397, 화합물촉매HCID 8028Tetrahydrofuran용매3회

실험 절차

To a cold (−78° C.) solution of thiazole (0.38 g (0.10 Ml, 1.4 mmol) in THF (2.0 mL) was added n-butyl lithium (1.6 M solution in hexanes, 0.5 mL, 0.8 mmol) and stirred for 30 min. To this solution was added 0.176 g (1.3 mmol) of zinc chloride in 3.0 mL of tetrahydrofuran and stirred for 45 min. The resulting turbid solution was transferred, via cannula, to a flask containing a mixture of 0.17 g (0.35 mmol) of ethyl (E)-4-[2-(5,5-dimethyl-8-(trifluoromethylsulfonyl)oxy-5,6-dihydronaphthalen-2-yl)ethenyl] benzoate (Compound A9) and 15 mg (0.01 mmol) of tetrakis(triphenylphosphine)palladium(0) in 3.0 mL of tetrahydrofuran. The reaction mixture was stirred for 1 h at ambient temperature and 1.5 h at 55° C. The reaction mixture was treated with aqueous NH4Cl, and extracted with EtOAc (2×). The combined organic layer was washed with brine and dried (MgSO4). The solvent was removed under reduced pressure and the crude product was purified by flash chromatography (silica, 20% ethyl acetate in hexane) to afford the title compound as a white solid.

후처리

  1. stirringstirred for 45 min
  2. customThe resulting turbid solution was transferred, via cannula, to a flask
  3. additioncontaining
  4. stirringThe reaction mixture was stirred for 1 h at ambient temperature and 1.5 h at 55° C
  5. extractionextracted with EtOAc (2×)
  6. washThe combined organic layer was washed with brine
  7. dry with materialdried (MgSO4)
  8. customThe solvent was removed under reduced pressure
  9. customthe crude product was purified by flash chromatography (silica, 20% ethyl acetate in hexane)

출처 및 근거

ORD 기록
ord-abe253fddddb4935b145eaefd44ad14c
출처 데이터셋
uspto-grants-2002_10
특허 번호
US06465663B2

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