2-Methyl-3-butyn-2-ol → 7-chloro-4,5-dihydro-3-(3-hydroxy-3-methyl-1-butynyl)-5-methyl-6H-imidazo[1,5-a][1,4]benzodiazepin-6-one

HRID 1606970ノート

反応式

HRID 1606970 の反応式
Br[C:2]1[N:3]=[CH:4][N:5]2[C:11]3[CH:12]=[CH:13][CH:14]=[C:15]([Cl:16])[C:10]=3[C:9](=[O:17])[N:8]([CH3:18])[CH2:7][C:6]=12.[CH3:19][C:20]([OH:24])([C:22]#[CH:23])[CH3:21]>C(NCC)C.C(Cl)Cl.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.[Cu]I>[Cl:16][C:15]1[C:10]2[C:9](=[O:17])[N:8]([CH3:18])[CH2:7][C:6]3[N:5]([CH:4]=[N:3][C:2]=3[C:23]#[C:22][C:20]([OH:24])([CH3:21])[CH3:19])[C:11]=2[CH:12]=[CH:13][CH:14]=1

参加物

7

反応物 2

HCID 82582-Methyl-3-butyn-2-olHCID 198515903-bromo-7-chloro-4,5-dihydro-5-methyl-6H-imidazo[1,5-a][1,4]benzodiazepin-6-one

生成物 1

HCID 198306547-chloro-4,5-dihydro-3-(3-hydroxy-3-methyl-1-butynyl)-5-methyl-6H-imidazo[1,5-a][1,4]benzodiazepin-6-one

試薬・触媒・溶媒 4

HCID 24350Copper(1+) iodide; Copper(I) iodide; Cuprous iodide; Cuprous iodide (CuI)触媒HCID 178418476HCID 178418476、化合物触媒HCID 6344Dichloromethane溶媒HCID 8021Diethylamine溶媒

実験手順

3.26 g (10 mmol) of 3-bromo-7-chloro-4,5-dihydro-5-methyl-6H-imidazo[1,5-a][1,4]benzodiazepin-6-one was heated to boiling under reflux overnight with 1.10 g (12 mmol) of 2-methyl-3-butyn-2-ol, 70 mg of bis-(triphenylphosphine)-palladium(II) dichloride and 10 mg of copper(I) iodide in 20 ml of diethylamine and 15 ml of methylene chloride. The reaction mixture was evaporated and the residue was dissolved in methylene chloride. After chromatography of the solution on silica gel while eluting with ethyl acetate and crystallization from ethyl acetate there was obtained 7-chloro-4,5-dihydro-3-(3-hydroxy-3-methyl-1-butynyl)-5-methyl-6H-imidazo[1,5-a][1,4]benzodiazepin-6-one of melting point 194°-195°.

後処理

  1. customThe reaction mixture was evaporated
  2. dissolutionthe residue was dissolved in methylene chloride
  3. washAfter chromatography of the solution on silica gel while eluting with ethyl acetate and crystallization from ethyl acetate

出典と根拠

ORDレコード
ord-0a1f3d88acff4796ba8dafac7984f941
出典データセット
uspto-grants-1989_09
特許番号
US04863920

反応ノート

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