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Diethyl Ether → HCID 70492662、化合物

HRID 223523
ノート
印刷プレビュー

反応式

HRID 223523 の反応式
[Cl-:1].[CH3:2][P+](C1C=CC=CC=1)(C1C=CC=CC=1)C1C=CC=CC=1.C(OCC)C.C([Li])CCC.[CH:32]([C:34]1[C:39]([O:40]C(=O)C)=[C:38]([CH2:44][O:45]C(=O)C)[C:37]([CH2:49][O:50]C(=O)C)=[CH:36][N:35]=1)=O>CCCCCC>[ClH:1].[CH:32]([C:34]1[C:39]([OH:40])=[C:38]([CH2:44][OH:45])[C:37]([CH2:49][OH:50])=[CH:36][N:35]=1)=[CH2:2]
参加物反応条件実験手順後処理出典と根拠反応ノート

参加物

6

反応物 4

HCID 3283Diethyl Ether2 回HCID 9879809Methyltriphenylphosphonium chlorideHCID 20263932HCID 20263932、化合物HCID 178418339Butyllithium

生成物 1

HCID 70492662HCID 70492662、化合物

試薬・触媒・溶媒 1

HCID 8058Hexane溶媒

反応条件

温度
0 °C

実験手順

A 2 liter flask is charged with one equivalent of methyl triphenylphosphonium chloride and 600 ml. of anhydrous diethyl ether. This solution is cooled to 0° C. and one equivalent of n-butyllithium in hexane is introduced over a thirty minute period under nitrogen. When addition is complete, the solution is aged an additional 30 minutes at 0°-5° C. Then a solution of one equivalent of 2-formyl-3-acetoxy-4,5-diacetoxymethyl pyridine in 250 ml. of anhydrous ether is added dropwise with stirring over a one hour period. The reaction mixture is then aged 16 hours at room temperature, and is then cooled to 0° C. and filtered. The filtrate is concentrated to dryness under reduced pressure and treated with a mixture of 500 ml. of 2.5 N hydrochloric acid and 300 ml. of ethyl acetate. After shaking well, the organic phase is separated and discarded. The aqueous phase is extracted with 2 more 300 ml. portions of ethyl acetate and these too are discarded. The aqueous phase is then refluxed with stirring under nitrogen for 3 hours and after cooling is poured onto excess aqueous sodium bicarbonate. The crude, solid, free base is isolated by filtration and air dried. This crude solid is taken up into 300 ml. dry tetrahydrofuran and saturated with dry hydrogen chloride at 0° C. Then 300 ml. dry diethyl ether is introduced and the desired hydrochloride crystallized. It is isolated by filtration and dried in vacuo.

後処理

  1. additionWhen addition
  2. waitThe reaction mixture is then aged 16 hours at room temperature
  3. temperatureis then cooled to 0° C.
  4. filtrationfiltered
  5. concentrationThe filtrate is concentrated to dryness under reduced pressure
  6. additiontreated with a mixture of 500 ml
  7. stirringAfter shaking well
  8. customthe organic phase is separated
  9. extractionThe aqueous phase is extracted with 2 more 300 ml
  10. temperatureThe aqueous phase is then refluxed
  11. stirringwith stirring under nitrogen for 3 hours
  12. temperatureafter cooling
  13. additionis poured onto excess aqueous sodium bicarbonate
  14. customThe crude, solid, free base is isolated by filtration and air
  15. customdried
  16. customat 0° C
  17. additiondry diethyl ether is introduced
  18. customthe desired hydrochloride crystallized
  19. customIt is isolated by filtration
  20. customdried in vacuo

出典と根拠

ORDレコード
ord-fd7818957e634d0497c260adb5e00bee
出典データセット
uspto-grants-1982_10
DOI
10.6084/m9.figshare.5104873.v1
特許番号
US04355034

反応ノート

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