C2-Symmetric 1,2-di(fluorenylidene)cyclobutanes: syntheses, structures, rearrangements and reactivityC2-SymmetryCyclobutanesAxial chiralitybrominationX-ray crystallographyDFT calculationsAttempted deprotonation of 1,2-di(fluorenylidene)cyclobutane, 8, using n-butyl or tert-butyl-lithium led instead to 1,4...
C2-symmetric bis(phospholanes) and their use in highly enantioselectivehydrogenation reactions. Burk M. J. Journal of the American Chemical Society . 1991Burk, M. J., C2-symmetrical bis(phospholanes) and their use in highly enantioselective hydrogenation reactions, J. Am. Chem. Soc., 1991, ...
1) C2-symmetric chiral ligand C2-对称性手性配体2) C2-symmetry C2对称性3) C 2 symmetric C2-对称性4) Chiral C 2 diols 手性C2-二醇5) Chiral asymmetry Salen Ni complex 手性不对称Salen Ni配合物6) pairing symmetry 配对对称性补充资料:[3-(aminosulfonyl)-4-chloro-N-(2.3-dihydro-2-...
ChemInformC 2 -symmetric proline-derived tetraamine as highly effective catalyst for direct asymmetric Michael addition of ketones to chalcones. Shijun Ma,Lulu Wu,Ming Liu,Yongmei Wang. Organic and Biomolecular Chemistry . 2012S. Ma, L. Wu, M. Liu, Y. Wang, C2-symmetric proline-derived ...
C.hlf.2.rhlf.-Symmetric chiral bis(oxazoline).symbol.-metal complexes in catalytic asymmetric synthesis AK Ghosh,P Mathivanan,J Capiello 被引量: 102发表: 1998年 ChemInform Abstract: Asymmetric Addition of Diethylzinc to Aromatic Aldehydes Using Enantiomerically Pure Hydroxymethyl Oxazoline Ligands. ...
Organic chemistry C2-Symmetric Bis(phosphines) and Their Metal Complexes. SynthesisMaterials Applicationand Screening Racemic Catalysts DARTMOUTH COLLEGE David S. Glueck SandersonMatthew DavidKagan's method for obtaining selectivity information from racemic catalysts was applied to the Pt-catalyzed asymmetric ...
Synthesis of the C2 Symmetric 1,3-Dicyclohexyl-1,3-Propanediol and Diamine Enantiomerscyclohexane derivativesamination, deaminationChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 100 leading journals. To access a ChemInform Abstract of ...
C2- Symmetric chiral bis(oxazoline)-metal complexes in catalytic asymmetric synthesis. Tetrahedron: Asymmetry 1998, 9, 1-45. (c) Jorgensen, K. A.; ... A Pfaltz - 《Accounts of Chemical Research》 被引量: 0发表: 1993年 Synthesis and Applications of C-Symmetric Chiral Bis(oxazoline) The ...
The synthesis of three chiral titanocene dichlorides based on a readily-accessible C2-symmetric tetrahydropentalenyl ligand is described. Two of the complexes are unsymmetrical containing also Cp and Cp∗ ligands, and one is the symmetric complex with two chiral tetrahydropentalenyls. The redox ...
2a–d. The C2-symmetric electronic structure is also revealed by the band dispersions. Along the Ma–Γ and Mb–Γ directions, the band curvature around Ma and Mb are clearly different [Fig. 2e, g]. An electron pocket is formed around Ma whereas two hole-like pockets are found on each...