Tandem transformations and multicomponent reactions utilizing alcohols following dehydrogenation strategy

Area of Science:

• Green chemistry and sustainable synthesis.
• Organic synthesis and catalysis.
• Development of novel chemical transformations.

Background:

• Traditional synthesis often uses hazardous reagents and generates waste.
• Alcohols offer a greener alternative for forming key chemical bonds.
• Borrowing hydrogen and acceptorless dehydrogenative coupling are key catalytic principles.

Purpose of the Study:

• To review advancements in tandem and multi-component reactions utilizing alcohols.
• To showcase the synthesis of alkylated molecules and N-heterocycles.
• To emphasize atom-economical and sustainable synthetic strategies.

Main Methods:

• Review of literature on tandem transformations of nitro, nitrile, and azide functionalities.
• Summary of multi-component reactions employing alcohols as reagents.
• Focus on borrowing hydrogen and acceptorless dehydrogenative coupling strategies.

Main Results:

• Efficient synthesis of alkylated imines, amines, and amides.
• Formation of diverse N-heterocycles including pyrroles, pyridines, and quinoxalines.
• Demonstration of atom-economical pathways using simple substrates.

Conclusions:

• Alcohols are effective and sustainable reagents for constructing complex molecules.
• Tandem and multi-component reactions offer powerful tools for efficient synthesis.
• These methods represent a significant step towards greener chemical manufacturing.