Synthesis and characterization of novel 1,3-selenazine derivatives. BF3·Et2O-assisted reaction of primary selenoamides with α,β-unsaturated ketones

Abstract

Reaction of primary selenoamides with α,β-unsaturated ketones in the presence of BF₃·Et₂O provided 5,6-dihydro-4H-1,3-selenazine derivatives in high yields. Among the 1,3-selenazine diastereomers bearing two asymmetric carbons at the C4 and C6 positions, the cis form is predominant.