European Journal of Organic Chemistry
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Muriceanol, a 24(28)‐Epoxide Sterol Link in the Carbon Flux Toward Side‐Chain Dealkylation of Sterols
European Journal of Organic Chemistry - Tập 2006 Số 3 - Trang 582-585 - 2006
AbstractSide‐chain‐oxidized C‐28‐sterol 1 and one new pregnane metabolite 2 were
isolated from eastern Pacific Muricea spp. The C‐24(28)‐epoxide functionality is
a key intermediate in the C‐24‐dealkylation mechanism of the conversion of
phytosterol to cholesterol by phytophagous insects. Certain marine invertebrates
share this dealkylation pathway; however, such a key epoxide feature has not yet
b...
Late‐Stage C–H Bond Arylation of Spirocyclic σ1 Ligands for Analysis of Complementary σ1 Receptor Surface
European Journal of Organic Chemistry - Tập 2012 Số 30 - Trang 5972-5979 - 2012
AbstractDirect C–H bond arylation in the α‐ and β‐positions of spirocyclic
thiophenes containing various functional groups (amine, ether, acetal, lactone)
was accomplished. Selective phenylation in the α‐position of the thiophene ring
was achieved by using the catalytic system PdCl2/bipy/Ag2CO3. The introduction
of phenyl moieties to the β‐position was performed with the catalytic system
PdCl2/P[O...
Divergent Palladium‐Catalyzed Cross‐Coupling of Nitropyrazoles with Terminal Alkynes
European Journal of Organic Chemistry - Tập 2018 Số 20-21 - Trang 2645-2650 - 2018
Facile homo‐coupling of terminal alkynes, which generates conjugated diynes, is
an undesired pathway in the development of transition‐metal‐catalyzed oxidative
C–H functionalization of (hetero)arenes with terminal alkynes. By incorporating
this process into a catalytic cycle, we achieved regio‐ and stereoselective
hydroarylation of nitropyrazoles with the resulting 1,3‐diynes. A simple change
in t...
Recent Advances in Green Synthesis of Functionalized Phenols from Aromatic Boronic Compounds
European Journal of Organic Chemistry - Tập 2019 Số 44 - Trang 7307-7321 - 2019
Phenol and its derivatives are fundamental building blocks in organic synthesis
and materials science. Over the past decades, tremendous attention has been paid
to construct functionalized phenols, and various methods have been developed.
Owing to the high efficiency and mild reaction conditions, synthesis of phenols
from the hydroxylation of aryl boronic compounds has been emerging as a
promising...
Recent Advances in Organoselenium Chemistry
European Journal of Organic Chemistry - Tập 2009 Số 11 - Trang 1649-1664 - 2009
AbstractThis microreview highlights new developments of organoselenium chemistry
and new selenium compounds as versatile reagents in synthesis. (© Wiley‐VCH
Verlag GmbH & Co. KGaA, 69451 Weinheim, Germany, 2009)
Bismuth(III ) Triflate in Organic Synthesis
European Journal of Organic Chemistry - Tập 2004 Số 12 - Trang 2517-2532 - 2004
AbstractBismuth(III) triflate is a new, cheap and environmentally friendly Lewis
acid. The research presented in this microreview is devoted to the evaluation of
the scope of the uses of bismuth(III) triflate in organic synthesis. (©
Wiley‐VCH Verlag GmbH & Co. KGaA, 69451 Weinheim, Germany, 2004)
Synthesis and Property Studies of Cyclotrisazobenzenes
European Journal of Organic Chemistry - Tập 2009 Số 32 - Trang 5647-5652 - 2009
AbstractAzobenzenophanes are fascinating macrocycles, which are of special
interest due to their unique photochromic behavior. Cyclotrisazobenzenes2(R = H,
Br,tBu) were prepared to probe how much strain the photoisomerization of the
azobenzene motive can tolerate. The macrocycles were synthesized in an overall
yield of 10–20 % fromortho‐phenylenediamine (6). Solid‐state structures of
cyclotrisazob...
Lyngbyabellins K–N from Two Palmyra Atoll Collections of the Marine Cyanobacterium Moorea bouillonii
European Journal of Organic Chemistry - Tập 2012 Số 27 - Trang 5141-5150 - 2012
AbstractFive lipopeptides of the lyngbyabellin structure class, four cyclic (1–3
and 5) and one linear (4), were isolated from the extracts of two collections of
filamentous marine cyanobacteria obtained from the Palmyra Atoll in the Central
Pacific Ocean. Their planar structures and absolute configurations were
elucidated through a combination of spectroscopic and chromatographic analyses
as well...
Recent Advances in the A3 Coupling Reactions and their Applications
European Journal of Organic Chemistry - Tập 2019 Số 16 - Trang 2704-2720 - 2019
Propargylamines are an important class of organic compounds that have been
widely used as building blocks for the synthesis of various kinds of chemically
and biologically relevant compounds. Over the last few years, there have been a
rapid growth in the research dedicated to developing the synthetic protocol for
propargylamine derivatives. Among various methods that are reported for the
synthesis...
1,2,3‐Triazole in Heterocyclic Compounds, Endowed with Biological Activity, through 1,3‐Dipolar Cycloadditions
European Journal of Organic Chemistry - Tập 2014 Số 16 - Trang 3289-3306 - 2014
Abstract1,3‐Dipolar cycloaddition reactions can be considered a powerful
synthetic tool in the building of heterocyclic rings, with applications in
different fields. In this review we focus on the synthesis of biologically
active compounds possessing the 1,2,3‐triazole core through 1,3‐dipolar
cycloaddition reactions. The 1,2,3‐triazole skeleton can be present as a single
disubstituted ring, as a ...
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