51632-18-9Relevant academic research and scientific papers
Enantioselective Rhodium-Catalyzed Allylic Alkylation of Prochiral α,α-Disubstituted Aldehyde Enolates for the Construction of Acyclic Quaternary Stereogenic Centers
Wright, Timothy B.,Evans, P. Andrew
supporting information, p. 15303 - 15306 (2016/12/09)
A highly enantioselective rhodium-catalyzed allylic alkylation of prochiral α,α-disubstituted aldehyde enolates with allyl benzoate is described. This protocol provides a novel approach for the synthesis of acyclic quaternary carbon stereogenic centers and it represents the first example of the direct enantioselective alkylation of an aldehyde enolate per se. The versatility of the α-quaternary aldehyde products is demonstrated through their conversion to a variety of useful motifs applicable to target-directed synthesis. Finally, mechanistic studies indicate that high levels of asymmetric induction are achieved from a mixture of prochiral (E)- and (Z)-enolates, which provides an exciting development for this type of transformation.
A one-pot umpolung method for preparation of α-aryl nitriles from α-chloro aldoximes via organocuprate additions to transient nitrosoalkenes
Sengupta, Ritobroto,Weinreb, Steven M.
, p. 2933 - 2937 (2012/10/29)
Conjugate addition of a variety of aryl lithiocyanocuprates to nitrosoalkenes generated from α-chloro aldoximes, followed by in situ dehydration of the crude α-aryl aldoxime product with N,N- dicyclohexylcarbodiimide, affords α-aryl nitriles in good overall yields via a one-pot protocol. Georg Thieme Verlag Stuttgart ? New York.
Method for the alkylation of phenylacetonitriles
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, (2008/06/13)
A method for the alkylation of certain substituted phenylacetonitriles with alkylhalides in the presence of solid particulated alkali metal hydroxides under essentially anhydrous conditions. Trialkylamine catalysts may optionally be utilized. Compounds obtained by this method, some of which are valuable intermediates in the preparation of pyrethroid pesticides, are described.
M-phenoxybenzyl and α-cyano-M-phenoxybenzyl esters of 2-haloalkyl (oxy-, thio-, sulfinyl-, or sulfonyl)phenylalkanoic acids
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, (2008/06/13)
The invention is m-phenoxybenzyl esters of 2-haloalkyl(oxy-, thio-, sulfinyl-, or sulfonyl)phenylalkanoic acids which are useful insecticidal and acaricidal agents.
2-Haloalkyl(oxy-, thio-, sulfinyl-, or sulfonyl)-phenylalkanoic acids
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, (2008/06/13)
The invention is 2-haloalkyl(oxy-, thio-, sulfinyl-, or sulfonyl)phenylalkanoic acids which are useful intermediates in the preparation of insecticides of m-phenoxybenzyl and α-cyano-m-phenoxybenzyl esters.
Insecticidal esters of substituted furan methanol
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, (2008/06/13)
Substituted acetate compounds represented by the formula STR1 which are useful as pesticides and pesticidal composition containing the substituted acetate compounds as active ingredients, as well as processes for preparing the compounds and the compositio
