Treatment of allylic hydroxy phosphonates in aldehyde solution with mercuric trifluoroacetate, followed by the reduction of the organomercurial intermediate, afforded the cyclic acetal derivatives. The reaction displays high diastereo- and regio-selectivity. 31 P NMR studies showed the formation of an ...
ChemInform Abstract: Investigations of the Formation of Cyclic Acetal and Ketal Derivatives of D‐Ribono‐1,4‐lactone and 2‐Deoxy‐D‐ribono‐1,4‐lactone.carbohydratesprotection, deprotectionChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from...
Learn about cyclic acetal. Understand what cyclic acetal is, its structure, mechanism forming cyclic acetal in regard to protecting aldehyde or...
Cyclic Acetal Formation Between 2-Pyridinecarboxaldehyde and γ-Hydroxy-α,β-Acetylenic EstersCyclic Acetal Formation Between 2-Pyridinecarboxaldehyde and γ-Hydroxy-α,β-Acetylenic EstersCYCLIC compoundsALDEHYDESESTERSPYRIDINE...
Acetal Formation During the Catalytic Hydrogenation of Cyclic α,β-Unsaturated KetonesThe formation of saturated 1,3-dioxalanes and dimethyl acetals has been observed when α,β-unsaturated ketones are hydrogenated in methanol or ethylene glycol/THF....
T., 1973, Evidence for the electron impact induced formation of prominent cyclic acetal ions from aliphatic ester lipids, J. Org. Chem . 38 : 3767.Bauman, W. J.; Aasen, A. J.; Kramer, J. K. G.; Holman, R. T. Evidence for the Electron Impact Induced Formation of Prominent Cyclic...
An efficient method has been found for the preparation of cyclic monodithioacetats of 1,3-dicarbonyl compounds using boron trifluoride etherate as the acid catalyst. Asymmetric 1,3-diketones react regioselectively in most of the cases tried. A study of the 13C and 1H nmr characteristics of th...
Interactive 3D animations of stereoselective anti aldol with E-enolate - reaction mechanisms for students studying University courses
accepted7April2000AbstractAseriesofglucals,protectedbycyclicacetalprotectinggroupstoconformationallyconstraintheC-4andC-6hydroxylgroups,weresubjectedtotheazidonitrationreactiontofurnishthecorrespondingC-2azidodeoxy-D-glu-coses.4,6-O-Isopropylidene-3-O-triisopropylsilyl-D-arabino-hex-1-enitolafforded2-azido-2-...
fundamental cyclic unit of cellulose; it contains all of the chemical components present in cellulose. Figure 1 Optimized structure of the model compound cellobiose. Full size image Computational method All of the calculations in this article were done using Accelrys’s Materials Studio DMol3. The ...