Dimethylformamide → Ethyl 4-[2-[1-(6-fluoro-3-pyridazinyl)-4-piperidinyl]ethoxy]benzoate

HRID 484511ノート

反応式

HRID 484511 の反応式
F[N:2]1[CH:7]=[CH:6][CH:5]=[C:4]([F:8])[NH:3]1.C(O)(=O)CCC(O)=O.[NH:17]1[CH2:22][CH2:21][CH:20]([CH2:23][CH2:24][O:25][C:26]2[CH:36]=[CH:35][C:29]([C:30]([O:32][CH2:33][CH3:34])=[O:31])=[CH:28][CH:27]=2)[CH2:19][CH2:18]1.C(=O)([O-])[O-].[Na+].[Na+].CN(C)C=O>O>[F:8][C:4]1[N:3]=[N:2][C:7]([N:17]2[CH2:18][CH2:19][CH:20]([CH2:23][CH2:24][O:25][C:26]3[CH:27]=[CH:28][C:29]([C:30]([O:32][CH2:33][CH3:34])=[O:31])=[CH:35][CH:36]=3)[CH2:21][CH2:22]2)=[CH:6][CH:5]=1

参加物

6

反応物 4

HCID 6228DimethylformamideHCID 10340Sodium CarbonateHCID 197482732,6-DifluoropyridazineHCID 23056112Ethyl 4-[2-(4-piperidinyl)ethoxy]benzoate butanedioate

生成物 1

HCID 14989295Ethyl 4-[2-[1-(6-fluoro-3-pyridazinyl)-4-piperidinyl]ethoxy]benzoate収率 64.3%

試薬・触媒・溶媒 1

HCID 962Water溶媒

実験手順

A mixture 1.2 parts of 2,6-difluoropyridazine, 4 parts of ethyl 4-[2-(4-piperidinyl)ethoxy]benzoate butanedioate(1:1), 5.3 parts of sodium carbonate and 141 parts of N,N-dimethylformamide was stirred for 48 hours at 60° C. After cooling, the reaction mixture was poured into water. The precipitated product was filtered off, washed with water and dissolved in trichloromethane. The organic layer was dried, filtered and evaporated. The residue was crystallized from 2-propanol. The product was filtered off and dried, yielding 2.4 parts (64.3%) of ethyl 4-[2-[1-(6-fluoro-3-pyridazinyl)-4-piperidinyl]ethoxy]benzoate; mp. 131.9° C. (comp. 73).

後処理

  1. temperatureAfter cooling
  2. filtrationThe precipitated product was filtered off
  3. washwashed with water
  4. dissolutiondissolved in trichloromethane
  5. customThe organic layer was dried
  6. filtrationfiltered
  7. customevaporated
  8. customThe residue was crystallized from 2-propanol
  9. filtrationThe product was filtered off
  10. customdried

出典と根拠

ORDレコード
ord-f656ffe6358e40279ae012832786cd0c
出典データセット
uspto-grants-1993_07
特許番号
US05231184

反応ノート

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