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Publications and Presentations

Select year range: 1978 - 1990 | 1991 - 1995 | 1996 - 1999 | 2000 - 2004

Links to the pdf-version of papers are provided for convenience only. Users must have Acrobat Reader and must have access to the journal sites. The following list of publications can also be downloaded as pdf-file.

:: Research Publications 1991 - 1995

(26) T. L. Amyes and J. P. Richard, "Carbocation Lifetimes that are Independent of Carbocation Stability: The Reaction of α-Substituted 4-Methoxybenzyl Carbocations", Journal of the Chemical Society, Chemical Communications, 200-202 (1991).

(27) T. L. Amyes and J. P. Richard, "Kinetic and Thermodynamic Stability of a-Azidobenzyl Carbocations: Putative Intermediates in the Schmidt Reaction", Journal of the American Chemical Society, 113, 1867-1869 (1991).

(28) J. P. Richard, "Kinetic Parameters for the Elimination Reaction Catalyzed by Triosephosphate Isomerase and an Estimation of the Reaction's Physiological Significance", Biochemistry, 30, 4581-4585 (1991).

(29) J. P. Richard, "Mechanisms for the Uncatalyzed and Hydrogen Ion Catalyzed Reactions of a Simple Quinone Methide with Solvent and Halide Ions", Journal of the American Chemical Society, 113, 4588-4595 (1991).

(30) J. P. Richard, T. L. Amyes and T. Vontor, "Absence of Nucleophilic Assistance by Solvent and Azide Ion to the Reaction of Cumyl Derivatives: Mechanism of Nucleophilic Substitution at Tertiary Carbon", Journal of the American Chemical Society, 113, 5871-5873 (1991).

(31) J. P. Richard, T. L. Amyes and I. W. Stevens, "Generation and Determination of the Lifetime of an a-Carbonyl Substituted Carbocation", Tetrahedron Letters, 32, 4255-4258 (1991).

(32) T. L. Amyes and J. P. Richard, "How Do Reaction Mechanisms Change? Appearance of Concerted Pericyclic Elimination for the Reaction of Cumyl Derivatives", Journal of the American Chemical Society, 113, 8960-8961 (1991).

(33) J. P. Richard, "On the Importance of Reactions of Carbocation Ion Pairs in Water: Common Ion Inhibition of Solvolysis of 1-(4-Methoxyphenyl)-2,2,2-trifluoroethyl Bromide and Trapping of an Ion-Pair Intermediate by Solvent", Journal of Organic Chemistry, 57, 625-629 (1992).

(34) J. P. Richard, T. L. Amyes and T. Vontor, "Reactions of Ring-Substituted 1-Phenyl-2,2,2-trifluoroethyl Carbocations with Nucleophilic Reagents: A Bridge Between Carbocations Which Follow the Reactivity-Selectivity "Principle" and the N+ Scale", Journal of the American Chemical Society, 114, 5626-5634 (1992).

(35) T. L. Amyes, J. P. Richard and M. Novak, "Experiments and Calculations for Determination of the Stabilities of Benzyl, Benzhydryl and Fluorenyl Carbocations: Antiaromaticity Revisited", Journal of the American Chemical Society, 114, 8032-8041 (1992).

(36) T. L. Amyes and J. P. Richard, "Generation and Stability of a Simple Thiol Ester Enolate in Aqueous Solution", Journal of the American Chemical Society, 114, 10297-10302 (1992).

(37)V. Jagannadham, T. L. Amyes and J. P. Richard, "How Delocalised are Resonance-stabilised 1-[4-(N-Methyl-N-alkylamino)phenyl]-2,2,2-trifluoroethyl Carbocations?", Journal of the Chemical Society, Perkin Transactions 2, 171-174 (1993).

(38) J. P. Richard and P. E. Yeary, "On the Importance of Carbocation Intermediates in Bimolecular Nucleophilic Substitution Reactions in Aqueous Solution", Journal of the American Chemical Society, 115, 1739-1744 (1993).

