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Henry J. Callot

University of Ottawa

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Featured researches published by Henry J. Callot.

Journal of The Chemical Society D: Chemical Communications | 1970

The Diels–Alder addition of dimethyl vinylphosphonates to cyclopentadienes: stereochemistry of the reaction using nuclear magnetic resonance spectroscopy

Henry J. Callot; Claude Benezra

The configurations of the adducts of dimethyl vinylphosphonate with cyclopentadiene, hexachlorocyclopentadiene, dimethoxytetrachlorocyclopentadiene, and pentachlorocyclopentadiene are established by n.m.r.

Journal of The Chemical Society-perkin Transactions 1 | 1975

Cyanoporphyrins. Co-ordinating and electrochemical properties

Henry J. Callot; Alain Giraudeau; Maurice Gross

Successive substitutions in the pyrrole rings of tetraphenylporphyrin by up to four cyano-groups lead to large additive anodic shifts of the redox potentials. These shifts are large than those observed with other electron-withdrawing substituents. The stoicheiometry and stability of the complexes formed from metallotetracycanoporphyrins (Cu, Ni, Ag) and nitrogenous bases (pyridine, piperidine) are determined. A novel five-co-ordinate silver(II) porphyrin is reported.

Journal of the American Chemical Society | 1979

Substituent effects in the electroreduction of porphyrins and metalloporphyrins

Alain Giraudeau; Henry J. Callot; Joseph Jordan; I. Ezhar; Maurice Gross

Journal of the American Chemical Society | 1975

Rearrangement of N-substituted porphyrins. Preparation and structure of homoporphyrins

Henry J. Callot; Theophile Tschamber

Canadian Journal of Chemistry | 1970

Bicyclo[2,2,1]heptylphosphonates II. Stéréochimie de l'addition de Diels–Alder du vinylphosphonate de diméthyle sur quelques cyclopentadiènes; étude par r.m.n.

Henry J. Callot; Claude Benezra

Canadian Journal of Chemistry | 1972

The Stereochemistry of the Addition of Two Diazoalkanephosphonates to Norbornene and Norbornadiene; Photolysis of the Adducts. An Entry into the Dimethyl Tricyclo[2.1.1.02.4]octyl Phosphonate System

Henry J. Callot; Claude Benezra

ChemInform | 1979

Effects of Electron-Withdrawing Substituents on the Electrochemical Oxidation of Porphyrins

Alain Giraudeau; Henry J. Callot; Maurice Gross

Journal of Mass Spectrometry | 1971

Spectres de masse de phosphonates diméthyliques dérivés du norbornane, du norbornéne et du nortricyclane

Henry J. Callot; Claude Benezra

Journal of the American Chemical Society | 1975

Acid catalyzed isomerization and thermal rearrangement of nickel homoporphyrins

Henry J. Callot; Theophile Tschamber; E. Schaeffer

Canadian Journal of Chemistry | 1971

Bicyclo[2.2.1]heptyl phosphonates. III. Radical Addition of Dimethyl Phosphonate to Norbornadiene

Henry J. Callot; Claude Benezra

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Maurice Gross

Centre national de la recherche scientifique

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Claude Benezra

University of Ottawa

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Alain Giraudeau

University of Strasbourg

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Théophile Tschamber

École Normale Supérieure

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Alain Giraudeau

University of Strasbourg

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Joseph Jordan

Pennsylvania State University

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