Facile Carbolithiation of Bent Alkyne without Catalyst. Tandem Route to Dibenzo[<i>b</i>,<i>f</i>]pentalenes from Dibenzocyclooctadiyne
作者:Govindarajulu Babu、Akihiro Orita、Junzo Otera
DOI:10.1246/cl.2008.1296
日期:2008.12.5
Nucleophilic addition of RLi to a triple bond of dibenzocycloocta[a,e]diyne provides dibenzo[b,f]pentalene motif through trans-annulation of the resulting vinyllithium. Dibenzopentalene anion thus formed reacts with various electrophiles such as aldehydes, alkyl halides, acid halide, and Me3SiCl to give the corresponding products.