Sithamalli V. Chandramouli

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Tetrahedron Letters | 1994

Catalytic palladium-mediated tetraene carbocyclizations: diastereoselective deuteration and its convenient analysis by a difference spin polarization transfer (DSPT) NMR experiment

James M. Takacs; Sithamalli V. Chandramouli; Richard K. Shoemaker

Abstract The palladium-catalyzed cascade cyclization of certain tetraene substrates proceeds in the presence of a deuterium source with stereoselective deuteration exocyclic to the newly formed carbocycle. The diastereoselectivity is established via the novel application of a difference spin polarization transfer (DSPT) NMR experiment.

Tetrahedron Letters | 1994

Catalytic palladium-mediated tetraene carbocyclizations: The efficient stereochemical control of newly formed methyl-bearing stereocenters

James M. Takacs; Sithamalli V. Chandramouli

Abstract Certain tetraene substrates bearing a trisubstituted double bond as part of one of the diene subunits undergo palladium-catalyzed cascade cyclization to afford cyclized products in which a new methyl-bearing stereocenter is generated in a stereoselective fashion.

Journal of the American Chemical Society | 2004

Diastereoselective alkylation of β-amino esters: Structural and rate studies reveal alkylations of hexameric lithium enolates

Anne J. McNeil; Gilman E. S. Toombes; Sol M. Gruner; Emil B. Lobkovsky; David B. Collum; Sithamalli V. Chandramouli; Benoit J. Vanasse; Timothy A. Ayers

Journal of Organic Chemistry | 1993

Catalytic palladium-mediated tetraene carbocyclizations: 1,2- and 1,4-stereochemical control in a polycyclization reaction

James M. Takacs; Sithamalli V. Chandramouli

Organometallics | 1990

Catalytic transition-metal-mediated tetraene carbocyclizations : a new carbocyclization via hydrosilylation ?

James M. Takacs; Sithamalli V. Chandramouli

Journal of the American Chemical Society | 1992

Catalytic palladium-mediated tetraene carbocyclizations : the cycloisomerizations of acyclic tetraenes to cyclized trienes

James M. Takacs; Jingyang Zhu; Sithamalli V. Chandramouli

Journal of the American Chemical Society | 2004

Characterization of β-Amino Ester Enolates as Hexamers via 6Li NMR Spectroscopy

Anne J. McNeil; Gilman E. S. Toombes; Sithamalli V. Chandramouli; Benoit J. Vanasse; Timothy A. Ayers; Michael K. O'Brien; Emil B. Lobkovsky; Sol M. Gruner; David B. Collum

Journal of the American Chemical Society | 2002

Acyclic Diastereoselection in Prochiral Radical Addition to Prochiral Olefins

Mukund P. Sibi; Tara R. Rheault; Sithamalli V. Chandramouli; Craig P. Jasperse

Journal of the American Chemical Society | 1997

Catalytic palladium-mediated bisdiene carbocyclizations: Bisdiene to enediene cycloisomerizations

James M. Takacs; Francis Clement; Jingyang Zhu; Sithamalli V. Chandramouli; Xiaoping Gong

Organic Process Research & Development | 2012

Scale-Up of an Enantioselective Overman Rearrangement for an Asymmetric Synthesis of a Glycine Transporter 1 Inhibitor

Sithamalli V. Chandramouli; Timothy A. Ayers; Xiao-Dong Wu; Loc T. Tran; James Peers; Rocco Disanto; Frederick Roberts; Narendra Kumar; Ying Jiang; Nakyen Choy; Clive Pemberton; Matthew R. Powers; Anthony J. Gardetto; Geoffrey A. D’Netto; Xuemin Chen; Juan Antonio Gamboa; Duc P. Ngo; Warren Copeland; Duane E. Rudisill; Andrew W. Bridge; Benoit J. Vanasse; David J. Lythgoe

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