New aromatic annulation reaction via a C14 enaminone synthon:: synthesis of 'terpenoid-like chalcones'

Diverse functionalized synthons from a new enaminone are reported. These synthons were easily obtained in a one pot process starting from a compound derived from beta-ionone. A new annulation reaction of this C-14 compound with several anions led to new 'terpenoid-like' chalcones. (c) 2005 Elsevier Ltd. All rights reserved.