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Lithium bromide: an inexpensive and efficient catalyst for imine hydroboration with pinacolborane at room temperature†
Hanbi Kim,Hyun Tae Kim,Ji Hye Lee,Hyonseok Hwang,Duk Keun An
RSC Advances Pub Date : 09/17/2020 00:00:00 , DOI:10.1039/D0RA06023B
Abstract

An efficient protocol for the hydroboration of imines is reported. Lithium halide salts are effective catalysts to convert aldimines and ketimines to their corresponding amines. Here, we report excellent isolated yield of secondary amines (>95%) using 3 mol% lithium bromide in THF at room temperature. In addition, DFT calculations for a plausible reaction pathway are reported.

Graphical abstract: Lithium bromide: an inexpensive and efficient catalyst for imine hydroboration with pinacolborane at room temperature
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