Asymmetric synthesis of a P-chiral heteroditopic ligand via chiral metal template promoted cycloaddition between 3,4-dimethyl-1-phenylphosphole and its sulfonated analog

Hemilability and regioselectivity in palladium and platinum complexes of dppm(E) [E = O, S, Se] ligands

“…One might also note that an example of a complex with an S-donor trans to C was also found for a polycyclic P^P]S variant of 1. [19] Thus, as observed in earlier arguments regarding hard-soft effects, sometimes the opposite donor is preferred and the selectivity is antisymbiotic. This suggests that some revision of the "rule of thumb for isomeric preferences" is in order.…”

Three types of reactions with intramolecular five-membered ring compounds in organic synthesis

“…By using bulky chiral cyclo-metalated compounds, some asymmetric Diels-Alder reactions proceed at the metal [84][85][86][87][88]. For example, the organopalladium complex containing the (S)-form of ortho-palladated (1-(dimethylamino)ethyl)-naphthalene has been used successfully as a chiral template to promote asymmetric cyclo-addition reactions between coordinated 3,4-dimethyl-1-phenylphosphole 27-1 and a dienophile (N,N-dimethy lacrylamide or styrene) via an endo pathway, that proceed to give the compound 27-2 as shown in Eq.…”