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The active pharmaceutical ingredient, 2-Cyclohexylcarbonyl-4-oxo-1,2,3,6,7,11 bhexahydro-4H-pyrazino[2,1-a] isoquinoline has been achieved in a deep eutectic solvent (DES) which is an efficient, green and novel route of synthesis. The synthesis involves three N-alkylation/acylation reactions. The corresponding reactions using inexpensive raw materials proceed efficiently in a deep eutectic solvent (DES) with an improved yield that makes synthesis cost effective. The present reaction offers excellent selectivity which lacks a product of N, N-dialkylation. Ease of recovery and reusability of DES makes this process efficient and environment-friendly.

rasayan journal of chemistry/rasayan journal of chemistry

ENVIRONMENTALLY BENIGN GREEN SYNTHESIS OF INTERMEDIATES AND THEIR DERIVATIVES OF 2- CYCLOHEXYLCARBONYL-4-OXO-1,2,3,6,7,11 BHEXAHYDRO-4H-PYRAZINO[2,1-A] ISOQUINOLINE VIA NALKYLATION/ACYLATION