Lithium Hydroxide → 4-[2,2-Dimethyl-4-(5-methyl-thiophen-2-yl)-2H-benzo[g]chromen-7-yl]-benzoic acid

HRID 2288315

반응식

HRID 2288315 반응식
C([O:3][C:4](=[O:33])[C:5]1[CH:10]=[CH:9][C:8]([C:11]2[CH:12]=[CH:13][C:14]3[CH:23]=[C:22]4[C:17]([C:18]([C:26]5[S:27][C:28]([CH3:31])=[CH:29][CH:30]=5)=[CH:19][C:20]([CH3:25])([CH3:24])[O:21]4)=[CH:16][C:15]=3[CH:32]=2)=[CH:7][CH:6]=1)C.[Li+].[OH-]>CO.C1COCC1.O>[CH3:24][C:20]1([CH3:25])[CH:19]=[C:18]([C:26]2[S:27][C:28]([CH3:31])=[CH:29][CH:30]=2)[C:17]2[C:22](=[CH:23][C:14]3[CH:13]=[CH:12][C:11]([C:8]4[CH:9]=[CH:10][C:5]([C:4]([OH:33])=[O:3])=[CH:6][CH:7]=4)=[CH:32][C:15]=3[CH:16]=2)[O:21]1

참가 물질

6

반응물 2

HCID 3939Lithium HydroxideHCID 15887284Ethyl4-[2,2-dimethyl-4-(5-methyl-thien-2-yl)-benzo[1,2-g]-chrom-3-en-7-yl]benzoate2회

생성물 1

HCID 98453824-[2,2-Dimethyl-4-(5-methyl-thiophen-2-yl)-2H-benzo[g]chromen-7-yl]-benzoic acid

시약·촉매·용매 3

HCID 887Methanol용매HCID 962Water용매HCID 8028Tetrahydrofuran용매

실험 절차

To a solution of ethyl-4-[2,2-dimethyl-4-(5-methyl-thien-2-yl)-benzo[1,2-g]-chrom-3-en-7-yl]benzoate (Compound 11, 18 mg, 0.03 mmol) in methanol (0.5 mL) and THF (1 mL), was added LiOH in water (1M solution, 0.3 mL). The reaction mixture was stirred for 20 hours, the solvent was removed under reduced pressure, the residue dissolved in water (5 mL), washed with ether (10 mL) and the aqueous layer was acidified to PH 5. The aqueous layer was extracted with ethyl acetate (3×20 mL). The combined organic layers were washed with brine, dried, and the solvent was removed under reduced pressure to afford the title compound as a pale yellow solid.

후처리

  1. customthe solvent was removed under reduced pressure
  2. dissolutionthe residue dissolved in water (5 mL)
  3. washwashed with ether (10 mL)
  4. extractionThe aqueous layer was extracted with ethyl acetate (3×20 mL)
  5. washThe combined organic layers were washed with brine
  6. customdried
  7. customthe solvent was removed under reduced pressure

출처 및 근거

ORD 기록
ord-ad41243b5cfb452aaa8cf97d3786b542
출처 데이터셋
uspto-grants-2000_07
특허 번호
US06087505

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