Methyl iodide → 2-chloro-5-fluorobenzyl-6-methyl-3-(methylthio)-1,2,4-triazin-5(4H)-one

HRID 240292

反応式

HRID 240292 の反応式
[Cl:1][C:2]1[CH:17]=[CH:16][C:15]([F:18])=[CH:14][C:3]=1[CH2:4][N:5]1[C:10](=[O:11])[C:9]([CH3:12])=[N:8][NH:7][C:6]1=[S:13].[CH3:19]I.[OH-].[Na+]>C(O)C.O>[Cl:1][C:2]1[CH:17]=[CH:16][C:15]([F:18])=[CH:14][C:3]=1[CH2:4][N:5]1[C:10](=[O:11])[C:9]([CH3:12])=[N:8][N:7]=[C:6]1[S:13][CH3:19]

参加物

6

反応物 3

HCID 6328Methyl iodideHCID 14798Sodium HydroxideHCID 583285444-(2-chloro-5-fluorobenzyl)-6-methyl-3-thioxo-3,4-dihydro-1,2,4-triazin-5(2H)-one

生成物 1

HCID 583285422-chloro-5-fluorobenzyl-6-methyl-3-(methylthio)-1,2,4-triazin-5(4H)-one

試薬・触媒・溶媒 2

HCID 702Ethanol溶媒HCID 962Water溶媒

実験手順

To a suspension of 4-(2-chloro-5-fluorobenzyl)-6-methyl-3-thioxo-3,4-dihydro-1,2,4-triazin-5(2H)-one (29, 3.06 g, 10.72 mmol) in ethanol (50 mL) was added MeI (2.44 g, 17.1 mmol) followed by NaOH (429 mg, 10.72 mmol). The mixture was stirred at RT for 40 min to produce a clear yellow solution. The reaction was diluted with water (200 mL), and extracted with EtOAc (100 mL×3). The extracts were washed with brine, dried over MgSO4, and concentrated to give the crude product (3.195 g). This was crystallized from ethyl acetate-petroleum ether to give 4-(2-chloro-5-fluorobenzyl)-6-methyl-3-(methylthio)-1,2,4-triazin-5(4H)-one (30). MS: m/z, 300 (100%, M+1), 302 (35%).

後処理

  1. customto produce a clear yellow solution
  2. extractionextracted with EtOAc (100 mL×3)
  3. washThe extracts were washed with brine
  4. dry with materialdried over MgSO4
  5. concentrationconcentrated
  6. customto give the crude product (3.195 g)
  7. customThis was crystallized from ethyl acetate-petroleum ether

出典と根拠

ORDレコード
ord-80f68a1f472b43d79292fb6bd7b34256
出典データセット
uspto-grants-2014_02
特許番号
US08648073B2

関連ノート

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