《Catalyst control over sixfold stereogenicity》 was written by Wu, Xingxing; Witzig, Reto M.; Beaud, Rodolphe; Fischer, Christian; Haussinger, Daniel; Sparr, Christof. Electric Literature of C38H28O4P2This research focused ontrialkenyl pyrroloanthracene rhodium catalyst regioselective enantioselective cycloaddition. The article conveys some information:
The sixfold stereogenicity by stereoselective catalysis was reported. By controlling a configurationally stable stereogenic axis with six large rotational barriers, a catalytic [2 + 2 + 2] cyclotrimerization selectively governed the formation of one of six stereoisomers with up to 0:0:2:98:0:0 stereocontrol. Moreover, the stereoselectivity was redirectable by stereodivergent catalysis, providing four of the six stereoisomers as major stereoisomers. The underpinnings of conformational anal. and stereoselective catalysis was thereby conceptually reunited. Novel mol. architectures featuring distinct chem. topologies and unexplored chem. designs were anticipated from catalyst control over higher-order stereogenicity. In the experimental materials used by the author, we found (S)-5,5′-Bis(diphenylphosphino)-4,4′-bi-1,3-benzodioxole(cas: 210169-54-3Electric Literature of C38H28O4P2)
(S)-5,5′-Bis(diphenylphosphino)-4,4′-bi-1,3-benzodioxole(cas: 210169-54-3) is a chelating ligand used to prepare coordination complex catalysts, such as its use in Pd catalysts for the enantioselective synthesis of spiro- or benzofused hetereocycles with exocyclic olefins via enantioselective intramolecular dearomative Heck reaction of indoles, benzofurans, pyrroles and furans.Electric Literature of C38H28O4P2
Referemce:
Phosphine ligand,
Chiral phosphines in nucleophilic organocatalysis