Kawaguchi Y, Nagata A, Kurokawa K, Yokosawa H, Mukai C. Rhodium(I)-Catalyzed Ring-Closing Reaction of Allene-Alkene-Alkynes: One-Step Construction of Tricyclo[6.4.0.0
2,6 ] and Bicyclo[6.3.0] Skeletons from Linear Carbon Chains.
Chemistry 2018. [PMID:
29536578 DOI:
10.1002/chem.201801239]
[Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Abstract
Treatment of dodecatrienyne derivatives with [RhCl(CO)2 ]2 in refluxing toluene effected the cycloisomerization to produce tricyclo[6.4.0.02,6 ]dodecadienes. The one-carbon shortened undecatrienyne derivatives, however, afforded bicyclo[6.3.0]undecatriene derivatives instead of tricyclic compounds, the latter of which are well known as a basic skeleton of naturally occurring octanoids. On the basis of two experiments with deuterated substrates, a plausible reaction mechanism for the construction of these products was proposed.
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