Asymmetric addition of 1-ethynylcyclohexene to both aromatic and heteroaromatic ketones catalyzed by a chiral Schiff base–zinc complex

2007 ◽  
Vol 5 (8) ◽  
pp. 1161-1163 ◽  
Author(s):  
Quan Wang ◽  
Bangzhi Zhang ◽  
Guowen Hu ◽  
Chao Chen ◽  
Qinyang Zhao ◽  
...  
ChemInform ◽  
2007 ◽  
Vol 38 (33) ◽  
Author(s):  
Quan Wang ◽  
Bangzhi Zhang ◽  
Guowen Hu ◽  
Chao Chen ◽  
Qinyang Zhao ◽  
...  

ChemInform ◽  
1990 ◽  
Vol 21 (28) ◽  
Author(s):  
S. ITSUNO ◽  
Y. SAKURAI ◽  
K. ITO ◽  
T. MARUYAMA ◽  
S. NAKAHAMA ◽  
...  

1990 ◽  
Vol 55 (1) ◽  
pp. 304-310 ◽  
Author(s):  
Shinichi Itsuno ◽  
Yoshiki Sakurai ◽  
Koichi Ito ◽  
Toshihiro Maruyama ◽  
Seiichi Nakahama ◽  
...  

2007 ◽  
Vol 62 (6) ◽  
pp. 807-817 ◽  
Author(s):  
Mohammed Enamullah ◽  
A.K.M. Royhan Uddin ◽  
Anne-Christine Chamayou ◽  
Christoph Janiak

Condensation of salicylaldehyde with enantiopure (R)-(1-aryl-ethyl)amines yields the enantiopure Schiff bases (R)-N-(1-aryl-ethyl)salicylaldimine (HSB*; aryl = phenyl, 2-methoxyphenyl, 3- methoxyphenyl, 4-methoxyphenyl (4), 4-bromophenyl (5), 2-naphthyl). These Schiff bases readily react with dinuclear (acetato)(η4-cycloocta-1,5-diene)rhodium(I), [Rh(μ-O2CMe)(η4-cod)]2, to afford the mononuclear complexes, cyclooctadiene-((R)-N-(1-aryl-ethyl)salicylaldiminato-κ2N,O)- rhodium(I), [Rh(SB∗)(η4-cod)] (SB* = deprotonated chiral Schiff base = salicylaldiminate; aryl = phenyl (7), 2-methoxyphenyl, 4-methoxyphenyl, 4-bromophenyl, 2-naphthyl). The complexes have been characterized by IR, UV/vis, 1H/13C NMR and mass spectrometry, optical rotation as well as by single-crystal X-ray structure determination for 4, 5 and 7. The structure of 5 shows C-Br· · ·π contacts. Compound 7 is only the second example of a Rh(η4-cod) complex with a six-membered Rh-N,O-chelate ring


2010 ◽  
Vol 39 (22) ◽  
pp. 5332 ◽  
Author(s):  
Edwin C. Constable ◽  
Guoqi Zhang ◽  
Catherine E. Housecroft ◽  
Jennifer A. Zampese

2003 ◽  
pp. 3736-3742 ◽  
Author(s):  
Jin Zhao ◽  
Xiangge Zhou ◽  
Ana M. Santos ◽  
Eberhardt Herdtweck ◽  
Carlos C. Romão ◽  
...  

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