Ammonia → 1-(8-Quinolyl)-2,3-dimethylcyclopentadiene

HRID 896733ノート

反応式

HRID 896733 の反応式
[Li]CCCC.Br[C:7]1[CH:8]=[CH:9][CH:10]=[C:11]2[C:16]=1[N:15]=[CH:14][CH:13]=[CH:12]2.[CH3:17][C:18]1[C:19](=O)[CH2:20][CH2:21][C:22]=1[CH3:23].Cl.N>C1COCC1>[N:15]1[C:16]2[C:11](=[CH:10][CH:9]=[CH:8][C:7]=2[C:19]2[CH2:20][CH:21]=[C:22]([CH3:23])[C:18]=2[CH3:17])[CH:12]=[CH:13][CH:14]=1

参加物

7

反応物 5

HCID 222AmmoniaHCID 313Hydrochloric AcidHCID 142702-Cyclopenten-1-one, 2,3-dimethyl-HCID 1401098-BromoquinolineHCID 178418339Butyllithium

生成物 1

HCID 223521241-(8-Quinolyl)-2,3-dimethylcyclopentadiene収率 41.4%

試薬・触媒・溶媒 1

HCID 8028Tetrahydrofuran溶媒2 回

実験手順

5 ml of n-BuLi (2.5 M in hexane, 12.5 mmol) were added at −95° C. dropwise to a solution of 2.5 g of 8-bromoquinoline (12 mmol) in 120 ml of THF; this was stirred for 15 minutes, and then 1.3 g of 2,3-dimethylcyclopent-2-enone (12 mmol), dissolved in 10 ml of THF, was added. After warming to room temperature, the solution was heated for one hour in ref lux. The cooled reaction mixture was hydrolized with ice, acidified with hydrochloric acid, and then neutralized with ammonia solution. The aqueous phase was extracted with diethyl ether, and the combined organic phases were dried. Distillation at 150° C. and 0.05 mbar yielded 1.1 g of 1-(8-quinolyl)-2,3-dimethylcyclopentadiene (40%) in the form of a yellow, viscous oil.

後処理

  1. additionwas added
  2. temperaturethe solution was heated for one hour in ref lux
  3. customThe cooled reaction mixture
  4. extractionThe aqueous phase was extracted with diethyl ether
  5. customthe combined organic phases were dried
  6. distillationDistillation at 150° C.

出典と根拠

ORDレコード
ord-728aa1472fae4e23aba1481d6ec46c51
出典データセット
uspto-grants-2005_07
特許番号
US06919412B1

反応ノート

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