title: Asymmetric Catalytic Synthesis of Thiochromenes via an Acyl Transfer-Initiated Cascade.
abstract: A novel, reagent-free catalytic transformation of α,β-unsaturated thioesters into 2-substituted thiochromenes has been developed, with carbon dioxide as the only byproduct. Amidine-based catalysts, particularly homobenzotetramisole and its analogues, achieve high enantioselectivities and yields in this process.
authors.affiliation: Department of Chemistry, Washington University , Campus Box 1134, One Brookings Drive, Saint Louis, Missouri 63130, United States.
authors.forename: Nicholas A
authors.initials: NA
authors.lastname: Ahlemeyer
authors.affiliation: Department of Chemistry, Washington University , Campus Box 1134, One Brookings Drive, Saint Louis, Missouri 63130, United States.
authors.forename: Vladimir B
authors.initials: VB
authors.lastname: Birman