# Platinum-Catalyzed Regio- and Stereoselective Diboration of Allenes by 1,8-Diaminonaphthalene-Protected Diboronic Acid (B2(dan)2)

## TL;DR

A new platinum-catalyzed method for selectively adding boron atoms to allenes is developed, allowing for versatile chemical transformations.

## Contribution

A regio- and stereoselective diboration method using Pt and B2(dan)2 is introduced for allene substrates.

## Key findings

- The reaction works for various allenes, including 1-aryl and 1,1-disubstituted types.
- The diboration products allow chemoselective transformations due to differing reactivities of the boryl groups.

## Abstract

We report a regio-
and stereoselective diboration of
the terminal
CC bond of allenes by B2(dan)2 (dan
= naphthalene-1,8-diaminato) in the presence of a Pt catalyst. This
reaction is applicable to a broad range of substrates, including 1-arylallenes
and 1,1-disubstituted allenes. The two boryl groups in the product
exhibit distinct reactivities, enabling chemoselective transformations.