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Title: Synthesis and asymmetric reactivity of enantiomerically pure cyclopentadienylmetal complexes derived from the chiral pool

Journal Article · · Organometallics; (United States)
DOI:https://doi.org/10.1021/om00094a015· OSTI ID:7256341

Starting from pulegone, camphor, and tartrate, three chiral cyclopentadienes were prepared efficiently. Metalation with Co/sub 2/(CO)/sub 8/ and TiCl/sub 3/ resulted in new chiral and enantiomerically pure substituted cyclopentadienyldicarbonylcobalt and -titanocene complexes. The latter were used in the quantitative catalytic asymmetric hydrogenation of 2-phenyl-1-butene in up to 34% optical yield. The former allowed the first asymmetric (2 + 2 + 2) cycloadditions promoted by chiral cyclopentadienylcobalt complexes to be observed.

Research Organization:
Univ. of California, Berkeley (USA)
OSTI ID:
7256341
Journal Information:
Organometallics; (United States), Vol. 7:4
Country of Publication:
United States
Language:
English