Benzene ring assembly promoted by a camphor derived palladium complex

…, FMT Almeida, AM Galvão, AJL Pombeiro

Index: Carvalho, M. Fernanda N.N.; Almeida, Fernanda M.T.; Galvao, Adelino M.; Pombeiro, Armando J.L. Journal of Organometallic Chemistry, 2003 , vol. 679, # 1 p. 143 - 147

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Abstract

Trans-[PdCl2L2](1, L= 3-NNMe2C10H14O), under mild reaction conditions, acts as a catalyst for the cyclic trimerization of alkynes. The best performance is achieved for the reaction with PhC CMe that affords 1, 3, 5-trimethyl-2, 4, 6-triphenyl benzene with high activity and selectivity (ca. 99%). As a general trend the catalytic activity is higher for internal (PhC CMe, PhC CPh) than for terminal alkynes (HC CPh, HC CtBu, HC CCO2Me) ...

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