Triethylamine → tert-Butyl 3-[6-(4-oxo-4H-1,3-benzothiazin-2-yl)-2-pyridyl]propanoate

HRID 499332ノート

反応式

HRID 499332 の反応式
[C:1]([C:3]1[N:8]=[C:7]([CH2:9][CH2:10][C:11]([O:13][C:14]([CH3:17])([CH3:16])[CH3:15])=[O:12])[CH:6]=[CH:5][CH:4]=1)#[N:2].[C:18](OC)(=[O:26])[C:19]1[C:20](=[CH:22][CH:23]=[CH:24][CH:25]=1)[SH:21].C(N(CC)CC)C>C1(C)C=CC=CC=1>[O:26]=[C:18]1[C:19]2[CH:25]=[CH:24][CH:23]=[CH:22][C:20]=2[S:21][C:1]([C:3]2[N:8]=[C:7]([CH2:9][CH2:10][C:11]([O:13][C:14]([CH3:17])([CH3:16])[CH3:15])=[O:12])[CH:6]=[CH:5][CH:4]=2)=[N:2]1

参加物

5

反応物 3

HCID 8471TriethylamineHCID 21009Benzoic acid, 2-mercapto-, methyl esterHCID 22939301Tert-butyl 3-(6-cyano-2-pyridyl)propanoate

生成物 1

HCID 22939300tert-Butyl 3-[6-(4-oxo-4H-1,3-benzothiazin-2-yl)-2-pyridyl]propanoate収率 57.7%

試薬・触媒・溶媒 1

HCID 1140Toluene溶媒

実験手順

tert-Butyl 3-(6-cyano-2-pyridyl)propanoate (0.74 g, 3.2 mmol) and methyl thiosalicylate (1.1 g, 6.4 mmol) were dissolved in toluene (3 ml). Triethylamine (1.4 ml, 9.7 mmol) was added thereto. The reaction mixture was refluxed for 7.5 hrs, subjected to a silica gel (75 g) column chromatography, eluted with hexane-ethyl acetate (2:1, v/v) and recrystallized from ethanol-hexane to give the titled compound (0.68 g, 57%) as white crystals.

後処理

  1. temperatureThe reaction mixture was refluxed for 7.5 hrs
  2. washeluted with hexane-ethyl acetate (2:1
  3. customv/v) and recrystallized from ethanol-hexane

出典と根拠

ORDレコード
ord-90af815bf6e846b183c47c11ee677993
出典データセット
uspto-grants-2010_08
特許番号
US07767665B2

反応ノート

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