Abstract Radical addition to enamines using Bu 3 SnH as reducing agent are reported (Schemes 2 and 4). The diastereoselectivity of these reactions was examined in different systems (Tables 1 and 2). Enamines derived from cyclic ketones such as cyclohexanone were alkylated with high diastereoselectivity with preferential formation of the cis- disubstituted cycloalkanes. In acyclic systems such as enamines derived from ...
