Cyclododecanemethanol → Cyclododecanecarboxaldehyde

HRID 37298

反応式

HRID 37298 の反応式
[CH:1]1([CH2:13][OH:14])[CH2:12][CH2:11][CH2:10][CH2:9][CH2:8][CH2:7][CH2:6][CH2:5][CH2:4][CH2:3][CH2:2]1.CC1(C)N([O])C(C)(C)CCC1.[Br-].[Na+].Cl[O-].[Na+].C(=O)(O)[O-].[Na+]>C(Cl)Cl.O>[CH:1]1([CH:13]=[O:14])[CH2:12][CH2:11][CH2:10][CH2:9][CH2:8][CH2:7][CH2:6][CH2:5][CH2:4][CH2:3][CH2:2]1

参加物

8

反応物 5

HCID 74686CyclododecanemethanolHCID 253881Sodium BromideHCID 516892Sodium BicarbonateHCID 2724126TempoHCID 23665760Sodium Hypochlorite

生成物 1

HCID 78737Cyclododecanecarboxaldehyde収率 96.1%

試薬・触媒・溶媒 2

HCID 962Water溶媒HCID 6344Dichloromethane溶媒2 回

実験手順

To a solution of 9.92 g (50 mmol) of cyclododecane methanol in 100 ml of methylene chloride under a nitrogen atmosphere is added 50 mg of 2,2,6,6-tetramethyl-1-piperidinyloxy, free radical (TEMPO) and 510 mg (5 mmol) of sodium bromide in 5 ml of water. The solution is cooled to 10°-15° C. and a solution of 100 ml of 5.25% aqueous sodium hypochlorite and 2.0 g of sodium bicarbonate is added over 1 hour. The reaction mixture is allowed to warm to room temperature and after 1 hour is diluted with methylene chloride. The organic phase is washed with aqueous sodium thiosulfate, aqueous bicarbonate and water. The methylene chloride layer is dried over magnesium sulfate, filtered and evaporated in vacuo to give 9.43 g of crude title compound as an oil: IR (film) 1723 cm-1 ; NMR (CDCl3)) δ 1.34 (bs, 18H), 1.41 (m, 4H), 1.54 (m, 2H), 1.65 (m, 2H), 2.40 (m, 1H), 9.64 (d, 1H, J=1.6 Hz) M+ (EI) 196.

後処理

  1. temperatureThe solution is cooled to 10°-15° C.
  2. washThe organic phase is washed with aqueous sodium thiosulfate, aqueous bicarbonate and water
  3. dry with materialThe methylene chloride layer is dried over magnesium sulfate
  4. filtrationfiltered
  5. customevaporated in vacuo

出典と根拠

ORDレコード
ord-38da7748ad104fcca20b5b9611834741
出典データセット
uspto-grants-1995_05
特許番号
US05420153

関連ノート

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