Zobrazeno 1 - 10
of 37
pro vyhledávání: '"KOON-HA PARK"'
Publikováno v:
Research on Chemical Intermediates. 44:7657-7664
Each of the three new hydrazobenzenes consisting of a hydrazobenzene conjugated with a 5-membered heterocyclic ring (furan or thiophene) at its two para positions, prepared from corresponding azo precursors, was used in the acid-catalyzed benzidine r
Publikováno v:
Journal of Heterocyclic Chemistry. 50:663-667
A simple and fast preparative method of 2-styrylbenzoxazoles by oxidative intramolecular cyclization of styrylphenolic Schiff bases with thianthrene cation (Th+.ClO4−) is described. The oxidative cyclization of Schiff bases in the presence of 2,6-d
Publikováno v:
Tetrahedron. 68:6038-6053
The potential use of a fluorescent tag system based on 7-(1H-1,2,3-triazol-4-yl)coumarin fluorophore having a fluorous moiety and a polyethylene glycol (PEG) spacer at opposite ends as a tool for a stepwise and comparative evaluation of the fabricati
Publikováno v:
Bulletin of the Korean Chemical Society. 35:2183-2185
Chemosensors, small chemical compounds that sense the presence of analytes or energy, typically consist of two components: a receptor moiety that interacts with the target analytes and a read-out system that signals binding. And one of the most utili
Autor:
Young-A Son, Sun Duk Koh, Kyoung-Lyong An, Seung-Rim Shin, Jong-Il Shin, Sang-Oh Lee, Kun Jun, Koon Ha Park, Soo-Youl Park
Publikováno v:
Bulletin of the Korean Chemical Society. 35:277-279
Typical fluorescent sensors consist of a receptor linked toa fluorophore directly or through a spacer. Wherein thereceptor moiety is capable of selectively interacting with ananalytes, the fluorophore converts the recognition proceed-ings into fluore
Publikováno v:
Bulletin of the Korean Chemical Society. 28:1515-1518
A preparative method of Me2SCuX (X = Cl, Br) via one-pot reaction was developed from common chemicals such as benzyl halide, DMSO, and Cu(0). In the reaction mixture small molecules such as methyl halide and dimethyl sulfide etc. were efficiently gen
Publikováno v:
Bulletin of the Korean Chemical Society. 2014, Vol. 35 Issue 7, p2183-2185. 3p.
Publikováno v:
ChemInform. 44
The products are obtained in much lower yields in the absence of 2,6-di-tert-butyl-4-methylpyridine.
Publikováno v:
Synthetic Communications. 29:583-589
1-Phthalazinylhydrazones 4 gave i,-triazolo[3,4-a]phthalazines 5 in 94-98% yields by thianthrene cation radical perchlorate (Th+′C104 -).
Autor:
Myeong Soon Park, Kyung Il Ahn, Sung-Won Kim, Hyun Sang Joo, Pill Soo Shin, Koon Ha Park, Kun Jun
Publikováno v:
Tetrahedron Letters. 40:1145-1148
New heterocycles 6 having a skeleton of 7-membered lactone and a 1,2,3,4-tetrahydroquinoline were obtained from TiO2 suspended alcoholic solution of trans m-nitrocinnamic acid 4 by uv (350 nm) irradiation. Highly functionalized products 6 are believe