Zobrazeno 1 - 10
of 20
pro vyhledávání: '"Tae-Woong Um"'
Publikováno v:
Organic Letters. 24:8337-8342
Publikováno v:
Organic letters. 24(9)
A new type of sp
Autor:
Seung-Hyun Shin, Kwang-Hun Oh, Tae-Woong Um, Jae-Geun Ha, Tae-Hwan Kim, Masao Kamiko, Jung-Hyuk Koh, Woo-Seong Kim
Publikováno v:
Journal of Nanoscience and Nanotechnology. 20:3231-3238
We analyze and compare the differences in the dewetting phenomena and crystal structure between Ag(5.0 nm) and Au(5.0 nm) layers deposited on a Ti(1.0 nm) seed layer coated onto a MgO(001) substrate. The samples are deposited at room temperature and
Publikováno v:
Organic Letters. 22:1985-1990
Bronsted acid-catalyzed addition of the chiral N,N′-dioxide into ynamides generated enolonium ions in situ which underwent enantioselective alkylation by indoles, pyrroles, and phenols, without racemization of the formed tertiary center. This exter
Publikováno v:
The Chemical Record. 22
Umpolung approach through inversion of the polarity of conventional enolates, has opened up an unprecedented opportunity in the cross-coupling via alkylation. The enolonium equivalents can be accessed either by hypervalent iodine reagents, activation
Publikováno v:
Organic letters. 22(5)
Brønsted acid-catalyzed addition of the chiral
Publikováno v:
The Journal of Organic Chemistry. 83:4703-4711
Metal-free oxidation of ynamides is described, employing pyridine-N-oxides as oxidants under molecular iodine catalysis. In stark contrast to Bronsted acid catalysis, iodophilic activation of ynamides diverts the reaction manifold into a dioxygenatio
Publikováno v:
Organic Letters; 3/11/2022, Vol. 24 Issue 9, p1774-1779, 6p
Publikováno v:
Chemical Communications. 53:2733-2736
The keteniminium ions generated from the protonation of ynamides formed reversible adducts with counter anions and pyridine-N-oxides as well as halogenated solvents. Above 80 °C, the halonium ions selectively undergo a rate-limiting attack by pyridi
Autor:
Sung Jin Park, Byeong Sun Yoo, Yeong Hun Kim, Myung Mo Ahn, In Seok Kang, Do Jin Im, Tae Woong Um
Publikováno v:
The Analyst. 143(23)
A continuous droplet electroporation (EP) system capable of handling a billion cells has been proposed and demonstrated using a proof-of-concept prototype design. Numerical simulations were conducted to design the new system and to compare the contin