Aza-Morita–Baylis–Hillman-type reactions: highly enantioselective organocatalytic addition of unmodified α,β-unsaturated aldehydes to N-Boc protected imines

Highly enantioselective catalytic routes to Boc protected aza-Morita–Baylis–Hillman-type products are presented. The organocatalytic asymmetric reactions between unmodified α,β-unsaturated aldehydes and N-Boc protected aryl imines proceed with excellent chemo- and enantioselectivity to give the corresponding compounds in good yields with 97–99% ee.