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Dive into the research topics where Constance A. Johnson is active.

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Featured researches published by Constance A. Johnson.


Tetrahedron Letters | 1982

The dependence of 13C-1H coupling constants on CCC bond angles

Mary W. Baum; Alberto Guenzi; Constance A. Johnson; Kurt Mislow

Abstract The relationship between one-bond 13 C- 1 H coupling constants and internuclear CCC bond angles ( n ) in hydrocarbons of the type R 2 CH 2 is best approximated by a quadratic expression.


Journal of the American Chemical Society | 1981

Stereoisomerism and correlated rotation in molecular gear systems. Residual diastereomers of bis(2,3-dimethyl-9-triptycyl)methane

Franco Cozzi; Alberto Guenzi; Constance A. Johnson; Kurt Mislow; W. Douglas Hounshell; John F. Blount


Journal of the American Chemical Society | 1983

Dynamic gearing and residual stereoisomerism in labeled bis(9-triptycyl)methane and related molecules. Synthesis and stereochemistry of bis(2,3-dimethyl-9-triptycyl)methane, bis(2,3-dimethyl-9-triptycyl)carbinol, and bis(1,4-dimethyl-9-triptycyl)methane

Alberto Guenzi; Constance A. Johnson; Franco Cozzi; Kurt Mislow


Proceedings of the National Academy of Sciences of the United States of America | 1980

Stereochemical consequences of dynamic gearing in substituted bis(9-triptycyl) methanes and related molecules

W. Douglas Hounshell; Constance A. Johnson; Alberto Guenzi; Franco Cozzi; Kurt Mislow


Journal of the American Chemical Society | 1981

Restricted gearing and residual stereoisomerism in bis(1,4-dimethyl-9-triptycyl)methane

Constance A. Johnson; Alberto Guenzi; Kurt Mislow


Journal of the American Chemical Society | 1982

Crystal and molecular structure of bis(9-triptycyl) ketone and bis(9-triptycyl)methane

Constance A. Johnson; Alberto Guenzi; Robert B. Nachbar; John F. Blount; Olof Wennerstroem; Kurt Mislow


Journal of Organic Chemistry | 1982

Structure and internal dynamics of systems containing two or more tert-butyl groups in close proximity

Robert B. Nachbar; Constance A. Johnson; Kurt Mislow


Journal of the American Chemical Society | 1984

A new NMR method for measuring the difference between corresponding proton and deuterium chemical shifts: isotope effects on exchange equilibria

Martin Saunders; Susan Saunders; Constance A. Johnson


ChemInform | 1982

RESTRICTED GEARING AND RESIDUAL STEREOISOMERISM IN BIS(1,4-DIMETHYL-9-TRIPTYCYL)METHANE

Constance A. Johnson; A. Guenzi; Kurt Mislow


ChemInform | 1983

DYNAMIC GEARING AND RESIDUAL STEREOISOMERISM IN LABELED BIS(9-TRIPTYCYL)METHANE AND RELATED MOLECULES. SYNTHESIS AND STEREOCHEMISTRY OF BIS(2,3-DIMETHYL-9-TRIPTYCYL)METHANE, BIS(2,3-DIMETHYL-9-TRIPTYCYL)CARBINOL, AND BIS(1,4-DIMETHYL-

Alberto Guenzi; Constance A. Johnson; Franco Cozzi; Kurt Mislow

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