Triethylamine → tert-butyl 4-((5-bromo-1-isopropyl-1H-pyrazol-4-yl)methyl)-4-isocyanatopiperidine-1-carboxylate

HRID 880894ノート

反応式

HRID 880894 の反応式
[Br:1][C:2]1[N:6]([CH:7]([CH3:9])[CH3:8])[N:5]=[CH:4][C:3]=1[CH2:10][C:11]1(C(O)=O)[CH2:16][CH2:15][N:14]([C:17]([O:19][C:20]([CH3:23])([CH3:22])[CH3:21])=[O:18])[CH2:13][CH2:12]1.C1(P(N=[N+]=[N-])(C2C=CC=CC=2)=[O:34])C=CC=CC=1.C([N:46]([CH2:49]C)CC)C>C1(C)C=CC=CC=1>[Br:1][C:2]1[N:6]([CH:7]([CH3:9])[CH3:8])[N:5]=[CH:4][C:3]=1[CH2:10][C:11]1([N:46]=[C:49]=[O:34])[CH2:16][CH2:15][N:14]([C:17]([O:19][C:20]([CH3:23])([CH3:21])[CH3:22])=[O:18])[CH2:13][CH2:12]1

参加物

5

反応物 3

HCID 8471TriethylamineHCID 199401P,P-Diphenylphosphinic azideHCID 674917184-((5-bromo-1-isopropyl-1H-pyrazol-4-yl)methyl)-1-(tert-butoxycarbonyl)piperidine-4-carboxylic acid

生成物 1

HCID 71507904tert-butyl 4-((5-bromo-1-isopropyl-1H-pyrazol-4-yl)methyl)-4-isocyanatopiperidine-1-carboxylate収率 111.1%

試薬・触媒・溶媒 1

HCID 1140Toluene溶媒

実験手順

A mixture of 4-((5-bromo-1-isopropyl-1H-pyrazol-4-yl)methyl)-1-(tert-butoxycarbonyl)piperidine-4-carboxylic acid (2.54 g, 5.9 mmol), diphenylphosphoryl azide (1.79 g, 6.5 mmol) and triethylamine (0.91 mL, 6.5 mmol) in toluene (15 mL) was heated at reflux for 3 hours. The mixture was then cooled to room temperature and the solvent removed in vacuo. The crude product was purified by column chromatography to give tert-butyl 4-((5-bromo-1-isopropyl-1H-pyrazol-4-yl)methyl)-4-isocyanatopiperidine-1-carboxylate (2.8 g, 100%). 1H NMR (300 MHz, CDCl3, δ): 7.47 (s, 1H), 4.68 (m, 1H), 3.99 (m, 2H), 2.95 (m, 2H), 2.67 (s, 2H), 1.62 (m, 4H), 1.45 (m, 15H).

後処理

  1. temperaturewas heated
  2. temperatureat reflux for 3 hours
  3. customthe solvent removed in vacuo
  4. customThe crude product was purified by column chromatography

出典と根拠

ORDレコード
ord-6fb9aa680746478fb72d8796bcd45ac7
出典データセット
uspto-grants-2015_03
特許番号
US08993586B2

反応ノート

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