Acetic Acid → 1,1-Dimethylethyl 2-((4-(methoxycarbonyl)phenylmethylamino)methyl)-1-piperidinecarboxylate

HRID 16490

反応式

HRID 16490 の反応式
[C:1]([N:8]1[CH2:13][CH2:12][CH2:11][CH2:10][CH:9]1[CH2:14][NH2:15])([O:3][C:4]([CH3:7])([CH3:6])[CH3:5])=[O:2].[CH:16]([C:18]1[CH:27]=[CH:26][C:21]([C:22]([O:24][CH3:25])=[O:23])=[CH:20][CH:19]=1)=O.C(O)(=O)C.C(O[BH-](OC(=O)C)OC(=O)C)(=O)C.[Na+]>ClC(Cl)C.O>[CH3:25][O:24][C:22]([C:21]1[CH:26]=[CH:27][C:18]([CH2:16][NH:15][CH2:14][CH:9]2[CH2:10][CH2:11][CH2:12][CH2:13][N:8]2[C:1]([O:3][C:4]([CH3:7])([CH3:6])[CH3:5])=[O:2])=[CH:19][CH:20]=1)=[O:23]

参加物

7

反応物 4

HCID 176Acetic AcidHCID 15294Methyl 4-FormylbenzoateHCID 2756482tert-Butyl 2-(aminomethyl)piperidine-1-carboxylateHCID 5049666Sodium triacetoxyborohydride

生成物 1

HCID 684891571,1-Dimethylethyl 2-((4-(methoxycarbonyl)phenylmethylamino)methyl)-1-piperidinecarboxylate収率 96.6%

試薬・触媒・溶媒 2

HCID 962Water溶媒HCID 63651,1-Dichloroethane溶媒

実験手順

A solution of 1-Boc-2-aminomethylpiperidine (429 mg, 2 mmol) and methyl 4-formylbenzoate (329 mg, 2 mmol) in dichloroethane (10 mL) was stirred as acetic acid (180 mg, 3 mmol) and sodium triacetoxyborohydride (487 mg, 2.3 mmol) were added sequentially. The reaction was stirred at ambient temperature for 17 hours. The reaction was poured into water and extracted with methylene chloride (2×). The organic phase was dried over sodium sulfate, filtered, and concentrated. Purification on silica gel using a gradient of ethyl acetate in hexane gave 0.7 g of 1,1-dimethylethyl 2-((4-(methoxycarbonyl)phenylmethylamino)methyl)-1-piperidinecarboxylate.

後処理

  1. additionwere added sequentially
  2. extractionextracted with methylene chloride (2×)
  3. dry with materialThe organic phase was dried over sodium sulfate
  4. filtrationfiltered
  5. concentrationconcentrated
  6. customPurification on silica gel using a gradient of ethyl acetate in hexane

出典と根拠

ORDレコード
ord-1c2642caec064d1e85d8d4390dbe9730
出典データセット
uspto-grants-2010_06
特許番号
US07737145B2

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