Rhodium catalysed cyclopropenation of acetylenes
نویسندگان
چکیده
منابع مشابه
Rhodium-catalysed substitutive arylation of cis-allylic diols with arylboroxines.
Substitutive arylation of cis-allylic diols occurs upon treatment with arylboroxines in the presence of a rhodium(I) catalyst; the reaction proceeds through the addition of an intermediate arylrhodium(I) species across the carbon-carbon double bond and subsequent beta-oxygen elimination.
متن کاملA convergent rhodium-catalysed asymmetric synthesis of tetrahydroquinolines.
Rh-catalysed conjugate additions of 2-aminophenyl boronic acid derivatives were exploited in diastereoselective and asymmetric syntheses of tetrahydroquinolines. In both cases, combinatorial variation of the substitution of the tetrahydroquinoline ring system was possible.
متن کاملRhodium-catalysed cyclisation reaction of allenynes with arylboronic acids.
Allenynes having malonate-based tethers reacted with arylboronic acids in the presence of a rhodium(I) catalyst to sequentially form three carbon-carbon bonds, and arylated bicyclic skeletons were constructed in a stereoselective manner.
متن کاملUnravelling the reaction path of rhodium-MonoPhos-catalysed olefin hydrogenation.
The mechanism of the asymmetric hydrogenation of methyl (Z)-2-acetamidocinnamate (mac) catalysed by [Rh(MonoPhos)(2)(nbd)]SbF(6) (MonoPhos: 3,5-dioxa-4-phosphacyclohepta[2,1-a:3,4-a']dinaphthalen-4-yl)dimethylamine) was elucidated by using (1)H, (31)P and (103)Rh NMR spectroscopy and ESI-MS. The use of nbd allows one to obtain in pure form the rhodium complex that contains two units of the liga...
متن کاملRhodium-catalysed arylative annulation of 1,4-enynes with arylboronic acids.
The rhodium(I)-catalysed arylative annulation of 1,4-enynes with arylboronic acids was investigated. The reaction was found to proceed via an addition-1,4-rhodium migration-addition sequence, affording the corresponding 1,1-disubstituted 3-(arylmethylene)indanes.
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ژورنال
عنوان ژورنال: Tetrahedron Letters
سال: 1978
ISSN: 0040-4039
DOI: 10.1016/s0040-4039(01)94511-3