Definition of Antarafacial. Meaning of Antarafacial. Synonyms of Antarafacial

- In organic chemistry, antarafacial (Woodward-Hoffmann symbol a) and suprafacial (s) are two topological concepts in organic chemistry describing the relationship...
- of antarafacial components usually means zero or one antarafacial components, respectively, as transition states involving two or more antarafacial components...
- Photoirradiation would require an antarafacial shift of hydrogen. Although rare, there are examples where antarafacial shifts are favored: In contrast to...
- (syn/syn stereochemistry) in most cases. Very few examples of antarafacial-antarafacial (anti/anti stereochemistry) reactions have also been reported...
- suprafacially and none moving antarafacially, implying this reaction is allowed by the Woodward–Hoffmann rules. For an antarafacial shift, the reaction is not...
- pairs will proceed through a Hückel transition state (even number of antarafacial components in Woodward–Hoffmann terminology), while a pericyclic reaction...
- independent of UV light, the pre-cholecalciferol then undergoes a [1,7] antarafacial sigmatropic rearrangement and therein finally isomerizes to form vitamin...
- the actual rearrangement reaction. A concerted reaction requires an antarafacial reaction mode but since the migrating group displays retention of configuration...
- photochemical A/D-seco-corrin corrin cycloisomerization involves an antarafacial sigmatropic shift of the α-hydrogen of the CH2 position C-19 at ring...
- boat-like; a chair-like transition state would result in three two-electron antarafacial components. The chair-like case is thermally disallowed by the Woodward-Hoffman...