Ethyl 8-chloro-5-methyl-6-oxo-5,6-dihydro-4H-imidazo[1,5-a][1,4]benzodiazepine-3-carboxylate(CAS: 78756-33-9)

Ethyl 8-chloro-5-methyl-6-oxo-5,6-dihydro-4H-imidazo[1,5-a][1,4]benzodiazepine-3-carboxylate is a crystalline white solid with a molecular weight of approximately 324.02 g/mol. It has a low solubility in water (less than 0.1g/100mL at 25°C) and is soluble in organic solvents like methanol, ethanol, and dichloromethane. The compound is highly reactive, particularly towards nucleophiles and reducing agents.

Ethyl 8-chloro-5-methyl-6-oxo-5,6-dihydro-4H-imidazo[1,5-a][1,4]benzodiazepine-3-carboxylate can be synthesized via a multi-step process. Initially, a 5,6-dihydro-4H-imidazo[1,5-a][1,4]benzodiazepin-3-one intermediate is prepared. This is then reacted with 8-chloro-5-methyl-6-oxo-5,6-dihydro-4H-imidazo[1,5-a][1,4]benzodiazepine-3-carboxylic acid using an esterification procedure, typically catalyzed by a strong acid like sulfuric acid or phosphoric acid, to obtain the final product with a high yield of 80-90%.

Ethyl 8-chloro-5-methyl-6-oxo-5,6-dihydro-4H-imidazo[1,5-a][1,4]benzodiazepine-3-carboxylate is primarily used in the pharmaceutical industry for its potential applications as an intermediate in drug synthesis. It is also utilized in the development of certain sensors and as a building block in organic synthesis for the production of various chemical compounds.

Precautions when handling Ethyl 8-chloro-5-methyl-6-oxo-5,6-dihydro-4H-imidazo[1,5-a][1,4]benzodiazepine-3-carboxylate include wearing appropriate personal protective equipment (PPE) such as gloves, safety goggles, and lab coats. The compound should be stored in a cool, dry place away from sources of heat and moisture. Spills should be cleaned up immediately using appropriate absorbents, and the area should be well-ventilated. Always refer to the material safety data sheet (MSDS) for detailed handling and disposal instructions.