4-Chloro-2-(methylthio)pyrimidine-5-carboxylic acid ethyl ester → Ethyl 4-(methylamino)-2-(methylsulfanyl)pyrimidine-5-carboxylate

HRID 336516

反応式

HRID 336516 の反応式
[CH2:1]([O:3][C:4]([C:6]1[C:7](Cl)=[N:8][C:9]([S:12][CH3:13])=[N:10][CH:11]=1)=[O:5])[CH3:2].C[CH2:16][N:17](C(C)C)C(C)C.Cl.CN>C(#N)C>[CH3:16][NH:17][C:7]1[C:6]([C:4]([O:3][CH2:1][CH3:2])=[O:5])=[CH:11][N:10]=[C:9]([S:12][CH3:13])[N:8]=1

参加物

5

反応物 3

HCID 800084-Chloro-2-(methylthio)pyrimidine-5-carboxylic acid ethyl esterHCID 81531DiisopropylethylamineHCID 6364545Methylamine hydrochloride

生成物 1

HCID 295697Ethyl 4-(methylamino)-2-(methylsulfanyl)pyrimidine-5-carboxylate収率 11.3%

試薬・触媒・溶媒 1

HCID 6342Acetonitrile溶媒

反応条件

温度
100 °C

実験手順

4-Chloro-2-methylsulfanyl-pyrimidine-5-carboxylic acid ethyl ester (10 g, 429 mmol) was dissolved in acetonitrile to which DIPEA (4.34 g, 642 mmol) and methylamine hydrochloride (11.10 g, 858 mmol) was added. The reaction mixture was stirred at 100° C. for 3 hours, then cooled to room temperature and poured in to ice water. Off-white crystalline solid precipitated out. The solid was collected by filtration on a Buchner funnel and dried under vacuum to give the desired product (11 g). 1H NMR (DMSO-d6): δ 1.30 (t, J=7 Hz, 3H), δ 2.46 (s, 3H), δ 2.99 (d, J=5 Hz, 3H), δ 4.29 (q, J=7 Hz, 2H), δ 8.09 (br, s, 1H), δ 8.53 (s, 1H).

後処理

  1. additionwas added
  2. temperaturecooled to room temperature
  3. customOff-white crystalline solid precipitated out
  4. filtrationThe solid was collected by filtration on a Buchner funnel
  5. customdried under vacuum

出典と根拠

ORDレコード
ord-a4b193244f334bc8b176808aa1d83f85
出典データセット
uspto-grants-2014_11
特許番号
US08889696B2

関連ノート

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