Rhodium- or Copper-Catalysed CH-Insertion of Carbenoids into Dihydroaromatic Compounds and Acyclic 1,4-Dienes
作者:Gerhard Hilt、Fabrizio Galbiati
DOI:10.1055/s-2006-942512
日期:2006.11
A straightforward reaction sequence consisting of a cobalt-catalysed Diels-Alder reaction for the generation of dihydro-aromatic compounds and a rhodium- or alternatively a copper-catalysed CH-insertion reaction of carbenoids from diazo esters generates highly substituted benzene derivatives. When acyclic 1,4-dienes are synthesised by a cobalt-catalysed 1,4-hydrovinylation reaction, the rhodium-catalysed
Regioselective Carbene Insertion on Polysubstituted Dihydroaromatic Compounds
作者:Gerhard Hilt、Fabrizio Galbiati
DOI:10.1021/ol060739z
日期:2006.5.1
[reaction: see text] The rhodium-catalyzed CH-insertion reaction of diazo ester derivatives into dihydroaromatic compounds was expanded to the application of various polysubstituted and functionalized 1,4-dienes generated from a cobalt-catalyzed Diels-Alder reaction. The highlyregioselective CH-insertion process produces after DDQ oxidation polysubstituted, polyfunctionalized aromatic compounds in
An efficient cobalt catalyst for the neutral Diels–Alder reaction of acyclic 1,3-dienes with internal alkynes
作者:Gerhard Hilt、Tobias J Korn
DOI:10.1016/s0040-4039(01)00289-1
日期:2001.4
type reactions of internal alkynes with substituted 1,3-dienes is described. The regiochemistry for the dihydroaromatic products of reactions of isoprene with unsymmetrical reaction partners (2-alkynes and 1-trimethylsilyl-1-hexyne) is investigated. The dihydroaromatic reaction products are easily oxidised electrochemically to the corresponding functionalised durene and isodurenederivatives.
Enantio- and Regioselective Ir-Catalyzed Hydrogenation of Di- and Trisubstituted Cycloalkenes
作者:Byron K. Peters、Jianguo Liu、Cristiana Margarita、Wangchuk Rabten、Sutthichat Kerdphon、Alexander Orebom、Thomas Morsch、Pher G. Andersson
DOI:10.1021/jacs.6b07291
日期:2016.9.14
carbons away from the olefin. Substrates having functionalities such as carboxyl groups, alcohols, or heterocycles in the vicinity of the C═C bond were hydrogenated in high enantiomeric excess (up to >99% ee). The hydrogenation was also found to be regioselective, and by controlling the reaction conditions, selective hydrogenation of one of two trisubstituted olefins can be achieved. Furthermore, trisubstituted