TY - JOUR
T1 - Enantiomerically Pure Copper(I) and Zinc(II) Complexes of a Novel C3-Symmetric Polypyrazole Ligand
AU - Tokar, Christopher J.
AU - Kettler, Peter B.
AU - Tolman, William B
PY - 1992/8/1
Y1 - 1992/8/1
N2 - We report the synthesis and characterization of the first enantiomerically pure C3-symmetric polypyrazole ligand, tris[(4S,7R)-7,8,8-trimethyl-4,5,6,7-tetrahydro-4,7-methano-2-indazolyl] phosphine oxide (OP-(camphpz)3, 2). The new optically active complexes [(η3-2)Cu(CH3CN)]BF4 (3), [(η3-2)Cu(X)] (X = Cl (4), X = O3SCF3 (5)), and [(η2-Zncl2] (6) were prepared. Complex 3 catalyzed the cyclopropanation of styrene with ethyl and 2,6-di-tert-butyl-4-methylphenyl diazoacetates with ee's of up to 60%.
AB - We report the synthesis and characterization of the first enantiomerically pure C3-symmetric polypyrazole ligand, tris[(4S,7R)-7,8,8-trimethyl-4,5,6,7-tetrahydro-4,7-methano-2-indazolyl] phosphine oxide (OP-(camphpz)3, 2). The new optically active complexes [(η3-2)Cu(CH3CN)]BF4 (3), [(η3-2)Cu(X)] (X = Cl (4), X = O3SCF3 (5)), and [(η2-Zncl2] (6) were prepared. Complex 3 catalyzed the cyclopropanation of styrene with ethyl and 2,6-di-tert-butyl-4-methylphenyl diazoacetates with ee's of up to 60%.
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U2 - 10.1021/om00044a001
DO - 10.1021/om00044a001
M3 - Article
AN - SCOPUS:0001364254
SN - 0276-7333
VL - 11
SP - 2737
EP - 2739
JO - Organometallics
JF - Organometallics
IS - 8
ER -