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Lactones 17 : synthesis of bicyclic lactones with the methyl-or gemdimethylcyclopropane system.
Autorzy
Rok wydania
2005
Czasopismo
Numer woluminu
79
Strony
981-993
Kolekcja
Język
Angielski
Typ publikacji
Artykuł
A new method of synthesis of bicyclic gamma-lactones with the methyl- or gem-dimethylcyclopropane system from gamma,delta unsaturated esters is described. The reaction of gamma-halo delta- lactones with DBU is the key step of this synthesis. The mechanism of the dehydrohalogenation- cyclization process of gamma-halo-delta-lactones is proposed. The structures of products were confirmed by both spectroscopic and crystallographic methods.
Słowa kluczowe
gamma-halo-delta-lactones, delta-halo-gamma-lactones, cyclization, DBU, elimination
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