Enzymes are biological catalysts that produce large increases in reaction rates and tend to be specific for certain reactants and products. 604-69-3, Name is beta-D-Glucose pentaacetate, molecular formula is C16H22O11, belongs to dioxoles compound. In a document, author is Nikolaev, Vsevolod V., introduce the new discover, Application In Synthesis of beta-D-Glucose pentaacetate.
Spirocyclic and fused derivatives of maleimide based on intra- and intermolecular reactions of carbonyl ylides from diazocarbonyl compounds
The reaction of maleimide with Rh(II)-ketocarbenoids, derived from acyclic diazocarbonyl compounds, proceeds chemoselectively at the oxygen atom of the imidic C=O group to give carbonyl ylides as reactive inter-mediates. The carbonyl ylide generated from maleimide and ethyl diazoacetate reacts intermolecularly with the double bond of another molecule of maleimide to yield tricyclic spiroadducts via [3+2]-cycloaddition. Intramolecular stabilization is characteristic for carbonyl ylides with two bulky electron-withdrawing groups at the carbanionic center and occurs in two different ways, depending on the structure of the substituents: carbonyl ylides from diazomalonate, which possess two alkoxycarbonyl groups at the carbanionic C-atom, experience a 1,3-dipolar electrocyclization with formation of an oxirane, while carbonyl ylides with at least one a-acyl group, derived from diazoacetoacetate or diazoacetylacetone, undergo an intramolecular 1,5-dipolar electrocyclization to produce 1,3-dioxole derivatives of maleimide.
Balanced chemical reaction does not necessarily reveal either the individual elementary reactions by which a reaction occurs or its rate law. In my other articles, you can also check out more blogs about 604-69-3. Application In Synthesis of beta-D-Glucose pentaacetate.
Reference:
1,3-Benzodioxole – Wikipedia,
,Dioxole | C3H4O2 – PubChem