Tetramethyltin → Methyl 7-methyl-3-oxo-3,4-dihydro-2H-pyrido[3,2-b][1,4]thiazine-6-carboxylate

HRID 639026ノート

反応式

HRID 639026 の反応式
Br[C:2]1[C:11]([C:12]([O:14][CH3:15])=[O:13])=[N:10][C:9]2[NH:8][C:7](=[O:16])[CH2:6][S:5][C:4]=2[CH:3]=1.[Li+].[Cl-].[Sn](C)(C)(C)[CH3:20]>CN(C=O)C.C(Cl)Cl.O.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>[CH3:20][C:2]1[C:11]([C:12]([O:14][CH3:15])=[O:13])=[N:10][C:9]2[NH:8][C:7](=[O:16])[CH2:6][S:5][C:4]=2[CH:3]=1

参加物

8

反応物 3

HCID 11661Tetramethyltin2 回HCID 433294Lithium ChlorideHCID 21873784Methyl 7-bromo-3,4-dihydro-3-oxo-2H-pyrido[3,2-b]-1,4-thiazine-6-carboxylate

生成物 1

HCID 21873746Methyl 7-methyl-3-oxo-3,4-dihydro-2H-pyrido[3,2-b][1,4]thiazine-6-carboxylate収率 44.2%

試薬・触媒・溶媒 4

HCID 178418476HCID 178418476、化合物触媒HCID 962Water溶媒HCID 6228Dimethylformamide溶媒HCID 6344Dichloromethane溶媒

反応条件

温度
100 °C

実験手順

Methyl 7-bromo-3-oxo-3,4-dihydro-2H-pyrido[3,2-b][1,4]thiazine-6-carboxylate (1.44 g, 4.75 mmol) was dissolved in DMF (20 mL) and treated with PdCl2(PPh3)2 (167 mg, 0.238 mmol), LiCl (604 mg, 14.2 mmol) and Me4Sn (0.66 mL, 4.75 mmol). The reaction was heated at 100° C. for 30 min, at which point the reaction was no longer proceeding. An additional 0.25 mL of Me4Sn was added and the reaction was heated for an additional 4 h. After cooling, the reaction was diluted with DCM and water. The product was extracted into DCM and the combined extract was dried (Na2SO4) and filtered and the concentrated in vacuo. Purification provided product (500 mg).

後処理

  1. temperaturethe reaction was heated for an additional 4 h
  2. temperatureAfter cooling
  3. extractionThe product was extracted into DCM
  4. extractionthe combined extract
  5. dry with materialwas dried (Na2SO4)
  6. filtrationfiltered
  7. concentrationthe concentrated in vacuo
  8. customPurification

出典と根拠

ORDレコード
ord-d5c1494e26644e518a25b61c2715b13b
出典データセット
uspto-grants-2010_04
特許番号
US07691850B2

反応ノート

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