Tautomerization of 2,6-lutidines in the presence of B(C6F5)3 using catecholborane as a precatalyst

2,6-Lutidine and its derivatives in the presence of B(C6F5)(3) undergo tautomerization to yield the corresponding enamine center dot B(C6F5)(3) adducts when catecholborane is applied as a precatalyst. This reaction provides a straightforward way for benzylic C-H borylation of lutidines.