The reaction of 7‐alkyl(allyl,phenyl)‐1,3,5‐cycloheptatrienes with alkynes and allenes, catalyzed by the two‐component Ti(acac)2Cl2–Et2AlCl system, resulting in the formation of substituted bicyclo[4.2.1]nona‐2,4‐dienes and bicyclo[4.2.1]nona‐2,4,7‐trienes in up to 90 % yield, was accomplished. The structures of the obtained compounds were confirmed by X‐ray diffraction and by 1H and 13C NMR spectroscopic analysis.
Titanium-Catalyzed [6 + 2]-Cycloaddition of Alkynes and Allenes to 7-Substituted 1,3,5-Cycloheptatrienes -[furnishing substituted bicyclo[4.2.1]nona--2,4-dienes or -2,4,7-trienes, respectively]. -(D'YAKONOV*, V. A.; KADIKOVA, G. N.; KOLOKOL'TSEV, D. I.; RAMAZANOV, I. R.; DZHEMILEV, U. M.; Eur. J. Org. Chem. 2015, 20, 4464-4470, http://dx.doi.org/10.1002/ejoc.201500442 ; Inst. Petrochem. Catal., Russ. Acad. Sci., Ufa 450075, Russia; Eng.) -Toeppel 46-093
scite is a Brooklyn-based organization that helps researchers better discover and understand research articles through Smart Citations–citations that display the context of the citation and describe whether the article provides supporting or contrasting evidence. scite is used by students and researchers from around the world and is funded in part by the National Science Foundation and the National Institute on Drug Abuse of the National Institutes of Health.