Alkanenitrile Odorants With Stable Woody and Patchouli Notes
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Solution Overview
Problem
Existing fragrance compounds lack unique odour profiles and stability, limiting their effectiveness in perfumery and fragrance applications.
Innovation Solution
Development of 3-(2-methylenealkoxy)alkanenitrile derivatives with diverse odour notes such as dry, woody, dusty, and patchouli, which are synthesized through advantageous stepwise operations, enhancing stability and compatibility with other fragrance materials.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If existing fragrance compounds are used, then fragrance compositions can be created, but the odour profiles lack uniqueness and stability is limited
Solution Approach 1:
The patent applies parameter changes by modifying the chemical structure of nitrile compounds - specifically using 3-(2-methylenealkoxy)alkanenitrile derivatives with varying alkyl chain lengths and substitutions. This structural parameter modification results in compounds with enhanced stability while maintaining diverse odour profiles including dry, woody, dusty, and patchouli notes, thereby resolving the contradiction between stability and odour profile diversity
2Adaptability or versatility
If novel 3-(2-methylenealkoxy)alkanenitrile derivatives are synthesized, then unique odour profiles and superior stability are achieved, but synthesis complexity increases
Solution Approach 1:
The synthesis is divided into segmented steps: first preparing the nitrile compound, then reacting it with 2-methylenealdehyde in a second step. This segmentation of the synthesis process makes the complex reaction sequence more manageable and controllable, reducing overall synthesis complexity while producing compounds with unique odour profiles and superior stability
Data Source
AI summary
The present invention relates to new classes of odorous 3-(2- methylenealkoxy)alkanenitrile derivatives of formula (I) which are useful as fragrance or flavor materials in particular in providing dry, woody, dusty, earthy, and/or patchouli notes together with optional coriander, aldehydic, citrus, mandarin, pear, cinnamon, and/ or petal floral-like notes to perfume, aroma or deodorizing/masking compositions.