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William D. Emmons
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called the Horner-Wadsworth-Emmons reaction or HWE reaction or Horner-Wittig reaction. Emmons studied at the University of Minnesota and served in the PacificGroup 13/15 multiple bonds (3,100 words) [view diff] case mismatch in snippet view article find links to article
Nichol, Gary S.; Cowley, Michael J. (2021-09-08). "The Phospha-Bora-Wittig Reaction". Journal of the American Chemical Society. 143 (35): 14065–14070.Histrionicotoxins (1,411 words) [view diff] exact match in snippet view article find links to article
deprotection of the allylic alcohol followed by oxidation gave 138. A Wittig reaction then generated a chloroalkene, which, upon base-promoted eliminationCombretastatin (613 words) [view diff] exact match in snippet view article find links to article
possessing the desired substituents using a Wittig olefination. The Wittig reaction produces varying amounts of E and Z isomers depending mainly on solventMethylenetriphenylphosphorane (376 words) [view diff] exact match in snippet view article find links to article
Two examples of the Wittig reaction using methylenetriphenylphosphoraneW. Clark Still (2,031 words) [view diff] exact match in snippet view article find links to article
3-sigmatropic rearrangement. This variation of the traditional 2,3-Wittig reaction is known as the Wittig-Still rearrangement. An application of the Wittig-StillWilliamson ether synthesis (1,324 words) [view diff] case mismatch in snippet view article find links to article
Syntheses for the Undergraduate Laboratory: Diels−Alder Cycloaddition, Wittig Reaction, and Williamson Ether Synthesis". Journal of Chemical Education. 87Methyltriphenylphosphonium bromide (119 words) [view diff] case mismatch in snippet view article find links to article
15227/orgsyn.040.0066. Fitjer, Lutz; Quabeck, Ulrike (1985). "The Wittig Reaction Using Potassium-tert-butoxide High Yield Methylenations of StericallyTriethyl phosphonoacetate (113 words) [view diff] exact match in snippet view article find links to article
Michael (July 1985). "The Horner-Wadsworth-Emmons modification of the Wittig reaction using triethylamine and lithium or magnesium salts". The Journal ofOrganic azide (2,895 words) [view diff] exact match in snippet view article find links to article
reaction), react with carbonyl compounds to give imines 24 (the aza-Wittig reaction), or undergo other transformations. Thermal decomposition of azidesDesmosterol (1,700 words) [view diff] case mismatch in snippet view article find links to article
24-Dehydrocholesterol: Isolation from a Barnacle and Synthesis by the Wittig Reaction". Journal of the American Chemical Society. 79 (24): 6473–6475. doi:10Mallory reaction (1,011 words) [view diff] exact match in snippet view article find links to article
N-bromosuccinimide, transformation to the phosphonium salt, and a Wittig reaction with anaromatic aldehyde, photocyclization fuses the aromatic ringsProstaglandin F2alpha (1,126 words) [view diff] exact match in snippet view article find links to article
undergoes a cross-metathesis reaction to install the E-alkene. Then, a Wittig reaction is performed to install the Z-alkene. Finally, the protecting groupsΑ-Linolenic acid (2,126 words) [view diff] exact match in snippet view article find links to article
first artificially synthesized in 1995 from C6 homologating agents. A Wittig reaction of the phosphonium salt of [(Z-Z)-nona-3,6-dien-1-yl]triphenylphosphoniumDiscodermolide (3,460 words) [view diff] exact match in snippet view article find links to article
trisubstituted vinyl iodide is less reactive than alkyl iodide. A Wittig reaction with followed by Suzuki coupling with alkyl iodide efficiently furnishedTotarol (4,492 words) [view diff] exact match in snippet view article find links to article
(Scheme 4). The key step in the synthesis is the formation of 13 via a Wittig reaction between 11 and 12. This same cyclization can also be achieved via a