Hydrochloric Acid → beta-trimethylsilylethyl (3RS,4RS)-4-(4-fluorophenyl)-3-(4-hydroxy-naphthalen-2-ylmethoxy)-piperidine-1-carboxylate

HRID 1004945ノート

反応式

HRID 1004945 の反応式
[F:1][C:2]1[CH:7]=[CH:6][C:5]([CH:8]2[CH2:13][CH2:12][N:11]([C:14]([O:16][CH2:17][CH2:18][Si:19]([CH3:22])([CH3:21])[CH3:20])=[O:15])[CH2:10][CH:9]2[O:23][CH2:24][C:25]2[CH:34]=[C:33]([O:35]COCC[Si](C)(C)C)[C:32]3[C:27](=[CH:28][CH:29]=[CH:30][CH:31]=3)[CH:26]=2)=[CH:4][CH:3]=1.Cl>CO>[F:1][C:2]1[CH:7]=[CH:6][C:5]([CH:8]2[CH2:13][CH2:12][N:11]([C:14]([O:16][CH2:17][CH2:18][Si:19]([CH3:21])([CH3:22])[CH3:20])=[O:15])[CH2:10][CH:9]2[O:23][CH2:24][C:25]2[CH:34]=[C:33]([OH:35])[C:32]3[C:27](=[CH:28][CH:29]=[CH:30][CH:31]=3)[CH:26]=2)=[CH:4][CH:3]=1

参加物

4

反応物 2

HCID 313Hydrochloric AcidHCID 86604391beta-trimethylsilylethyl (3RS,4RS)-4-(4-fluorophenyl)-3-[4-(2-trimethylsilyl-ethoxymethoxy)-naphthalen-2-yl-methoxy]-piperidine-1-carboxylate

生成物 1

HCID 53737733beta-trimethylsilylethyl (3RS,4RS)-4-(4-fluorophenyl)-3-(4-hydroxy-naphthalen-2-ylmethoxy)-piperidine-1-carboxylate収率 80%

試薬・触媒・溶媒 1

HCID 887Methanol溶媒2 回

反応条件

温度
50 °C

実験手順

4.65 g (7.43 mmol) of β-trimethylsilylethyl (3RS,4RS)-4-(4-fluorophenyl)-3-[4-(2-trimethylsilyl-ethoxymethoxy)-naphthalen-2-ylmethoxy]-piperidin-1-carboxylate were dissolved in 40 ml of methanol, treated with 40 ml of a 2 N solution of hydrogen chloride in methanol and stirred at 50° C. for 90 minutes. Subsequently, the mixture was partitioned between methylene chloride and aqueous 5% sodium hydrogen carbonate solution, the organic phase was dried over magnesium sulphate and finally the solvent was distilled off under reduced pressure. The crude product (6.8 g) was purified by chromatography on silica gel with a 3:7 mixture of ethyl acetate and hexane. There were obtained 2.93 g (80% of theory) of β-trimethylsilylethyl (3RS,4RS)-4-(4-fluorophenyl)-3-(4-hydroxy-naphthalen-2-ylmethoxy)-piperidine-1-carboxylate as a colourless solid; MS: 496 (M+H)+.

後処理

  1. customSubsequently, the mixture was partitioned between methylene chloride and aqueous 5% sodium hydrogen carbonate solution
  2. dry with materialthe organic phase was dried over magnesium sulphate
  3. distillationfinally the solvent was distilled off under reduced pressure
  4. customThe crude product (6.8 g) was purified by chromatography on silica gel with a 3:7 mixture of ethyl acetate and hexane

出典と根拠

ORDレコード
ord-e74bc1b9c09e43629f3d9f52e71c9e98
出典データセット
uspto-grants-2000_04
特許番号
US06051712

反応ノート

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