Hydrochloric Acid → 10,12-Tricosadiynoic Acid

HRID 2106976

反応式

HRID 2106976 の反応式
[C:1]([OH:13])(=[O:12])[CH2:2][CH2:3][CH2:4][CH2:5][CH2:6][CH2:7][CH2:8][CH2:9][C:10]#[CH:11].[OH-].[K+].Cl.NO.I[C:20]#[C:21][CH2:22][CH2:23][CH2:24][CH2:25][CH2:26][CH2:27][CH2:28][CH2:29][CH2:30][CH3:31].Cl>O.C(N)C.CO>[C:1]([OH:13])(=[O:12])[CH2:2][CH2:3][CH2:4][CH2:5][CH2:6][CH2:7][CH2:8][CH2:9][C:10]#[C:11][C:20]#[C:21][CH2:22][CH2:23][CH2:24][CH2:25][CH2:26][CH2:27][CH2:28][CH2:29][CH2:30][CH3:31]

参加物

9

反応物 5

HCID 313Hydrochloric AcidHCID 14797Potassium HydroxideHCID 3103910-Undecynoic acidHCID 443297Hydroxyamine hydrochlorideHCID 136005871-Iodododec-1-yne

生成物 1

HCID 53845710,12-Tricosadiynoic Acid

試薬・触媒・溶媒 3

HCID 887Methanol溶媒HCID 962Water溶媒HCID 6341Ethylamine溶媒

実験手順

10-Undecynoic acid (21.8 g, 0.120 mol) was neutralized with a solution of 57 mL 10 percent KOH in water and hydroxylamine hydrochloride (0.380 g) was added. Then a catalyst consisting of a solution of 1.9 g cuprous chloride in 16 g 70 percent aqueous ethylamine was added. A yellow precipitate formed immediately. A solution of the crude 1-iodo-1-dodecyne in 40 mL methanol was then added dropwise with stirring. The suspension was stirred for one hour after the addition. The reaction mixture was acidified by the addition of 2.5N HCl, filtered, and the filtrate and precipitate washed with ether. The ether layers were washed with water, thiosulfate solution, water and saturated sodium chloride. After drying Na2SO4) the solvents were removed under reduced pressure. The residue was induced to crystallize by scratching under petroleum ether. The crystals of the diyne acid (26.4 g, 74%) exhibited m.p. 57°-58° after recrystallization from acetonitrile.

後処理

  1. additionwas added
  2. additionwas added
  3. customA yellow precipitate formed immediately
  4. stirringThe suspension was stirred for one hour
  5. additionafter the addition
  6. filtrationfiltered
  7. washthe filtrate and precipitate washed with ether
  8. washThe ether layers were washed with water, thiosulfate solution, water and saturated sodium chloride
  9. dry with materialAfter drying Na2SO4) the solvents
  10. customwere removed under reduced pressure
  11. customto crystallize
  12. customafter recrystallization from acetonitrile

出典と根拠

ORDレコード
ord-dea00503b4b24f5ab3f03420aaf878fd
出典データセット
uspto-grants-1990_06
特許番号
US04933114

関連ノート

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