Enolscan also perform the aldol reaction aldehydes and ketones,ifan acid catalyst is present to help move things along. The acid-catalyzed aldol reaction almost always results in thecondensationproduct (loss of H2O), even without heat. Being harder to control, the acid-catalyzed aldol tends to g...
Halogenation of Ketones. VI. On the Deuteration of Butanone-2 in Aqueous Acetate, and Acetate Buffers. C Rappe,T Kautto,G Schroll,... - 《Acta Chemica Scandinavica》 被引量: 0发表: 1966年 Reduction of C N to CHNH by Metal-Catalyzed Hydrogenation and Transfer Hydrogenation Deuteration ...
Intramolecular general acid catalysis in the halogenation of ketonesdoi:10.1039/p29730001681Bell, Ronald P.Page, Michael I.Journal of the Chemical Society Perkin Transactions
This is the first of three ways to add alcohol to a double bond. It is similar to hydrohalogenation in terms of mechanism, however it will require a protonation and deprotonation step since it is acid-catalyzed. 1 concept General properties of acid-catalyzed hydration. Video duration: ...
ChemInform Abstract: (+)‐Tartaric Acid‐Catalyzed High Regio‐ and Stereoselective Aminobromination of Olefins.sulfonamides (hydrazides, ureides) (benzene compounds)addition reactionshalogenationamination, N-alkylation, N-arylationdiastereoselective syntheses, enantioselective syntheses (incl. cis/trans-isomerism...
Cerium-catalyzed C–H functionalizations of alkanes utilizing alcohols as hydrogen atom transfer agents. J. Am. Chem. Soc. 142, 6216–6226 (2020). Article CAS PubMed Google Scholar Shu, C., Noble, A. & Aggarwal, V. K. Metal-free photoinduced C(sp3)–H borylation of alkanes. Nature ...
only a handful of enzymes that carry out the regioselective halogenation of unactivated{\rm{C}}_{sp^3}{-}{\rm{H}}bonds have previously been identified. In this context, we report the structural characterization of BesD, a recently discovered radical halogenase from the FeII/α-ketogluturate...
Sodium nitrite-catalyzed oxybromination of aromatic compounds and aryl ketones with a combination of hydrobromic acid and molecular oxygen under mild condi... A novel and efficient catalytic system for the oxybromination of aromatic compounds and aryl ketones utilizing a combination of aqueous ...
Direct halogenation of 3-methyl-3-cephem gave complicated products, however, photo or radical initiated bromination of 3-methylcephem sulfoxide did give a respectable yield 〈83T337, 83T461〉. Various nucleophiles can be introduced by displacement at the C10 allylic center (Scheme ...
Fig. 10. Continuous flow-mediated synthesis of 3-substituted tetronate 52. 2.1.3 Metal catalyzed CC cross coupling reactions Pd-catalyzed cross coupling reactions were mainly used to obtain 3-arylsubstituted tetronates, in some cases after the introduction of 5-arylidene moieties by metalation reac...