Zobrazeno 1 - 10
of 39
pro vyhledávání: '"Ctibor Mazal"'
Publikováno v:
Molecules, Vol 26, Iss 9, p 2501 (2021)
The experimentally motivated question of the acetylene bromoboration mechanism was addressed in order to suggest possible radical isomerization pathways for the syn-adduct. Addition–elimination mechanisms starting with a bromine radical attack at t
Externí odkaz:
https://doaj.org/article/d2801bd0a7074fe6aac5caff910ee3ea
Publikováno v:
The Journal of Organic Chemistry. 85:6992-7000
The mechanism of acetylene bromoboration in neat boron tribromide was studied carefully by means of experiment and theory. Besides the syn-addition mechanism through a four-center transition state,...
Autor:
Monika Skrutková Langmajerová, Karel Lacina, Ctibor Mazal, Martin Konhefr, Petr Skládal, Zdeněk Glatz
Publikováno v:
ChemistrySelect. 3:9641-9647
Vzajemna pozice funkcnich skupin iminu a boronove kyseliny v ortho regioisomeru ((ferrocenylimino)methyl)fenylboronove kyseliny (1a) usnadňuje a významně podporuje vratne molekularni přepinani mezi C=N iminem a COR-NH hemiaminalem. Tyto dva stavy
Publikováno v:
Tetrahedron. 74:3616-3623
Phenanthrylene-ethynylidene macrocycles combining electron donor and electron acceptor subunits in their shape-persistent fully conjugated core were synthesized. The donor subunits consisted of two 9,10-dialkoxyphenanthrenes linked either with 1,2-et
Autor:
Karel Lacina, Monika Skrutková Langmajerová, Martin Konhefr, Ctibor Mazal, Petr Skládal, Zdeněk Glatz
Publikováno v:
Monatshefte für Chemie - Chemical Monthly. 148:1953-1958
Along our way towards the advanced saccharide-sensitive probes, three novel electroactive iminoboronate regioisomers of [(ferrocenylimino)methyl]phenylboronic acid have been synthesized. The ortho, meta, and para regioisomers were characterized struc
Autor:
Martin Konhefr, Zdeněk Glatz, Monika Skrutková Langmajerová, Ctibor Mazal, Petr Skládal, Lenka Michalcová, Karel Lacina
Publikováno v:
Tetrahedron Letters. 61:151535
The boronic acid moiety in the proximity of electron-donating structures in ((ferrocenylimino)methyl)phenylboronic acid 1 significantly improves the reactivity of the molecule. The ortho regioisomer 1a exhibits a two-fold higher affinity to NaCl comp
Publikováno v:
Chemical communications (Cambridge, England). 54(44)
A controlled photorelease of alkynoic acids from the meso-methyl BODIPY photoremovable protecting group facilitates their subsequent efficient decarboxylation to give terminal alkynes for a CuI-catalyzed azide/alkyne cycloaddition. The quantum effici
Publikováno v:
Rapid Communications in Mass Spectrometry. 29:1125-1134
Shape-persistent macrocycles (SPMs) represent innovative molecular building blocks for the development of highly organised supramolecular architectures with application in nanotechnology, chemistry, catalysis and optoelectronics. Systematic mass spec
Publikováno v:
The Journal of organic chemistry. 81(15)
A series of macrocycles consisting of 9,10-substituted phenanthrenes connected by butadiynylene linkers in positions 3 and 6 has been described as well as their transformation into the corresponding phenanthrylene-thienylene macrocycles. Structure an
Publikováno v:
European Journal of Organic Chemistry. 2012:4783-4796
1,3-Diethynylbicyclo[1.1.1]pentane (DEBCP) has been found to be a valuable molecular building block mostly for the synthesis of extended, rigid, rod-like molecules. With its straightforward linear geometry, DEBCP can be used as a nonconjugated altern