4-Bromobenzaldehyde → Phenylmethyl (2S)-4-[(4-bromophenyl)methyl]-2-methyl-1-piperazine Carboxylate

HRID 43340

反応式

HRID 43340 の反応式
[Br:1][C:2]1[CH:9]=[CH:8][C:5]([CH:6]=O)=[CH:4][CH:3]=1.[CH3:10][C@H:11]1[CH2:16][NH:15][CH2:14][CH2:13][N:12]1[C:17]([O:19][CH2:20][C:21]1[CH:26]=[CH:25][CH:24]=[CH:23][CH:22]=1)=[O:18].C(O[BH-](OC(=O)C)OC(=O)C)(=O)C.[Na+].C([O-])(O)=O.[Na+]>ClCCCl>[Br:1][C:2]1[CH:9]=[CH:8][C:5]([CH2:6][N:15]2[CH2:14][CH2:13][N:12]([C:17]([O:19][CH2:20][C:21]3[CH:26]=[CH:25][CH:24]=[CH:23][CH:22]=3)=[O:18])[C@@H:11]([CH3:10])[CH2:16]2)=[CH:4][CH:3]=1

参加物

6

反応物 4

HCID 707414-BromobenzaldehydeHCID 516892Sodium BicarbonateHCID 5049666Sodium triacetoxyborohydrideHCID 40425199Benzyl (2S)-2-methylpiperazine-1-carboxylate

生成物 1

HCID 25224210Phenylmethyl (2S)-4-[(4-bromophenyl)methyl]-2-methyl-1-piperazine Carboxylate収率 84.2%

試薬・触媒・溶媒 1

HCID 111,2-Dichloroethane溶媒

実験手順

A mixture of 4-bromobenzaldehyde (1.19 g, 6.42 mmol), phenylmethyl (2S)-2-methyl-1-piperazinecarboxylate (1.505 g, 6.42 mmol) and sodium triacetoxyborohydride (2.04 g, 9.63 mmol) in 1,2-DCE (15 ml) was stirred at room temperature overnight. Saturated aq. NaHCO3 solution was added and the mixture stirred for 30 mins. Product was extracted and the extracts dried (Na2SO4). Chromatography (0-30% EtOAc in pentane) gave the title compound (2.18 g). MS (ES): MH+ 403/405.

後処理

  1. stirringthe mixture stirred for 30 mins
  2. extractionProduct was extracted
  3. dry with materialthe extracts dried (Na2SO4)

出典と根拠

ORDレコード
ord-d3f1cc6cc426466f9662703f3e0ae627
出典データセット
uspto-grants-2013_09
特許番号
US08536182B2

関連ノート

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