Ethylene Glycol → 1-(Pyrid-3-yl)-2-(2-bromophenyl)-ethanediol

HRID 1613639ノート

反応式

HRID 1613639 の反応式
[N:1]1[CH:6]=[CH:5][CH:4]=[C:3]([C:7](=[O:17])[CH:8]([C:10]2[CH:15]=[CH:14][CH:13]=[CH:12][C:11]=2[Br:16])O)[CH:2]=1.[BH4-].[Na+].Cl.C(O)C[OH:23]>CO>[N:1]1[CH:6]=[CH:5][CH:4]=[C:3]([C:7]([OH:17])([OH:23])[CH2:8][C:10]2[CH:15]=[CH:14][CH:13]=[CH:12][C:11]=2[Br:16])[CH:2]=1

参加物

6

反応物 4

HCID 174Ethylene GlycolHCID 313Hydrochloric AcidHCID 4311764Sodium borohydrideHCID 197741961-(Pyrid-3-yl)-2-(2-bromophenyl)-2-hydroxyethanone

生成物 1

HCID 197741971-(Pyrid-3-yl)-2-(2-bromophenyl)-ethanediol

試薬・触媒・溶媒 1

HCID 887Methanol溶媒

実験手順

20 g (0.068 mol) of 1-(pyrid-3-yl)-2-(2-bromophenyl)-2-hydroxyethanone in 300 ml of methanol were reduced with 3 g (0.079 mol) of sodium borohydride at 0° C. Stirring was carried out for a few hours at room temperature (21° C.), the pH was brought to 2 with 4N hydrochloric acid and 4 ml of ethylene glycol were added. The solution was evaporated down, after which the residue was covered with a layer of ethyl acetate and neutralized with NaHCO3 solution. The ethyl acetate phase was washed twice with water and dried over Na2SO4. After the ethyl acetate had been distilled off, the product was obtained as a white powder of melting point 115° C.

後処理

  1. waitwas carried out for a few hours at room temperature
  2. custom(21° C.)
  3. additionwere added
  4. customThe solution was evaporated down
  5. washThe ethyl acetate phase was washed twice with water
  6. dry with materialdried over Na2SO4
  7. distillationAfter the ethyl acetate had been distilled off
  8. customthe product was obtained as a white powder of melting point 115° C.

出典と根拠

ORDレコード
ord-bcdbc5e5795b45fca221e53df83d02ea
出典データセット
uspto-grants-1993_03
特許番号
US05194441

反応ノート

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