2-Furoic Acid Derivative Synthesis via Intermediate Conversion

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Solution Overview

Problem

Conventional methods for synthesizing 2-furoic acid derivatives, such as TOFA, result in low yields and poor scalability, limiting their commercial production and bioavailability.

Innovation Solution

A process involving the conversion of a 2-furoic acid ester to a symmetrically substituted alkoxy 2-furoic acid alkyl ester intermediate, followed by saponification, is developed, allowing for high-yield production at lower temperatures without the need for intermediate isolation, using a base and Lewis acid catalysts like titanium tetraisopropoxide.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Productivity

If conventional synthesis methods are used, then TOFA can be produced, but the yield is low and scalability is poor

Engineering Contradiction:

ImproveyieldVSAvoidscalability

Core Design Contradiction:

ProductivityVSReliability

Solution Approach 1:

The patent changes the reaction parameters by using a two-step process: first converting the ester to a symmetrically substituted intermediate, then saponifying it. This parameter change in the synthesis pathway achieves yields greater than 70% and enables kilogram-scale production with consistent high yields, resolving the contradiction between low yield and poor scalability

Inventive Principle:

Principle #35Parameter changes

Solution Approach 2:

The synthesis process is segmented into two distinct steps: (1) conversion of the 2-furoic acid ester to a symmetrically substituted alkoxy 2-furoic acid alkyl ester intermediate, and (2) saponification of this intermediate to produce the final 2-furoic acid derivative. This segmentation allows each step to be optimized independently, achieving both high yield and scalability

Inventive Principle:

Principle #1Segmentation

2Productivity

If conventional synthesis methods are used, then TOFA can be produced, but the production temperature is high and efficiency is low

Engineering Contradiction:

ImproveefficiencyVSAvoidproduction temperature

Core Design Contradiction:

ProductivityVSTemperature

Solution Approach 1:

The patent performs a preliminary conversion of the ester to a symmetrically substituted intermediate before the final saponification step. This preliminary action creates a more reactive intermediate that can be saponified under milder conditions, improving overall efficiency while reducing the temperature requirements for the final product formation

Inventive Principle:

Principle #10Preliminary action

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 approach achieves yields greater than 70% at lower temperatures, significantly improving the scalability and efficiency of TOFA production, enabling kilogram-scale consistent high yields.

Implementation Method 1

using a base and Lewis acid catalysts like titanium tetraisopropoxide

Methodology Applied

Scientific EffectCatalysis: Catalysis

Implementation Method 2

saponifying the intermediate compound of Formula (III) to form the compound of Formula (I)

Methodology Applied

Scientific EffectSaponification: Hydrolysis

Data Source

PatentEP3253743B1Synthetic process for preparing 2-furoic acid derivatives

Publication Date: 2019.05.15 DERMIRA INC

AI summary

Disclosed herein are processes for forming 2-furoic acid derivatives represented by Formula (I):.