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Dive into the research topics where John M. Gardlik is active.

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Featured researches published by John M. Gardlik.


Tetrahedron Letters | 1979

Bond fixation in annulenes. 7. Direct resolution of chiral cyclooctatetraenes

John M. Gardlik; Leo A. Paquette

Abstract Cycloaddition of an optically pure triazolinedione to a racemic cyclooctatetraene, followed by separation of the resulting diastereomers and hydrolysis-oxidation, deliveers the polyolefin in high enantiomeric purity.


Journal of the American Chemical Society | 1977

Dicyclooctatetraeno[1,2:4,5]benzene dianion and tetraanion. Experimental assessment of extended paratropic vs. restricted diatropic .pi.-electron delocalization

Leo A. Paquette; Gary D. Ewing; Sean G. Traynor; John M. Gardlik


Journal of the American Chemical Society | 1980

Bond fixation in annulenes. 9. Equalization of ring inversion and bond shifting energetics in 1,2,3,4-tetramethylcyclooctatetraene. Asymmetric synthesis direct resolution, and absolute configuration of the optically active hydrocarbon

Leo A. Paquette; John M. Gardlik; Larry K. Johnson; Kevin J. McCullough


Journal of the American Chemical Society | 1979

Bond fixation in annulenes. 6. Equalization of ring inversion and bond shifting energetics in methyl-substituted cyclooctatetraenes. Use of buttressing effects for comparing transition-state geometries

John M. Gardlik; Leo A. Paquette; Rolf Gleiter


Journal of the American Chemical Society | 1983

Bond fixation in annulenes. 15. A titanium(0)-mediated synthesis of a cyclooctatetraene. Probe of the relative size of the interstitial phenyl substituent in 1,3-dimethyl-2-phenylcyclooctatetraene by means of racemization kinetics

Leo A. Paquette; John M. Gardlik; Kevin J. McCullough; Yuji Hanzawa


Journal of the American Chemical Society | 1980

Bond fixation in annulenes. 8. Assessment of the ring inversion and bond shifting barriers in 1,2,3-trimethylcyclooctatetraene. Resolution, absolute configuration, and circular dichroic behavior of an [8]annulene hydrocarbon

Leo A. Paquette; John M. Gardlik


Journal of the American Chemical Society | 1980

Bond fixation in annulenes. 10. Utilization of buttressing effects for comparing ring inversion and .pi. bond shifting transition state geometries in cyclooctatetraenes

Leo A. Paquette; John M. Gardlik


Journal of the American Chemical Society | 1983

Bond fixation in annulenes. 16. Synthesis of the 1,2-dimethyl-3-phenylcyclooctatetraene .dblarw. 1,8-dimethyl-2-phenylcyclooctatetraene bond shift isomer pair. Probe of the relative size of a flanking phenyl substituent by means of racemization kinetics

Leo A. Paquette; John M. Gardlik; Kevin J. McCullough; Rodney Samodral; George DeLucca; Robert J. Ouellette


Journal of the American Chemical Society | 1976

Bond fixation in annulenes. 4. The ability of 1,2,3-trimethylcyclooctatetraene to support optical activity

Leo A. Paquette; John M. Gardlik; James M. Photis


Journal of the American Chemical Society | 1979

Bond fixation in annulenes. 5. Absolute configuration and chiroptical properties of optically active 1,2,3-trimethyl- and 1,2,3,4-tetramethylcyclooctatetraenes

John M. Gardlik; Larry K. Johnson; Leo A. Paquette; Barbara Solheim; James P. Springer; Jon Clardy

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Yuji Hanzawa

Showa Pharmaceutical University

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