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Hydrochloric Acid → 6-chloro-7-(2-chloro-4,5-dimethylphenoxy)-2-(trifluoromethyl)-2H-chromene-3-carboxylic acid

HRID 855006
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HRID 855006 반응식
[Cl:1][C:2]1[CH:3]=[C:4]2[C:9](=[CH:10][C:11]=1[O:12][C:13]1[CH:18]=[C:17]([CH3:19])[C:16]([CH3:20])=[CH:15][C:14]=1[Cl:21])[O:8][CH:7]([C:22]([F:25])([F:24])[F:23])[C:6]([C:26]([O:28]CC)=[O:27])=[CH:5]2.O.[OH-].[Li+].[Al].Cl>C(OCC)C.C1COCC1.CO.O>[Cl:1][C:2]1[CH:3]=[C:4]2[C:9](=[CH:10][C:11]=1[O:12][C:13]1[CH:18]=[C:17]([CH3:19])[C:16]([CH3:20])=[CH:15][C:14]=1[Cl:21])[O:8][CH:7]([C:22]([F:24])([F:25])[F:23])[C:6]([C:26]([OH:28])=[O:27])=[CH:5]2
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참가 물질

9

반응물 4

HCID 313Hydrochloric AcidHCID 168937Lithium hydroxide, monohydrateHCID 5359268AluminumHCID 69518202ethyl 6-chloro-7-(2-chloro-4,5-dimethylphenoxy)-2-(trifluoromethyl)-2H-chromene-3-carboxylate

생성물 1

HCID 114873096-chloro-7-(2-chloro-4,5-dimethylphenoxy)-2-(trifluoromethyl)-2H-chromene-3-carboxylic acid수율 34.6%

시약·촉매·용매 4

HCID 887Methanol용매HCID 962Water용매HCID 3283Diethyl Ether용매HCID 8028Tetrahydrofuran용매

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온도
100 °C

실험 절차

To the concd product of step 1 in a suitable vial was added 400 mg (mmole) of lithium hydroxide monohydrate, 1 mL of water, 2 mL of methanol and 7 mL of THF. The vial was capped, in an aluminum heating block and the block heated to 100° C. for 30 min. After allowing the vial to cool to rt, the mixture was treated with 5 mL of 1N HCl and 2 mL of diethyl ether. The organic layer was removed and the aqueous layer extracted two times with diethyl ether. Combined organic extracts were concd by evaporation of solvent under a stream of N2 followed by conc in vacuo to afford 150 mg (34.6%) of a yellow solid: 1H NMR (CDCl3/300 MHz) 2.26 (s, 3H), 5.64 (q, 1H, J=6.8 Hz), 6.27 (s, 1H), 6.94 (s, 1H), 7.26 (s, 1H), 7.3H (s, 1H), 11.28 (hs, 1H); MS (ES−) 431 (M−1, 100); HRMS (ES−) m/z calcd for (M−H; C19H12Cl2F3O4) 431.0059, found 431.0048.

후처리

  1. temperatureto cool to rt
  2. customThe organic layer was removed
  3. extractionthe aqueous layer extracted two times with diethyl ether
  4. customCombined organic extracts were concd by evaporation of solvent under a stream of N2

출처 및 근거

ORD 기록
ord-f034ea96a5b345dea9a765ca46c4cf98
출처 데이터셋
uspto-grants-2007_08
DOI
10.6084/m9.figshare.5104873.v1
특허 번호
US07259266B2

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