Metal ion effects on the asymmetric dimerization of 1-phenyl-3,4-dimethylphosphole

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

“…80°) and is indicative of the elevated levels of strain at the bridge [34]. This bridgehead angle was also similar to that observed for the cycloadduct obtained from the asymmetric dimerization of DMPP in the presence of the platinum(II) analogue of the same template [35]. The bridgehead C-P-C angle is also expectedly smaller than those seen in complexes obtained from the cycloaddition of diphenylvinylphosphine with DMPP@S (ca.…”

The Continuing Development of the Chemistry of Phospholes

“…The coordinated phosphole has also been reacted with another mole of the phosphole acting as the dienophile to give, after decomplexation, the novel form of the phosphole 168 with exo-fusion of the two rings, in optically active form (S at the bridging P, R at the 2-phospholene P) [72]. Simple thermal dimerization of (52) phospholes leads to endo-fused 7-anti products as noted previously.…”

“…The metals with pertinent references given in parentheses are: Co [118], Cr [78], Fe [8,9,28,34,42,74,119,120,121,122,123], Ga [8], Ge [124], Hf [125], Ir [126,127], Mn [28,74,128,129,130,131], Mo [132], Nd [9], Pb [124], Pd [11,13,17,28,66,67,68,69,70,71,133,134,135,136,137,138,139], Pt [11,28,69,72,133,134,…”

Design, syntheses and applications of chiral transition metal complexes bearing phosphorus-containing ligands

“…complexes 66 and 79) have exhibited differences in reactivities and stereoselectivities. [92] As such, by systematically tuning and modifying the steric and electronic properties of the complexes, they will be applicable across a broad spectrum of asymmetric transformation reactions.…”