Synthesis and functionalization of N-sulfinyl imines: sonogashira reaction and copper-catalyzed azide-alkyne cycloaddition - Souza, Frederico Bernardes de; Vasconcelos, Stanley Nunes Siqueira; Reis, Joel Savi dos; Pimenta, Daniel Carvalho; Stefani, Hélio Alexandre (Tetrahedron Letters, 2017)