Regio- and stereoselective ring-opening reactions of chiral substituted spiro[2.4]hepta-4,6-dienes: A new, simple, and versatile approach to the synthesis of optically active bidentate cyclopentadienyl-phosphine ligands. X-ray crystal structure of (S)-[Rh(eta(2)-C2H4)(eta(5)-C5H4CH2CHPhPPh2-kappa P)]
S. Ciruelos et al., Regio- and stereoselective ring-opening reactions of chiral substituted spiro[2.4]hepta-4,6-dienes: A new, simple, and versatile approach to the synthesis of optically active bidentate cyclopentadienyl-phosphine ligands. X-ray crystal structure of (S)-[Rh(eta(2)-C2H4)(eta(5)-C5H4CH2CHPhPPh2-kappa P)], ORGANOMETAL, 19(12), 2000, pp. 2240-2242
The ring-opening reaction of(S)-1-phenylspiro[2,4]hepta-4,6-diene with LiPP
h2 proceeds with full regio- and stereoselectivity, taking place at phenyl-
substituted carbon and with complete inversion of the configuration at the
stereogenic center, yielding (S)-[Li-(C5H4CH2CHPhPPh2)]. Optically active c
omplexes of rhenium, rhodium, zirconium, and iron with this new chiral bide
ntate ligand have been prepared; additionally, the X-ray crystal structure
of (S)-[Rh(eta(2)-C2H4)(eta(5)-C5H4-CH2CHPhPPh2-kappa P)] is reported.