Masked alcohols are particularly appealing as directing groups because of the ubiquity of hydroxy groups in organic small molecules.H erein, we disclose ag eneral strategy for aliphatic g-C(sp 3 )ÀHf unctionalization guided by am asked alcohol. Specifically,w ed etermine that sulfamate ester derived nitrogen-centered radicals mediate 1,6-hydrogenatom transfer (HAT) processes to guide g-C(sp 3 ) À Hchlorination. This reaction proceeds through al ight-initiated radical chain-propagation process and is capable of installing chlorine atoms at primary,secondary,and tertiary centers.
Angewandte ChemieCommunications 297