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 1606970Notizen

Reaktionsgleichung

Reaktionsgleichung von HRID 1606970
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

Komponenten

7

Edukt 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

Produkt 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

Reagenzien, Katalysatoren, Lösungsmittel 4

HCID 24350Copper(1+) iodide; Copper(I) iodide; Cuprous iodide; Cuprous iodide (CuI)KatalysatorHCID 178418476HCID 178418476, VerbindungKatalysatorHCID 6344DichloromethaneLösungsmittelHCID 8021DiethylamineLösungsmittel

Versuchsvorschrift

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°.

Aufarbeitung

  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

Quellen und Nachweise

ORD-Eintrag
ord-0a1f3d88acff4796ba8dafac7984f941
Quelldatensatz
uspto-grants-1989_09
Patentnummer
US04863920

Notizen zur Reaktion

Wird geladen…