Results 11 to 20 of about 65,696 (224)
Heterocycles Synthesis at Carbonylation of Acetylenic Compounds [PDF]
Eurasian Chemico-Technological Journal, 2003 The carbonylation of unsaturated hydrocarbons, alcohols, organic halides and other substrates catalyzed by transition metals, salts of transition metals and organometallic complexes is a wide used synthesis method of new carbonyl, carboxyl and alkoxy ...
S.A. Vizer, K.B. Yerzhanov
doaj +2 more sources
, 2023 Base-mediated rearrangement of 1,3-dithianyl-substituted propargylamines in DMF via expansion of the dithiane ring has been reported. The rearrangement provided 9-membered amino-functionalized sulfur-containing heterocycles (dithionine derivatives) in ...
Zeynep Mert (15922132) +5 more
core +4 more sources
Enantioselective Access to Trifluoromethylated Spirocyclopropyl Heterocycles. [PDF]
Adv Sci (Weinh)We report a rhodium‐catalyzed asymmetric [2+1] spirocyclopropanation of methylene azacycles with trifluoromethyl carbenes in situ derived from fluoroalkyl triftosylhydrazones. ABSTRACT Chiral spirocyclopropyl heterocycles have emerged as privileged three‐dimensional structural motifs in medicinal chemistry.
Zhu Y +9 more
europepmc +2 more sources
Transition Metal Catalyzed Reactions for the Synthesis of N-heterocycles [PDF]
, 2020 Transition metal catalyzed reactions for the synthesis of medium sized N-heterocycles and synthesis of bioactive chemical ...
Wrickban Mazumdar (3876715)
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, 2020 Heterocycles have constituted the largest area of research in organic chemistry. These heterocycles play an important role in biochemical processes because the side groups of the most typical and essential constituents of living cells, DNA and RNA, are ...
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Constructing four-membered heterocycles by cycloisomerization [PDF]
, 2022 Four-membered heterocycles are highly sought after in modern drug discovery as they provide beneficial properties to the target molecules. Despite tremendous efforts by the synthetic research community, there is a need for a simple and new method to ...
Hiroki, Shigehisa +2 more
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Cyclohexanohemicucurbit[8]uril forms inclusion complexes with heterocycles and removes sulfuric guests from water via solid-phase extraction [PDF]
, 2021 We found that cyclohexanohemicucurbit[8]uril encapsulates five- and six-membered sulfur- and oxygen-containing unsubstituted heterocycles and can be used as a selective sorption material for the extraction of sulfur-heterocycles like 1,3-dithiolane and α‑
Sandra, Kaabel +7 more
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Novel five- to ten-membered organoselenium heterocycles from the selenation of aromatic diols [PDF]
, 2010 This work is funded by the EPSRC UKReaction of Woollins' reagent ― WR , 2,4-bis(phenyl)-1,3-diselenadiphosphetane 2,4-diselenide [{PhP(Se)(μ-Se)}2] ― with aromatic diols in refluxing toluene afforded a series of novel five- to ten-membered phosphorus ...
Woollins, J Derek +8 more
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New Method Development to Streamline the Synthesis of N-Heterocycles [PDF]
, 2016 Nitrogen-heterocycles are an important class of molecules because of its widespread availability in pharmaceuticals, natural products and organic electronic materials.
Navendu Jana (1312224)
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Oxime derivatives : versatile reagents for radical-mediated syntheses of heterocycles [PDF]
, 2010 A summary of tin hydride mediated reactions in generating radicals in organic synthesis is presented, together with some of the many alternative methods now available for conducting radical reactions.
Portela-Cubillo, Fernando
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