... Diagonal 643, E-08028 Barcelona, Spain, Department of Organic Chemistry “A. Mangini”, University of Bologna, Viale Risorgimento 4, I ... J. Org. ... selectivity of the 1,3-dipolar cycloaddition, we synthesized the α-phenylthioacrylate derived from racemic N-phenylpantolactam, (±)-9 ...