2-cyclopentyl-6-ethylpyrimidin-4(3H)-one → 4-Chloro-2-cyclopentyl-6-ethylpyrimidine

HRID 1508929ノート

反応式

HRID 1508929 の反応式
O(Cl)[Cl:2].[P+5].[CH:5]1([C:10]2[NH:15][C:14](=O)[CH:13]=[C:12]([CH2:17][CH3:18])[N:11]=2)[CH2:9][CH2:8][CH2:7][CH2:6]1>[OH-].[Na+]>[Cl:2][C:14]1[CH:13]=[C:12]([CH2:17][CH3:18])[N:11]=[C:10]([CH:5]2[CH2:9][CH2:8][CH2:7][CH2:6]2)[N:15]=1

参加物

4

反応物 2

HCID 1360851072-cyclopentyl-6-ethylpyrimidin-4(3H)-oneHCID 178479711HCID 178479711、化合物

生成物 1

HCID 609214014-Chloro-2-cyclopentyl-6-ethylpyrimidine収率 57%

試薬・触媒・溶媒 1

HCID 14798Sodium Hydroxide溶媒

反応条件

温度
100 °C

実験手順

Phosphorus(V) oxychloride (150 g, 99.0 mmol) was slowly added to 2-cyclopentyl-6-ethylpyrimidin-4(3H)-one (18.9 g, 98.3 mmol) at 0° C. Then, the reaction mixture was warmed to 100° C. for 3 h. After this time, the mixture was cooled, diluted with sodium hydroxide, and extracted with ethyl acetate. The combined organic layer was dried over anhydrous sodium sulfate, filtered, and the filtrate was concentrated. The residue was purified by column chromatography (silica, hexanes/dichloromethane) to afford the title compound (5.1 g, 57%) as yellow oil. MW=210.70. 1H NMR (CDCl3, 300 MHz) δ 7.01 (s, 1H), 3.36-3.20 (m, 1H), 2.74 (q, J=7.5 Hz, 2H), 2.14-1.99 (m, 2H), 1.98-1.76 (m, 4H), 1.75-1.63 (m, 2H), 1.29 (t, J=7.5 Hz, 3H); APCI MS m/z 211 [M+H]+.

後処理

  1. temperatureAfter this time, the mixture was cooled
  2. extractionextracted with ethyl acetate
  3. dry with materialThe combined organic layer was dried over anhydrous sodium sulfate
  4. filtrationfiltered
  5. concentrationthe filtrate was concentrated
  6. customThe residue was purified by column chromatography (silica, hexanes/dichloromethane)

出典と根拠

ORDレコード
ord-252381d0f4b64e1d8bdcf79e55672179
出典データセット
uspto-grants-2015_12
特許番号
US09221843B2

反応ノート

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