Peroxocobalt Complex Catalyzes Nitrile to Hydroxamic Acid Conversion

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Solution Overview

Problem

Current methods for activating nitrile functional groups require strong acids, strong bases, or high temperatures, making them inefficient for industrial applications, and there is a need for a method to convert nitrile into hydroxamic acid functional groups under mild conditions for potential use in cancer treatment.

Innovation Solution

A peroxocobalt complex is used to convert nitrile functional groups into hydroxamic acid functional groups at room temperature and normal pressure, producing an intermediate that can inhibit cancer cell growth by releasing a hydroxymate functional group with chelating properties.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Ease of manufacture

If strong acid or strong base is used to activate nitrile, then the nitrile group can be converted into other functional groups, but the reaction conditions become harsh and require strong acids or bases

Engineering Contradiction:

Improvenitrile activationVSAvoidstrong acid or base requirement

Core Design Contradiction:

Ease of manufactureVSObject-affected harmful factors

Solution Approach 1:

A cobalt porphyrin catalyst is introduced as an intermediary substance to mediate the activation of the nitrile group. The catalyst enables the conversion of nitrile to hydroxamic acid under mild conditions by providing an alternative reaction pathway that does not require strong acids or bases, thus resolving the contradiction between ease of manufacture and harmful factors

Inventive Principle:

Principle #24Intermediary (Mediator)

Solution Approach 2:

The reaction parameters are changed from extreme conditions (strong acid/base, high temperature) to mild conditions (room temperature, neutral pH). The cobalt porphyrin catalyst allows the reaction to proceed at room temperature without requiring strong acids or bases, fundamentally changing the operational parameters of the process

Inventive Principle:

Principle #35Parameter changes

2Ease of manufacture

If high temperature is used to activate nitrile, then the reaction can proceed, but the energy consumption increases and mild conditions cannot be achieved

Engineering Contradiction:

Improvenitrile activationVSAvoidreaction temperature

Core Design Contradiction:

Ease of manufactureVSTemperature

Solution Approach 1:

The cobalt porphyrin catalyst acts as an intermediary that enables the reaction to proceed at room temperature by lowering the activation energy barrier. This eliminates the need for high temperature heating, resolving the contradiction between ease of manufacture and temperature requirements

Inventive Principle:

Principle #24Intermediary (Mediator)

Solution Approach 2:

The mechanical/thermal activation method (heating) is replaced with a catalytic chemical activation method. Instead of using thermal energy to drive the reaction, a cobalt porphyrin catalyst provides a lower-energy pathway, substituting thermal mechanics with chemical catalysis

Inventive Principle:

Principle #28Mechanics substitution (Replace mechanical system)

3Adaptability or versatility

If conventional nitrile activation methods are used, then functional group conversion is achieved, but the method is not suitable for industrial applications due to harsh conditions

Engineering Contradiction:

Improvefunctional group conversionVSAvoidindustrial applicability

Core Design Contradiction:

Adaptability or versatilityVSEase of operation

Solution Approach 1:

The operational parameters are optimized for industrial applicability by changing from harsh conditions (strong acids, high temperature) to mild conditions (room temperature, neutral pH). This makes the process easier to operate and more suitable for industrial applications while maintaining the ability to convert nitrile to hydroxamic acid

Inventive Principle:

Principle #35Parameter changes

Solution Approach 2:

The cobalt porphyrin catalyst serves as an intermediary that enables versatile functional group conversion under industrially-friendly mild conditions, resolving the contradiction between adaptability and ease of operation

Inventive Principle:

Principle #24Intermediary (Mediator)

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 allows for the safe and selective delivery of the hydroxymate functional group to cancer cells, providing a potential pro-drug for anticancer treatment while being environmentally friendly and industrially feasible.

Implementation Method 1

A peroxocobalt complex is used to convert nitrile functional groups into hydroxamic acid functional groups at room temperature and normal pressure

Methodology Applied

Scientific EffectCatalysis: Catalysis

Implementation Method 2

The released hydroxymate group has chelating properties so that it can bind to zinc in the active site of the matrix metalloproteinase

Methodology Applied

Scientific EffectChelation:

Data Source

PatentUS10399928B2Method of converting a nitrile functional group into a hydroxamic functional group by using a peroxocobalt complex at room temperature and normal pressure

Publication Date: 2019.09.03 DAEGU GYEONGBUK INSTITUTE OF SCIENCE AND TECHNOLOGY

AI summary

The method of the present invention for converting a nitrile functional group into a hydroxamic acid functional group can be easily performed at room temperature and under normal pressure by using a peroxocobalt complex. The final hydroxamic acid functional group produced through the intermediate Hydroximatocobalt (III) compound or the derivative comprising the same has been known to be able to inhibit the growth of cancer cells, so that the conversion method of the present invention can be applied to the preparation of a pro-drug for anticancer treatment.