Structure and Additive-free Transamidation of Planar N-Cyano Amides

Area of Science:

• Organic Chemistry
• Synthetic Chemistry

Background:

• Traditional amide transamidation often requires catalysts or extreme conditions.
• Developing milder synthetic routes is crucial for efficient chemical transformations.

Purpose of the Study:

• To present a facile transamidation of N-cyano amides with amines.
• To achieve this transformation under mild, additive-free conditions at ambient temperature.

Main Methods:

• Utilized N-cyano amides and various amines.
• Employed ambient temperature reaction conditions.
• Performed crystal analysis and Density Functional Theory (DFT) studies.

Main Results:

• Achieved facile transamidation of N-cyano amides with amines without additives.
• Crystal analysis revealed N-cyano amides favor trans conformation with reduced double bond character.
• DFT studies indicated the reaction mechanism involves direct amine attack on the carbonyl moiety.

Conclusions:

• Developed a straightforward and efficient method for N-cyano amide transamidation.
• The study elucidates the structural and electronic properties influencing the reaction.
• This work offers a valuable alternative to conventional amide synthesis methods.