# Bromination Functionalization of Diazo Compounds with CBr4 via Convergent Paired Electrolysis

## TL;DR

This paper introduces a new electrochemical method to create α-bromo phosphonates using diazo compounds and CBr4 under mild conditions.

## Contribution

The first example of direct anodic oxidation of diazos coupled with in situ-generated nucleophiles via convergent paired electrolysis.

## Key findings

- The method achieves up to 96% yields of α-bromo phosphonates.
- It uses mild conditions and shows good substrate compatibility.
- The reaction is scalable and introduces a new electrochemical mode for diazo compounds.

## Abstract

An electrochemical bromination of diazo compounds with
CBr4 as a bromine source via convergent paired electrolysis
has
been developed, which affords α-bromo phosphonates as products
in up to 96% yields. This work represents the first example of direct
anodic oxidation of diazos to couple with an in situ-generated nucleophile from the cationic reduction of CBr4 by using CH2Cl2 as a hydrogen source. This
reaction features mild conditions, good substrate compatibility, and
scale-up applicability, which represents a new electrochemical reaction
mode of diazo compounds and also provides easy access to α-bromo
phosphonates.