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Search results for: wittig rearrangement
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... after [2 ,3 ] -Wittig rearrangement and oxidation, the dialdehyde 1 ... 12. Diazo transfer followed by Wolff rearrangement gave the cyclobutane ester, that via ...
... via [2 ,3 ] -Wittig sigmatropic rearrangement. K. Mikami, ... . Nakai, Synthesis, 1991, 594. Key Words: Asymmetric ene reactions ...
... REACTION/ALKOXYALLYLPHOSPHINE OXIDE YLIDES/SIGMATROPIC WITTIG REARRANGEMENTS/DITHIO-SUBSTITUTED CROTYLLITHIUM A. R ... IMIDAZOLE-1-CARBOXYLIC/TRIAZOLE-1-CARBOXYLIC ACID/HETEROCYCLES Heterocyclic rearrangements of benzofuroxans and related compounds. A ...
... group using an Anders-Gaßner modification of the Wittig reaction performed by the Williams group. ... and Williams approach was using a Claisen rearrangement to impart one of the more tricky ...
... Key Words: TRANSITION-METAL COMPLEXES/INTRAMOLECULAR WITTIG REACTION/CARBON-HALOGEN COMPOUNDS/BETA-SILYLPHOSPHOROUS YLIDE ... : ACTIVE PHOSPHINE OXIDES/ACCELERATED CLAISEN REARRANGEMENTS/PHOSPHORUS-ACID DIAMIDES/HIGH ENANTIOMERIC PURITY ...
... and oxidized to the ketone 13. Wittig olefination gave a pair of geometric isomers ... of 8 underwent smooth oxy- Cope rearrangement , to give an enolate that was ...
... carried on to the stannane 8. Wittig-Still rearrangement set the geometry of the alkene ... after which the product alcohol was converted to 9. To promote the challenging enantioselective ...
... , different products are formed due to Wittig rearrangements. The process is efficient for ... allyl ethers, including those derived from primary, secondary, tertiary alcohols, and ...
... was presumed to be suitable for a Wittig reaction ; however, this was a ... treated with acid to effect a Ferrier rearrangement . The olefin was then epoxidised with ...
... , different products are formed due to Wittig rearrangements. The process is efficient for ... allyl ethers, including those derived from primary, secondary, tertiary alcohols, and ...