... and benzyl groups of the auxiliary, the reaction proceeds via intermediate IV-(S) (Figure 1. figure ... (1) (a) Orru, RVA; Groenendaal, B.; van Heyst, J.; Hunting, M ... Orru, Romano VA; Groenendaal, Bas; van Heyst, Jeroen; Hunting, Mark; Wesseling, Claudia; Schmitz, Robert F.; Mayer ...