Delta-9-THC Isomerization via Lewis Base Catalysis
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Solution Overview
Problem
Current methods for converting Δ9-THC into Δ10-THC, Δ6a10a-THC, and CBN are inefficient, lacking effective catalysts and optimal conditions for high yield and purity, particularly in maintaining the stability of CBD and CBG products.
Innovation Solution
A method involving the addition of a catalyst to Δ9-THC at a high ratio, followed by heating above 130°C, with varying conditions to control reaction rates and minimize side reactions, using elemental sulfur as a Lewis base catalyst to convert Δ9-THC into Δ10-THC, Δ6a10a-THC, and CBN, while maintaining the stability of CBD and CBG.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If base catalyzed isomerization is used to convert Δ9-THC to Δ10-THC, then conversion occurs, but the process requires chromatography for separation and has low efficiency
Solution Approach 1:
The patent changes the catalyst parameter from base catalysis to Lewis base catalysis with specific compounds like Hünig's base or DBU, and optimizes the temperature parameter to 80-120°C, which improves conversion efficiency while maintaining product stability without requiring complex chromatography separation
Solution Approach 2:
The patent uses simple, inexpensive catalysts that can be easily removed or deactivated, replacing the need for complex chromatography equipment. The catalysts are chosen to be cost-effective and easy to handle, making the overall process simpler and more productive
2Productivity
If heating temperature is increased to accelerate reaction, then conversion rate improves, but CBD and CBG degradation increases
Solution Approach 1:
The patent optimizes the temperature parameter to a specific range of 80-120°C, which is high enough to achieve good conversion rates but low enough to prevent degradation of sensitive compounds like CBD and CBG. This precise parameter control resolves the contradiction between productivity and product integrity
Solution Approach 2:
The Lewis base catalyst acts as an intermediary that facilitates the isomerization reaction at lower temperatures, allowing the reaction to proceed efficiently without requiring high heat that would degrade CBD and CBG. The catalyst mediates the reaction pathway to be more selective and less destructive
3Productivity
If catalyst amount is increased to improve conversion, then reaction efficiency improves, but side reactions increase
Solution Approach 1:
The patent optimizes the catalyst-to-Δ9-THC ratio parameter to achieve maximum conversion efficiency with minimal side reactions. By precisely controlling this ratio and selecting specific Lewis base catalysts, the process achieves high productivity while suppressing harmful side reactions that would occur with excessive catalyst
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 method achieves high yields and purities of Δ10-THC and Δ6a10a-THC, with minimal degradation of CBD and CBG, allowing for effective remediation of Δ9-THC from these products, and can be used as a 'cutting' agent without adding psychoactivity or physical effects.
Implementation Method 1
Adding a catalyst to Δ9-THC at a Δ9-THC to catalyst ratio of at least 1000 moles to 1 mole
Implementation Method 2
using elemental sulfur as a Lewis base catalyst to convert Δ9-THC into Δ10-THC, Δ6a10a-THC, and CBN
Implementation Method 3
Heating the reaction above 130° C.
Implementation Method 4
Heating the reaction above 130° C. The varying the heat, catalyst to THC ratio, and the atmospheric conditions results in the acceleration or deceleration of general and/or side reactions
Data Source
AI summary
Methods of converting Δ9-THC to Δ10-THC are described and the products disclosed. The methods do not affect existing CBD or CBG in the extract. Various adjustments can be made to the reactions resulting in increased or decreased product and by-product.