Potassium Carbonate → 4-[4-(2-Chloro-4-trifluoromethylphenoxy)phenoxy]-3-methoxy-2-pentenoic acid

HRID 638480ノート

反応式

HRID 638480 の反応式
[Cl:1][C:2]1[CH:15]=[C:14]([C:16]([F:19])([F:18])[F:17])[CH:13]=[CH:12][C:3]=1[O:4][C:5]1[CH:10]=[CH:9][C:8]([OH:11])=[CH:7][CH:6]=1.Br[CH:21]([CH3:31])[C:22]([O:29][CH3:30])=[CH:23][C:24]([O:26]CC)=[O:25].C(=O)([O-])[O-].[K+].[K+]>CN(C=O)C>[Cl:1][C:2]1[CH:15]=[C:14]([C:16]([F:18])([F:17])[F:19])[CH:13]=[CH:12][C:3]=1[O:4][C:5]1[CH:6]=[CH:7][C:8]([O:11][CH:21]([CH3:31])[C:22]([O:29][CH3:30])=[CH:23][C:24]([OH:26])=[O:25])=[CH:9][CH:10]=1

参加物

5

反応物 3

HCID 11430Potassium CarbonateHCID 129406134-[2-Chloro-4-(trifluoromethyl)phenoxy]phenolHCID 53787831Ethyl 4-bromo-3-methoxypent-2-enoate

生成物 1

HCID 538603484-[4-(2-Chloro-4-trifluoromethylphenoxy)phenoxy]-3-methoxy-2-pentenoic acid

試薬・触媒・溶媒 1

HCID 6228Dimethylformamide溶媒

実験手順

A mixture of 4-(2-chloro-4-trifluoromethylphenoxy)phenol (1.16 g), ethyl 4-bromo-3-methoxy-2-pentenoate (prepared in accordance with the procedure of Example 10) (1.74 g) and potassium carbonate (0.73 g) in DMF (5 ml.) is heated at about 130° for 2 hours. Thereafter, DMF is removed. The residue is filtered and washed with methylene dichloride. The filtrate is washed, dried and evaporated to dryness. The oily residue is subjected to prep. thin layer chromatography using 20% ethylacetate/hexane to yield the ethyl ester of 4-[4-(2-chloro-4-trifluoromethylphenoxy)phenoxy]-3-methoxy-2-pentenoic acid, MS m/e 444 (M+).

後処理

  1. temperatureis heated at about 130° for 2 hours
  2. customThereafter, DMF is removed
  3. filtrationThe residue is filtered
  4. washwashed with methylene dichloride
  5. washThe filtrate is washed
  6. customdried
  7. customevaporated to dryness

出典と根拠

ORDレコード
ord-e29cc527a3634dcd964afba5199ca518
出典データセット
uspto-grants-1985_12
特許番号
US04561882

反応ノート

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