γ,δ,ε-C(sp(3))-H Functionalization through Directed Radical H-Abstraction.

Area of Science:

• Organic Chemistry
• Synthetic Chemistry

Background:

• Selective functionalization of C-H bonds is crucial for efficient molecular synthesis.
• Aliphatic amides present challenges for regioselective modification.

Purpose of the Study:

• To develop a new method for selective C-H functionalization of aliphatic amides.
• To demonstrate the utility of this method in synthesizing valuable chemical compounds.

Main Methods:

• Directed radical 1,5 and 1,6 H-abstractions for selective functionalization at γ- and δ-positions.
• Interception of lactams with N-iodosuccinimide and trimethylsilyl azide for further C-H functionalization.

Main Results:

• Achieved selective double and triple C-H functionalizations at γ-, δ-, and ε-positions of aliphatic amides.
• Demonstrated the conversion of simple alkyl chains into complex amino alcohols and allylic amines.

Conclusions:

• This work presents a powerful new strategy for C-H functionalization in aliphatic amides.
• The developed methodology offers a versatile route to synthetically important amino alcohols and allylic amines.