The synthesis and crystal structure of the title compounds are reported. The corresponding tetramethylmenthyl derivative was co-crystallized with triphenylphosphineoxide, ie. as [Rh{C5Me4-(menthyl)}Cl2]2·2[(C6H5)3PO]. Both compounds are active hydrogenation catalysts in the presence of Et3N but with prochiral alkenes the enantioselectivity is low (i.e. ≤ 13% ee).
Chiral cyclopentadienyl hydrogenation catalysts: crystal structures of rhodium complexes [Rh(C5R4R*)Cl2]2 (R = H, R* = neomenthyl; R = Me, R* menthyl) / e. Cesarotti. - In: JOURNAL OF ORGANOMETALLIC CHEMISTRY. - ISSN 0022-328X. - 1991:1-2(1991), pp. 273-289. [10.1016/0022-328X(91)86062-U]
Chiral cyclopentadienyl hydrogenation catalysts: crystal structures of rhodium complexes [Rh(C5R4R*)Cl2]2 (R = H, R* = neomenthyl; R = Me, R* menthyl)
E. CesarottiPrimo
1991
Abstract
The synthesis and crystal structure of the title compounds are reported. The corresponding tetramethylmenthyl derivative was co-crystallized with triphenylphosphineoxide, ie. as [Rh{C5Me4-(menthyl)}Cl2]2·2[(C6H5)3PO]. Both compounds are active hydrogenation catalysts in the presence of Et3N but with prochiral alkenes the enantioselectivity is low (i.e. ≤ 13% ee).
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