hexatriene
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Diphenylhexatriene — Diphenylhexatriene[1] … Wikipedia
Woodward–Hoffmann rules — The Woodward–Hoffmann rules devised by Robert Burns Woodward and Roald Hoffmann are a set of rules in organic chemistry predicting the stereochemistry of pericyclic reactions based on orbital symmetry. These include electrocyclic reactions,… … Wikipedia
Elias James Corey — E.J. Corey Born 12 July 1928 (1928 07 12) (age 83) Methuen, Massachusetts, USA … Wikipedia
Lipid raft — organisation, region (1) is standard lipid bilayer, while region (2) is a lipid raft. The plasma membrane of cells is made of a combination of glycosphingolipids and protein receptors organized in glycolipoprotein microdomains termed lipid… … Wikipedia
Electrocyclic reaction — In organic chemistry, an electrocyclic reaction is a type of pericyclic rearrangement reaction where the net result is one pi bond being converted into one sigma bond. These reactions are usually unnamed, being categorized by the following… … Wikipedia
AROMATICITÉ — Peu de notions sont aussi fondamentales et aussi souvent utilisées que celle d’aromaticité; cependant c’est une des moins claires et des plus difficiles à préciser. Elle tire son origine de faits chimiques qui font apparaître d’étroites parentés… … Encyclopédie Universelle
