Cyclohexenone Synthesis via Ketone-Aldehyde Domino Condensation
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Solution Overview
Problem
Current methods for synthesizing cyclohexenone and cyclohexenol compounds are costly, unstable, and difficult to industrialize, posing safety risks due to high-cost starting materials and complex reaction processes, which limits the perfume and flavor industry's ability to meet growing environmental, regulatory, and economic constraints.
Innovation Solution
A new process involving the condensation of a ketone with an α-methylene aldehyde to produce cyclohexenone compounds through a domino reaction, using inexpensive substrates and safer conditions, allowing for the generation of a wide range of new and known compounds with improved yield and ease of industrialization.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If conventional methods using alkyl vinyl ketone or β-ketoester are used for synthesizing cyclohexenones, then cyclohexenone compounds can be produced, but the process becomes costly, unstable, hazardous, and difficult to industrialize
Solution Approach 1:
The patent replaces expensive starting materials (alkyl vinyl ketone, β-ketoester) with inexpensive and readily available ketones and α-methylene aldehydes. This substitution dramatically reduces material costs and simplifies the supply chain, making the synthesis process more accessible for industrial application without compromising the ability to produce diverse cyclohexenone and cyclohexenol compounds.
Solution Approach 2:
The patent fundamentally changes the reaction parameters by switching from condensation reactions requiring complex substrates to a domino reaction between simple ketones and α-methylene aldehydes. This parameter change transforms the synthesis from a multi-step, hazardous process into a single-step, safe procedure that is easier to control and scale industrially.
2Ease of manufacture
If expensive starting materials like alkyl vinyl ketone and β-ketoester are used, then cyclohexenone compounds can be synthesized, but the production cost increases significantly
Solution Approach 1:
The patent employs inexpensive ketones and α-methylene aldehydes as starting materials, replacing costly substrates like alkyl vinyl ketone and β-ketoester. These cheap, readily available materials significantly reduce the bill of materials cost while still enabling the synthesis of valuable cyclohexenone and cyclohexenol compounds with desirable fragrance properties.
3Reliability
If conventional synthesis methods are used, then cyclohexenone compounds can be produced, but safety risks increase due to hazardous starting materials and unstable reactions
Solution Approach 1:
The patent converts potentially hazardous starting materials into safe, readily available ketones and α-methylene aldehydes. This substitution eliminates the safety risks associated with unstable and hazardous substrates while maintaining the ability to produce the desired cyclohexenone and cyclohexenol compounds through a stable, controllable domino reaction.
4Reliability
If complex condensation reactions are used to synthesize cyclohexenones, then the desired compounds can be obtained, but the reaction stability decreases and implementation becomes difficult
Solution Approach 1:
The patent merges multiple reaction steps into a single domino reaction between ketones and α-methylene aldehydes. This consolidation transforms a complex, multi-step condensation process into a simple, one-pot reaction that is more stable, easier to control, and simpler to implement industrially, while still producing the desired cyclohexenone and cyclohexenol compounds.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
This process provides a simple, cost-effective, and safe method to produce cyclohexenone and cyclohexenol compounds, offering a diverse array of fragrant molecules with specific olfactory profiles, enhancing the industry's ability to innovate and comply with regulatory standards.
Implementation Method 1
The process according to the present invention consists of the condensation of a ketone with an α-methylene aldehyde to obtain, via a domino reaction, cyclohexenone compounds
Implementation Method 2
The process according to the present invention consists of the condensation of a ketone with an α-methylene aldehyde to obtain, via a domino reaction, cyclohexenone compounds
Data Source
AI summary
The present invention concerns a method for synthesising cyclohexenone and cyclohexenol compounds having specific fragrances and remanence properties, said method consisting in condensing a ketone on an α-methylene-aldehyde in order to obtain, by means of a domino reaction, compounds of formula (I).