Zobrazeno 1 - 9
of 9
pro vyhledávání: '"Tian-Hua Shen"'
Publikováno v:
Chinese Chemical Letters. 22:1265-1268
A series of C 2 -symmetric and asymmetric chiral thiourea derivatives were synthesized from commercial l -phenylalanine. All of the new compounds have been fully characterized by IR, 1 H NMR, 13 C NMR, MS spectra and elemental analyses. The chiral th
Publikováno v:
Chirality. 26(12)
A series of chiral tridentate Schiff-bases were prepared and used as ligands in the catalytic asymmetric Henry reaction. Under the optimal conditions, a variety of arylaldehydes were smoothly converted into corresponding adducts with high yields (up
Publikováno v:
Acta Crystallographica Section E Structure Reports Online. 60:m741-m743
In the title compound, C25H27N3O·0.25H2O, the minimum and maximum C—C bond lengths in the cyclopentane ring are 1.444 (3) and 1.489 (3) A, respectively. In the crystal structure, molecules are linked by weak intermolecular C—H⋯O hydrogen b
Publikováno v:
Acta Crystallographica Section E Structure Reports Online. 60:o539-o541
Crystals of the title compound, C6H12N2O, were obtained from the reduction–hydrolysis reaction of 1-amino-1-cyclopentanecarbonitrile oxalate and the structure was determined in the monoclinic space group C2/c. There are two independent mol
Publikováno v:
ChemInform. 43
A C2-symmetric thiourea is employed as ligand to give the alkylated products with up to 87% e.e.
Publikováno v:
World Chinese Journal of Digestology. 23:5715
Publikováno v:
Acta Crystallographica Section E Structure Reports Online. 59:o1944-o1945
In the title compound, C14H10BrN, the dihedral angle between the two aromatic rings is 48.34 (14)°. Weak C—H⋯Br and C—H⋯N interactions are the principal intermolecular forces.
Autor:
Qing-bao Song, Gen-rong Qiang, Tian-hua Shen, Zhen-ping Yang, Yong-min Liang, Xiao-li Wu, Yong-xiang Ma
Publikováno v:
Synthesis & Reactivity in Inorganic & Metal-Organic Chemistry; Mar2004, Vol. 34 Issue 3, p479-488, 10p, 2 Diagrams, 5 Charts
Publikováno v:
Acta Crystallographica: Section E. Jun2004, Vol. 60 Issue 6, pm741-m743. 3p.