Enzyme-Catalyzed Polysulfide Synthesis Under Mild Conditions
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Solution Overview
Problem
Current processes for synthesizing functionalized organic polysulfides require high temperature and pressure conditions, are not environmentally friendly, and have low yields, necessitating the development of a more sustainable and efficient method using renewable starting materials and mild conditions.
Innovation Solution
A process involving the reaction of a compound of formula (II) with an inorganic polysulfide in the presence of a sulfhydrylase enzyme, under controlled pH and temperature in an aqueous solution, to produce enantiomerically pure functionalized organic polysulfides with improved yields and environmental sustainability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If conventional processes (reaction between mercaptan, sulfur and basic catalyst, or olefin with sulfur and hydrogen sulfide) are used to synthesize organic polysulfides, then the synthesis can be carried out industrially, but high temperature and pressure conditions are required
Solution Approach 1:
The patent changes the reaction parameters from high temperature and pressure to mild conditions (ambient or physiological temperature and pressure) by using enzyme catalysts. The biocatalytic process operates under physiological conditions, fundamentally altering the temperature and pressure parameters required for polysulfide synthesis compared to conventional industrial methods
Solution Approach 2:
The patent replaces mechanical/thermal energy input (high temperature and pressure) with biochemical catalysis. Instead of using basic catalysts and extreme conditions, the invention employs sulfhydrylase enzymes to catalyze the reaction between organic compounds and inorganic polysulfides under mild conditions, substituting a mechanical-thermal system with a biochemical system
2Ease of manufacture
If conventional processes are used for synthesizing functionalized organic polysulfides, then industrial production is possible, but the processes are not environmentally friendly
Solution Approach 1:
The patent employs enzymes that operate under physiological conditions and can be derived from renewable sources. The biocatalytic system uses water as solvent and operates at neutral pH, eliminating the need for harsh chemicals and extreme conditions. The process is self-sufficient in terms of catalysis, using enzyme active sites to drive the reaction without additional reagents that would create environmental pollution
Solution Approach 2:
The patent creates an environmentally benign reaction environment by using aqueous solutions at neutral pH and ambient temperature. This inert, mild environment replaces the harsh chemical environments of conventional processes, eliminating harmful emissions and waste products associated with high temperature and pressure industrial synthesis
3Ease of manufacture
If conventional processes are used for synthesizing functionalized organic polysulfides, then industrial production is possible, but yields are low
Solution Approach 1:
The patent uses enzyme intermediaries (sulfhydrylases) to mediate the reaction between organic compounds and inorganic polysulfides. These enzyme intermediaries provide highly specific and efficient catalysis, forming transient enzyme-substrate complexes that lower activation energy and increase reaction rates, thereby significantly improving synthesis yields compared to conventional direct reaction methods
Solution Approach 2:
The patent employs composite catalytic systems combining organic substrates with inorganic polysulfides under enzyme catalysis. This composite approach integrates multiple components (organic compound, inorganic polysulfide, enzyme catalyst) to achieve synergistic effects that enhance reaction efficiency and product yield beyond what any single component could achieve alone
4Ease of manufacture
If conventional processes are used for synthesizing functionalized organic polysulfides, then production can proceed, but mild temperature and pressure conditions cannot be achieved
Solution Approach 1:
The patent fundamentally changes the temperature and pressure parameters from industrial extremes to physiological mildness. The biocatalytic process operates at ambient or body temperature (20-40°C) and atmospheric pressure, completely inverting the temperature and pressure conditions required by conventional industrial synthesis methods
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
The process achieves higher yields and environmental sustainability by retaining asymmetric carbon configuration and allowing for additional functionalization, making it suitable for various applications such as lubrication, catalyst sulfidation, and therapeutic uses.
Implementation Method 1
reaction between said at least compound of formula (II) and said at least inorganic polysulfide in the presence of at least one enzyme chosen from sulfhydrylases
Data Source
AI summary
Provided is process for the synthesis of at least one functionalized organic polysulfide.