Preparation from Alkanes RH — RX

Free-radical halogenation of an alkane (Br2 + light) will afford as the major product the bromide arising from the most stable radical intermediate.The rate of reaction varies by the ease of removal of the hydrogen atom (and the stability of the resulting radical intermediate), with 3°, aUylic and benzylic bromides being formed the fastest. N-Bromosuccinimide (NBS) is a convenient source 

Introduction to Strategies for Organic Synthesis, First Edition. Laurie S. Starkey. 2012 John Wiley Sons, Inc. Published 2012 by John Wiley Sons, Inc. 

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