Reaktion #53347

Reaktionsgleichung

starting material I

(±)-8-Methyl-5-(4-nitrophenyl)-7-thiocarbamoyl-8,9-dihydro-7H-1,3-dioxolo[4,5-h][2,3]benzodiazepine

ethyl 2-bromopropionate

dimethylformamide

→

title compound

Ausbeute 95.0%

(±)-7-(4,5-Dihydro-5-methyl-4-oxo-thiazol-2-yl)-8-methyl-5-(4-nitrophenyl)-8,9-dihydro-7H-1,3-dioxolo[4,5-h][2,3]benzodiazepine

Ausbeute 95.0%

Lösungsmittel

water

Reaktionsbedingungen

Aufarbeitung

1. 1
   Sonstigeobtained crude product
2. 2
   Sonstigewas purified
3. 3
   Temperaturby refluxing in 15 ml of ethanol

Vorschrift

A mixture of 1.00 g (2.60 mmol) of the starting material I, 0.94 g (5.19 mmol) of ethyl 2-bromopropionate and 10 ml of dimethylformamide was stirred at 80-90° C. for 2 h. After diluting with water the obtained crude product was purified by refluxing in 15 ml of ethanol to yield 1.08 g (95%) of the title compound; Mp.: 213-214° C.

Quelle