(−)-Sparteine-Mediated α-Lithiation of N-Boc-N-(p-methoxyphenyl)benzylamine: Enantioselective Syntheses of (S) and (R) Mono- and Disubstituted N-Boc-benzylamines
(−)-Sparteine-Mediated α-Lithiation of <i>N</i>-Boc-<i>N</i>-(<i>p</i>-methoxyphenyl)benzylamine: Enantioselective Syntheses of (<i>S</i>) and (<i>R</i>) Mono- and Disubstituted <i>N</i>-Boc-benzylamines