Method for Preparing Amidines from N-(alkyl lactams) via Dehydration Catalysis

USPTO published patent application US20260092067A1 disclosing a method for preparing amidines or derivatives from N-(amino-alkyl) lactams through dehydration catalysis. The method employs heterogeneous catalysts selected from Lewis acids (cerium oxide, boron phosphates, zirconium and modified zirconium oxides), Lewis acids combined with Bronsted acid components, and Bronsted acids such as phosphotungstic acid. The invention covers CPC classification C07D 487/04 (heterocyclic compounds with nitrogen atoms as ring members).

This patent application does not impose compliance obligations on regulated entities. Companies engaged in pharmaceutical manufacturing or fine chemical synthesis should be aware of this published method for potential freedom-to-operate considerations if developing similar amidine synthesis processes. The application is pending examination and may be granted, rejected, or require amendment before issuance. Intellectual property teams should monitor prosecution history for claim scope and potential licensing opportunities.