Zobrazeno 1 - 10
of 19
pro vyhledávání: '"Tapan Maji"'
Publikováno v:
Journal of Molecular Catalysis A: Chemical. 424:145-152
The (DIOP)rhodium-catalyzed hydroformylation of butadiene has been shown to give among the highest selectivities for formation of adipaldehyde, which is useful for the synthesis of nylon. Herein, isomerizing hydroformylation is shown to be a mechanis
Publikováno v:
ChemCatChem. 8:3343-3346
Autor:
Jon A. Tunge, Tapan Maji
Publikováno v:
Organic Letters. 17:4766-4769
An interceptive decarboxylative allylation protocol has been developed utilizing pyrone as a C4 synthon. This palladium-catalyzed transformation difunctionalizes the pyrone moiety by in situ generation and activation of both the electrophile and nucl
Publikováno v:
Organic letters. 19(15)
A new method is developed for the synthesis of spirooxindoles from amines and isatins via C–H functionalization. The reaction leverages the tert-amino effect to form an enolate–iminium intermediate via [1,5]-hydride shift followed by cyclization.
Autor:
Jon A. Tunge, Tapan Maji
Publikováno v:
ChemInform. 47
An interceptive decarboxylative allylation protocol has been developed utilizing pyrone as a C4 synthon. This palladium-catalyzed transformation difunctionalizes the pyrone moiety by in situ generation and activation of both the electrophile and nucl
Publikováno v:
ChemInform. 46
The retro-Claisen activation is applicable to primary and secondary benzyl alcohols and hetarylmethyl alcohols.
Autor:
Tapan Maji, Jon A. Tunge
Publikováno v:
ChemInform. 46
The method utilizes an aldehyde to activate nitriles toward α-allylation and prevent multiple allylations.
Publikováno v:
Tetrahedron. 62:8959-8965
Chloramphenicol and thiamphenicol have been enantioselectively synthesized using an asymmetric halohydrin reaction as a key step. In particular, halomethoxylation reaction was used, where O-methyl functions as a hydroxyl protecting group and eliminat
Publikováno v:
Chemical communications (Cambridge, England). 50(90)
A new strategy has been developed for the benzylation of nitriles directly from benzyl alcohols. In this process benzyl alcohols undergo retro-Claisen activation with cyanoacetic esters to generate an active electrophile and a carbanionic nucleophile
Autor:
Tapan Maji, Jon A. Tunge
Publikováno v:
Organic letters. 16(19)
α-Cyano aldehydes undergo selective transition-metal-catalyzed monoallylation to provide α-allylated nitriles. The transformation leads to linear substitution products with palladium catalysts or branched allylated nitriles using an iridium catalys