Triethylamine → [6-Chloro-4-(3,3-dimethyl-but-1-ynyl)-pyridin-3-yl]-carbamic acid tert-butyl ester

HRID 513069

反応式

HRID 513069 の反応式
[C:1]([O:5][C:6](=[O:16])[NH:7][C:8]1[CH:9]=[N:10][C:11]([Cl:15])=[CH:12][C:13]=1I)([CH3:4])([CH3:3])[CH3:2].[CH3:17][C:18]([CH3:22])([CH3:21])[C:19]#[CH:20].C(N(CC)CC)C>C1(C)C=CC=CC=1.O.[Cu]I.Cl[Pd](Cl)([P](C1C=CC=CC=1)(C1C=CC=CC=1)C1C=CC=CC=1)[P](C1C=CC=CC=1)(C1C=CC=CC=1)C1C=CC=CC=1>[C:1]([O:5][C:6](=[O:16])[NH:7][C:8]1[CH:9]=[N:10][C:11]([Cl:15])=[CH:12][C:13]=1[C:20]#[C:19][C:18]([CH3:22])([CH3:21])[CH3:17])([CH3:4])([CH3:3])[CH3:2]

参加物

8

反応物 3

HCID 8471TriethylamineHCID 135123,3-Dimethyl-1-butyneHCID 53415320tert-Butyl (6-chloro-4-iodopyridin-3-yl)carbamate

生成物 1

HCID 57908146[6-Chloro-4-(3,3-dimethyl-but-1-ynyl)-pyridin-3-yl]-carbamic acid tert-butyl ester収率 78%

試薬・触媒・溶媒 4

HCID 24350Copper(1+) iodide; Copper(I) iodide; Cuprous iodide; Cuprous iodide (CuI)触媒HCID 178418476HCID 178418476、化合物触媒HCID 962Water溶媒HCID 1140Toluene溶媒

反応条件

温度
70 °C

実験手順

To a deoxygenated solution of (6-chloro-4-iodo-pyridin-3-yl)-carbamic acid tert-butyl ester (23.3 g, 65.6 mmol), 3,3-dimethyl-but-1-yne (53.8 g, 0.656 mol), CuI (623 mg, 3.3 mmol) and triethylamine (13.3 g, 0.13 mol) in toluene (150 mL) and water (50 mL) was added Pd(PPh3)2Cl2 (2.30 g, 3.28 mmol) under N2. The mixture was heated at 70° C. and stirred for 24 hours. The solid was filtered off and washed with ethyl acetate (200 mL×3). The filtrate was evaporated under reduced pressure to obtain a residue, which was purified by column (petroleum ether/ethyl acetate=10/1) to give [6-chloro-4-(3,3-dimethyl-but-1-ynyl)-pyridin-3-yl]-carbamic acid tert-butyl ester (15.8 g, 78%). 1H NMR (300 MHz, CDCl3) δ 9.10 (br s, 1H), 7.21 (s, 1H), 6.98 (br s, 1H), 1.53 (s, 9H), 1.36 (s, 9H).

後処理

  1. filtrationThe solid was filtered off
  2. washwashed with ethyl acetate (200 mL×3)
  3. customThe filtrate was evaporated under reduced pressure
  4. customto obtain a residue, which
  5. customwas purified by column (petroleum ether/ethyl acetate=10/1)

出典と根拠

ORDレコード
ord-625d21f062fd45b0ae63ef512db8e683
出典データセット
uspto-grants-2015_08
特許番号
US09102672B2

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