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Product Diversity in the Reaction of [(norbornadiene){CpP( i Pr) 2 }Rh] with Alkyl Iodides
Author(s) -
Ortega Esteban,
Kleigrewe Nina,
Kehr Gerald,
Erker Gerhard,
Fröhlich Roland
Publication year - 2006
Publication title -
european journal of inorganic chemistry
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.667
H-Index - 136
eISSN - 1099-0682
pISSN - 1434-1948
DOI - 10.1002/ejic.200600347
Subject(s) - chemistry , norbornadiene , rhodium , dimer , alkyl , medicinal chemistry , crystal structure , reagent , stereochemistry , phosphonium salt , yield (engineering) , oxidative addition , salt (chemistry) , crystallography , catalysis , organic chemistry , materials science , metallurgy
The reagents [(CpPR 2 )Li] [R = i Pr ( 2b ), cyclohexyl ( 2c )] react with [(nbd)RhCl] (nbd = norbornadiene) dimer [( 1a ) 2 ] to yield the respective mononuclear complexes [(nbd)Rh(CpPR 2 )] ( 3b , c ). Subsequent treatment of 3b with a large excess of MeI led to the formation of the stable organometallic phosphonium salt [(nbd)Rh{CpP( i Pr) 2 Me}]I ( 4b ). The analogous reaction of 3b with the slightly more bulky EtI or n PrI resulted in the formation of the dinuclear [μ‐CpP( i Pr) 2 ]‐bridged dirhodium complex [(nbd)Rh{CpP( i Pr) 2 }Rh(nbd)I] ( 5b ) and the corresponding ylides C 5 H 4 P( i Pr) 2 R 1 [R 1 = Et ( 6b ), n Pr ( 6c )]. The rhodium complexes 3b , 4a and 5b were characterised by X‐ray crystal‐structure analyses. (© Wiley‐VCH Verlag GmbH & Co. KGaA, 69451 Weinheim, Germany, 2006)