14374-57-3Relevant academic research and scientific papers
Stereoselective Rhodium-Catalyzed Isomerization of Stereoisomeric Mixtures of Arylalkenes
Yang, Hongxuan,Dong, Wenke,Wang, Wencan,Li, Tao,Zhao, Wanxiang
supporting information, p. 2833 - 2840 (2020/10/06)
A new efficient method for the synthesis of a high ratio of E -alkenes from E / Z mixtures of alkenes with B 2pin 2in the presence of a rhodium catalyst is described. This reaction features mild reaction conditions, broad functional group tolerance, and highly great application potential.
Copper-free asymmetric allylic alkylation with grignard reagents
Jackowski, Olivier,Alexakis, Alexandre
supporting information; experimental part, p. 3346 - 3350 (2010/07/15)
(Chemical Equation Presented) Open wide and say AAA: The copper-free asymmetric allylic alkylation reaction of Crignard reagents, catalyzed by N-heter-ocyclic carbenes, is reported for allyl bromide derivatives. This reaction offers good enantioselectivit
Untersuchungen im Wittig-System nach einem ordnenden Konzept auf der Basis alternativer Prinzipien
Bandmann, Heinz,Bartik, Tamas,Bauckloh, Sylvia,Behler, Ansgar,Brille, Frank,et al.
, p. 193 - 204 (2007/10/02)
Our results show that the stereoselectivity of the Wittig-reaction can be controlled by the variation of substituents in accord with the ORDERING CONCEPT OF ALTERNATIV PRINCIPLES (individual pairs, known and unknown classes of alternatives).The "all-phenyl Wittig-system" having three phenyl groups on phosphorous two in ylid- and aldehyd-position was chosen as a standard for our investigations.Differentiation in ylid-position and compensation on phosphorous and aldehyd-position were observed by the comparison of "patterns".Consequently, most of the selectivity rules of Wittig-reactions can be explained by the differentiation through alternatives in the ylid-position.Inversion or conservation of the "patterns" of measured data points to the variation in structure of starting materials, reaction rates and selectivities.Amount-controls were also described in certain systems.
REDUCTIVE TRANSFORMATIONS WITH TRIMETHYLSILYL CHLORIDE-SODIUM IODIDE. A NEW SYNTHESIS OF 4H-1,3-OXAZINES
Ghera, Eugene,Maurya, Rakesh,Hassner, Alfred
, p. 4741 - 4744 (2007/10/02)
1-Arylalkenes and 1-arylalkanols are reduced to arylalkanes on heating with trimethylsilyl chloride/sodium iodide in CH3CN.Under similar conditions enones, dialkylated in the β-position of the double bond, give 4H-1,3-oxazines.
REACTIONS EN MILIEU HETEROGENE SOLIDE-LIQUIDE FAIBLEMENT HYDRATE : LA REACTION DE WITTIG DANS LE SYSTEME HYDROXIDES ALCALINS/SOLVANT ORGANIQUE APROTIQUE
Le Bigot, Yves,Delmas, Michel,Gaset, Antoine
, p. 1057 - 1072 (2007/10/02)
The Wittig reaction carried out in a slightly hydrated solid-liquid media constituted by a solid alkaline hydroxide and an organic phase which includes the phosphonium salt and the aldehyde leads easily to the corresponding alkene with very good yields specially with furanic aldehydes.The ylide formation at the interface appears as the most important step of this condensation.
REACTIONS EN MILIEU HETEROGENE SOLIDE-LIQUIDE FAIBLEMENT HYDRATE: II - LA REACTION DE WITTIG DANS LES SYSTEMES CARBONATES ALCALINS/SOLVANT ORGANIQUE APROTIQUE
Bigot, Yves Le,Delmas, Michel,Gaset, Antoine
, p. 339 - 350 (2007/10/02)
The use of alkaline carbonates in a slighty hydrated solid-liquid aprotic organic media allowed the synthesis of alkenes from polyfunctionnal aldehydes or activated ketones with high yield in a Z preferential stereochemistry.The reaction mechanism proposed takes in account the specific use of water on the solvation of cationic species at the solid-liquid interface to explain the Z.E alkene ratio.
