2-Benzoyl-1,2,3,6,7,11b-hexahydro-4H-pyrazino[2,1-a]isoquinolin-4-one(CAS: 54761-87-4)

2-Benzoyl-1,2,3,6,7,11b-hexahydro-4H-pyrazino[2,1-a]isoquinolin-4-one is a crystalline solid with a molecular weight of approximately 336.3 g/mol. It has a pKa of around 3.5, indicating basic properties. The compound is moderately soluble in water and more soluble in organic solvents like methanol and ethanol. It is not reactive under normal conditions but can undergo ring-opening reactions under strong acid or base conditions.

2-Benzoyl-1,2,3,6,7,11b-hexahydro-4H-pyrazino[2,1-a]isoquinolin-4-one is typically synthesized via a multistep reaction involving the condensation of benzoyl chloride with an appropriate N-substituted pyrazine derivative. The reaction is catalyzed by a Lewis acid such as aluminum chloride and proceeds with high selectivity. The overall yield is around 70-80%. Further purification is achieved by recrystallization from a suitable solvent.

2-Benzoyl-1,2,3,6,7,11b-hexahydro-4H-pyrazino[2,1-a]isoquinolin-4-one is primarily used in the pharmaceutical industry as an intermediate in the synthesis of various bioactive compounds. It also finds applications in the chemical sensing industry, where it is used as a selective sensor for certain metal ions. Additionally, this compound is explored in the polymer industry for its potential use in the development of novel materials.

When handling 2-Benzoyl-1,2,3,6,7,11b-hexahydro-4H-pyrazino[2,1-a]isoquinolin-4-one, it is important to wear appropriate personal protective equipment (PPE), including gloves, safety goggles, and laboratory coat. The compound should be stored in a cool, dry place away from direct sunlight. In case of a spill, it should be carefully cleaned up using appropriate absorbent materials, and the area should be well-ventilated. For detailed information, refer to the Safety Data Sheet (SDS) for proper handling and disposal instructions.