Sucrose-6-Ester Preparation via Atomized Cyclic Dehydration
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Solution Overview
Problem
Current methods for synthesizing sucrose-6-ester face challenges such as slow dehydration reactions leading to side reactions, decomposition of saccharides, and low yield due to prolonged reaction times, making the process inefficient and costly.
Innovation Solution
A method involving atomization of a reaction solution into droplets, followed by dehydration with a gasified medium, separation, and multiple cycles of dehydration and acylation to produce sucrose-6-ester efficiently.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Stability of the object's composition
If traditional dehydration methods are used, then the reaction can proceed smoothly, but the reaction time becomes excessively long (1-3 hours or more)
Solution Approach 1:
The patent divides the dehydration process into multiple stages: initial dehydration to form sucrose organic tin ester, followed by separation, then cyclic dehydration and acylation steps. This segmentation allows each step to be optimized independently, achieving complete dehydration within 1 hour while maintaining reaction smoothness.
Solution Approach 2:
The patent implements continuous dehydration through cyclic processes where the sucrose organic tin ester solution is repeatedly subjected to dehydration, separation, and acylation steps. This continuous action ensures complete water removal and high yield within a short time frame, avoiding the long reaction times of traditional methods.
2Stability of the object's composition
If dehydration reaction time is prolonged, then dehydration can be thorough, but side reactions and saccharide decomposition occur
Solution Approach 1:
The patent segments the dehydration process into discrete steps with separation in between, allowing thorough dehydration to occur within 1 hour without prolonged exposure to reaction conditions that would cause side reactions and saccharide decomposition.
Solution Approach 2:
The patent uses atomization technology to rapidly remove water from the reaction system, rushing through the dehydration process before side reactions can occur. The cyclic process repeatedly removes water quickly, achieving complete dehydration without the prolonged time necessary for harmful side reactions.
3Device complexity
If traditional dehydration methods are used, then the process is simple, but the yield is reduced due to decomposition and side reactions
Solution Approach 1:
The patent divides the process into multiple steps including dehydration, separation, cyclic dehydration, and acylation. Each step is optimized to maximize yield, and the cumulative effect of these segmented steps achieves high yield (80-90% or higher) while maintaining reasonable process complexity.
Solution Approach 2:
The patent implements continuous cyclic dehydration and acylation steps that maintain high yield throughout the process. The repeated cycles ensure complete conversion of sucrose to sucrose-6-ester with minimal decomposition and side reactions, achieving superior productivity compared to traditional single-step methods.
4Speed
If atomization drying technology is applied, then dehydration speed increases significantly, but the process complexity increases
Solution Approach 1:
The patent changes the physical state and surface area parameters by atomizing the reaction solution into fine droplets. This parameter change dramatically increases dehydration speed while the atomization system, though more complex than traditional methods, is integrated into an existing industrial framework and can be optimized for specific applications.
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 method achieves rapid dehydration, reduces side reactions, improves yield, and lowers energy consumption, making it suitable for large-scale industrial production.
Implementation Method 1
atomizing the reaction solution to form droplets
Implementation Method 2
contacting the droplets with a gasified dehydration medium such that the droplets undergo a dehydration reaction
Implementation Method 3
dissolving an organo-tin compound and sucrose in a polar solvent, performing azeotropic dehydration
Implementation Method 4
heating and dissolving sucrose and an organo-tin compound in a polar aprotic solvent
Data Source
AI summary
Provided is a method for preparing a sucrose-6-ester, including: preparing a reaction solution of sucrose and an organo-tin compound; atomizing the reaction solution to form droplets; thoroughly mixing and contacting the droplets with a gasified dehydration medium such that the droplets undergo a dehydration reaction to obtain an intermediate mixture containing sucrose organic tin ester droplets; separating the intermediate mixture to obtain a sucrose organic tin ester solution and a dehydrated gas-liquid mixture; recovering the sucrose organic tin ester solution obtained in the separation step and cycling to the atomization and dehydration steps several times; and subjecting an organic acid anhydride to an acylation reaction with the sucrose organic tin ester solution to obtain the sucrose-6-ester.