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The Johnson–Corey–Chaykovsky reaction (sometimes referred to as the Corey–Chaykovsky reaction or CCR) is a chemical reaction used in organic chemistry for the synthesis of epoxides, aziridines, and cyclopropanes. It was discovered in 1961 by A. William Johnson and developed significantly by E. J. Corey and Michael Chaykovsky.
Elias James Corey (born July 12, 1928) is an American organic chemist.In 1990, he won the Nobel Prize in Chemistry "for his development of the theory and methodology of organic synthesis", [3] specifically retrosynthetic analysis.
Barton vinyl iodine procedure; Baudisch reaction; Bayer test; Baylis–Hillman reaction; ... Johnson–Corey–Chaykovsky reaction [26] [27] Jones oxidation [28] [29]
The Corey-Winter olefination is a stereospecific reaction: [1] a trans-diol gives a trans-alkene, while a cis-diol gives a cis-alkene as the product. For instance, cis- and trans-1,2-cyclodecanediol gives the respective cis- and trans-cyclodecene.
The reaction is often unsuccessful without substitution ortho to the nitro group, with bulkier ortho substituents usually resulting in higher yields for the reaction. The steric bulk of the ortho group assists in the [3,3]-sigmatropic rearrangement required for product formation. Three equivalents of the vinyl Grignard reagent are necessary for ...
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Reaction of Bestmann's reagent with aldehydes gives terminal alkynes often in very high yield and fewer steps than the Corey–Fuchs reaction. [4] [5] Bestmann's reagent. The use of the milder potassium carbonate makes this procedure much more compatible with a wide variety of functional groups.