caa a22 4500 465775454 CHVBK 20180323111940.0 cr unu---uuuuu 170327e19901201xx s 000 0 eng 10.1007/BF01040780 doi (NATIONALLICENCE)springer-10.1007/BF01040780 Synthesis, crystal structure and reaction of differentially ring-substituted titanocene dichlorides [Elektronische Daten] [Qian Yanlong, Li Guisheng, Chen Weichun, Li Bihua, Jin Xianglin] Summary: A new class of differentially ring-substituted titanocene dichlorides of the type Cp′Cp″TiCl2 has been prepared by reacting Cp″M (M=Li, K; Cp″=RC5H4) with Cp′TiCl3 (Cp′=MeOCH2CH2C5H4). The crystal structure of Cp′(PhCEt2C5H4)TiCl2, the first example, has been determined by x-ray diffraction and refined to a final R factor of 0.0532 for 2304 reflections. The crystal belongs to the monoclinic space group C 2h 5 −P21/c with unit cell parameters:a 10.205(6),b 13.003(5),c 17.591(9) Å, β 101.91(4)°, V=2284 Å3, Z=4 and Dc=1.32 g/cm−3. Replacement of one neomenthyl in bis(neomenthyl-cyclopentadienyl)titanium dichloride by one MeOCH2CH2 — raises the e.e. value from 5.8% to 11.2% in the catalytic asymmetric hydrogenation of 2-phenyl-1-butene. Chapman and Hall Ltd, 1990 Yanlong Qian Shanghai institute of Organic Chemistry, Academia Sinica, 345 Lingling Lu, 200032, Shanghai, PR China aut Guisheng Li Shanghai institute of Organic Chemistry, Academia Sinica, 345 Lingling Lu, 200032, Shanghai, PR China aut Weichun Chen Department of Chemistry, Heilongjiang University, Haerbin, PR China aut Bihua Li Department of Chemistry, Heilongjiang University, Haerbin, PR China aut Xianglin Jin Department of Chemistry, Beijing University, Beijing, PR China aut Transition Metal Chemistry Kluwer Academic Publishers 15/6(1990-12-01), 478-482 0340-4285 15:6<478 1990 15 11243 https://doi.org/10.1007/BF01040780 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/BF01040780 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Yanlong Qian Shanghai institute of Organic Chemistry, Academia Sinica, 345 Lingling Lu, 200032, Shanghai, PR China aut NATIONALLICENCE 700 1- Guisheng Li Shanghai institute of Organic Chemistry, Academia Sinica, 345 Lingling Lu, 200032, Shanghai, PR China aut NATIONALLICENCE 700 1- Weichun Chen Department of Chemistry, Heilongjiang University, Haerbin, PR China aut NATIONALLICENCE 700 1- Bihua Li Department of Chemistry, Heilongjiang University, Haerbin, PR China aut NATIONALLICENCE 700 1- Xianglin Jin Department of Chemistry, Beijing University, Beijing, PR China aut NATIONALLICENCE 773 0- Transition Metal Chemistry Kluwer Academic Publishers 15/6(1990-12-01), 478-482 0340-4285 15:6<478 1990 15 11243 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer