Ryan A. Ivanovich
University of Ottawa
15 Papers
32 Citations
Ryan A. Ivanovich is an academic researcher from University of Ottawa. The author has contributed to research in topics: Reactivity (chemistry) & Catalysis. The author has an hindex of 6, co-authored 14 publications.
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Papers
Cascade reactions of nitrogen-substituted isocyanates: a new tool in heterocyclic chemistry
Jean-François Vincent-Rocan,Ryan A. Ivanovich,Christian Clavette,Kyle Leckett,Julien Bejjani,Andre M. Beauchemin +5 more
TL;DR: In this article, a blocked (masked) N-isocyanate approach was proposed to enable the use of various precursors to assemble heterocycles possessing the N-N-CO motif, which is often found in agrochemicals and pharmaceuticals.
Photocatalytic Intramolecular C-H Amination Using N-Oxyureas as Nitrene Precursors.
TL;DR: Preliminary mechanistic results are consistent with the formation of free carbamoyl triplet nitrenes as reactive intermediates and C-H amination forming imidazolidinones and related nitrogen heterocycles from readily accessible hydroxylamine precursors.
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One-Pot Synthesis of Aza-Diketopiperazines Enabled by Controlled Reactivity of N-Isocyanate Precursors
Ryan A. Ivanovich,Jean-François Vincent-Rocan,Eslam B. Elkaeed,Eslam B. Elkaeed,Andre M. Beauchemin +4 more
TL;DR: This approach highlights that βN-acyl carbazates can act as blocked (masked) N-isocyanates, thus allowing a challenging intermolecular SN2 reaction of a primary amine to proceed while the N- isocyanate is "protected", and then cyclization once it is unmasked.
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Intramolecular Alkene Aminocarbonylation Using Concerted Cycloadditions of Amino-Isocyanates.
Ryan A. Ivanovich,Christian Clavette,Jean-François Vincent-Rocan,Jean‐Gregoire Roveda,Serge I. Gorelsky,Andre M. Beauchemin +5 more
TL;DR: Improved conditions for concerted intramolecular alkene aminocarbonylation with N-isocyanates are reported, and the use of βN-benzyl carbazate precursors allows the effective minimization of N- isocyanate dimerization.
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Synthesis of N-Oxyureas by Substitution and Cope-Type Hydroamination Reactions Using O-Isocyanate Precursors
TL;DR: Suitable precursors are exploited, offering improved versatility in the synthesis of N-oxyureas, and the controlled reactivity of masked O-isocyanates are demonstrated.
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