New musk odorants: (3E)-4-(2′-alkyl-5′,5′- dimethylcyclopent-1′-enyl)but-3-en-2-ones and (3E)-1-acetyl-3-alkylidene- 4,4-dimethylcyclohexenes

Article abstract of DOI:10.1002/ejoc.200800644

Four new representatives, 18, 23, 29, and 32, of the young family of dienone musks were synthesized by two general routes. The first five-step synthetic route leading to (3E)-4-(2′-alkyl-5′,5′- dimethylcyclopent-1′-enyl)but-3-en-2-ones commenced with the