Zobrazeno 1 - 10
of 25
pro vyhledávání: '"Ryung-Kee Hong"'
Publikováno v:
International Journal of Smart Business and Technology. 7:13-18
Autor:
Ryung Kee Hong, Wang-Kyu Lim
Publikováno v:
Journal of Digital Convergence. 12:33-48
The purpose of this study was to investigate the relationships among the work satisfaction and quality of life with retirement preparation of middle-aged workers. Data from 283 subjects were collected and analyzed. The findings are as follows. First,
Publikováno v:
Synthetic Communications. 27:2351-2356
The ligand coupling of various diaryl- or alkynyl(phenyl)iodonium salts in the presence of diethylzinc and a palladium catalyst afforded biaryls or dialkynes under mild conditions.
Publikováno v:
Synthetic Communications. 26:4219-4224
The hetero-cross coupling reaction of diphenyliodonium tetrafluoro-borate with secondary amine in the presence of LiNTMS2 or NaOtBu as base, Pd2(dba)3°CHCl3 as catalyst, and tri-o-tolylphosphine as ligand afforded arylamines at room temperature unde
Publikováno v:
Synthetic Communications. 26:3225-3235
Allylic substitution of allylic cyclic carbonates with PhSH or PhOH in the presence of CpRu(PPh3)2Cl (5 mol %) afforded (E)-allylic alcohol and erythro-β-hydroxy thiophenoxide or phenoxide respectively, via external attack of nucleophiles to π-ally
Publikováno v:
Synthetic Communications. 26:1493-1498
Allylation of aldehydes by reaction allylic phosphates with diethylzinc in the presence of Pd(PPh3)4 afforded homoallylic alcohol via nucleophilic allylzinc species.
Publikováno v:
Tetrahedron Letters. 36:405-408
The alkyl substituted allylic cyclic carbonates 1a-d undergo elimination by using a catalytic amount of Pd(0) complex to form dienols 2a-b . However, on treatment of the unsubstituted or phenyl substituted allylic cyclic carbonates 1e and 1f with pal
Publikováno v:
Tetrahedron: Asymmetry. 6:97-100
Porcine pancreas lipase(PPL)-catalyzed acetylation of (±)-2-hydroxymethyl-3,4-dihydro-2 H -pyran with vinyl acetate in organic solvent afforded ( S )-(+)-2-acetoxymethyl-3,4-dihydro-2 H -pyran. Alternatively, (±)-2-acetoxymethyl-3,4-dihydro-2 H -py
Publikováno v:
ChemInform. 26
The alkyl substituted allylic cyclic carbonates 1a-d undergo elimination by using a catalytic amount of Pd(0) complex to form dienols 2a-b . However, on treatment of the unsubstituted or phenyl substituted allylic cyclic carbonates 1e and 1f with pal
Publikováno v:
ChemInform. 26
Porcine pancreas lipase(PPL)-catalyzed acetylation of (±)-2-hydroxymethyl-3,4-dihydro-2 H -pyran with vinyl acetate in organic solvent afforded ( S )-(+)-2-acetoxymethyl-3,4-dihydro-2 H -pyran. Alternatively, (±)-2-acetoxymethyl-3,4-dihydro-2 H -py