(39) J. P. Richard, T. L. Amyes and D. J. Rice, "Effects of Electronic Geminal Interactions on the Solvolytic Reactivity of Methoxymethyl Derivatives", Journal of the American Chemical Society, 115, 2523-2524 (1993).

(40)V. Jagannadham, T. L. Amyes and J. P. Richard, "Kinetic and Thermodynamic Stabilities of a-Oxygen- and a-Sulfur-Stabilized Carbocations in Solution", Journal of the American Chemical Society, 115, 8465-8466 (1993).

(41) T. L. Amyes, I. W. Stevens and J. P. Richard, "The Effects of a-Substituents on the Kinetic and Thermodynamic Stability of 4-Methoxybenzyl Carbocations: Carbocation Lifetimes that are Independent of their Thermodynamic Stability", Journal of Organic Chemistry, 58, 6057-6066 (1993).

(42)R. A. McClelland, F. L. Cozens, S. Steenken, T. L. Amyes and J. P. Richard, "Direct Observation of b-Fluoro-substituted 4-Methoxyphenethyl Cations by Laser Flash Photolysis", Journal of the Chemical Society, Perkin Transactions 2, 1717-1722 (1993).

(43) J. P. Richard, "Effect of Electron-Withdrawing a-Substituents on Nucleophile Selectivity toward 4-Methoxybenzyl Carbocations: Selectivities that are Independent of Carbocation Stability", Journal of Organic Chemistry, 59, 25-29 (1994).

(44) J. P. Richard, V. Jagannadham, T. L. Amyes, M. Mishima and Y. Tsuno, "A Comparison of Substituent Effects on the Stability of a,a-Dimethylbenzyl Carbocations in Aqueous Solution and in the Gas Phase: How Significant is Nucleophilic Solvation?", Journal of the American Chemical Society, 116, 6706-6712 (1994).

(45) J. P. Richard, T. L. Amyes, Y.-G. Lee and V. Jagannadham, "Demonstration of the Chemical Competence of an Iminodiazonium Ion to Serve as the Reactive Intermediate of a Schmidt Reaction", Journal of the American Chemical Society, 116, 10833-10834 (1994).

(46) J. P. Richard, "A Consideration of the Barrier for Carbocation-Nucleophile Combination Reactions", Tetrahedron Report Number 365, Tetrahedron, 51, 1535-1573 (1995).

(47)R. W. Nagorski, T. Mizerski and J. P. Richard, "Absolute and Relative Electrophilicities of a Carbonyl Group and Tertiary Ammonium Ions toward a Simple Enolate Ion", Journal of the American Chemical Society, 117, 4718-4719 (1995).

(48) J. P. Richard, T. L. Amyes, V. Jagannadham, Y.-G. Lee and D. J. Rice, "Spontaneous Cleavage of gem-Diazides: A Comparison of the Effects of a-Azido and Other Electron-Donating Groups on the Kinetic and Thermodynamic Stability of Benzyl and Alkyl Carbocations in Aqueous Solution", Journal of the American Chemical Society, 117, 5198-5205 (1995).

(49) J. P. Richard, R. W. Nagorski, S. Rudich, T. L. Amyes, A. R. Katritzky and A. P. Wells, "Nucleofugality of the Benzotriazole Group in Solvolysis", Journal of Organic Chemistry, 60, 5989-5991 (1995).

(50) J. P. Richard, J. G. Westerfeld and S. Lin, "Structure-Reactivity Relationships for b-Galactosidase (Escherichia coli, lac Z). 1. Broensted Parameters for Cleavage of Alkyl b‑D-Galactopyranosides", Biochemistry, 34, 11703-11712 (1995).

(51) J. P. Richard, J. G. Westerfeld, S. Lin and J. Beard, "Structure-Reactivity Relationships for b-Galactosidase (Escherichia coli, lac Z). 2. Reactions of the Galactosyl-Enzyme Intermediate with Alcohols and Azide Ion", Biochemistry, 34, 11713-11724 (1995).



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