Bypassing the lack of reactivity of endo-substituted norbornenes with the catalytic rectification–insertion mechanism

B Commarieu, JP Claverie - Chemical Science, 2015 - pubs.rsc.org
The catalytic 1, 2-insertion polymerization of polar norbornenes (NBEs) leads to the
formation of functional rigid macromolecules with exceptional thermal, optical and …

Micellar Mechanisms for Desymmetrization Reactions in Aqueous Media

S Niwayama, Y Hiraga - ACS omega, 2023 - ACS Publications
Water-mediated organic reactions significantly contribute to the protection of the
environment. Desymmetrization reactions, which convert only one of the identical functional …

Synthesis of polynorbornadienes by ring-opening metathesis polymerization and their saturated derivatives bearing various ester groups and carboxyl groups

X Lin, J Shi, S Niwayama - RSC advances, 2023 - pubs.rsc.org
Various symmetric and non-symmetric polynorbornadienes having a variety of ester groups
and carboxyl groups were synthesized by ring-opening metathesis polymerization (ROMP) …

Non-Enzymatic Desymmetrization Reactions in Aqueous Media

S Niwayama - Symmetry, 2021 - mdpi.com
Symmetric organic compounds are generally obtained inexpensively, and therefore they can
be attractive building blocks for the total synthesis of various pharmaceuticals and natural …

Synthesis of norbornane bisether antibiotics via silver-mediated alkylation

SM Hickey, TD Ashton, JM White, J Li, RL Nation… - RSC …, 2015 - pubs.rsc.org
A small series of norbornane bisether diguanidines have been synthesized and evaluated
as antibacterial agents. The key transformation—bisalkylation of norbornane diol 6—was not …

Enantioselective total synthesis of (−)-laurenditerpenol

EN Pitsinos, N Athinaios, VP Vidali - Organic letters, 2012 - ACS Publications
A highly convergent total synthesis of (−)-laurenditerpenol has been accomplished through
an organolithium to aldehyde nucleophilic addition. Preparation of the prerequisite key …

Selective monooxidation of symmetric dialdehydes in aqueous media

P Kattanguru, R Ogawa, Y Suzuki, S Niwayama - Tetrahedron Letters, 2024 - Elsevier
Selective monooxidation of symmetric dialdehydes in aqueous media have been
investigated for several symmetric dialdehydes. The best conditions apply 1.1 equivalents of …

A Simple Method for Resolution of Endo‐/Exo‐Monoesters of Trans‐Norborn‐5‐Ene‐2,3‐Dicarboxylic Acids Into Their Enantiomers

VN Kovalenko, YY Kozyrkov - Chirality, 2015 - Wiley Online Library
Separation of optical isomers obtainable from trans‐norborn‐5‐ene‐2, 3‐dicarboxylic acid
methyl and tert‐butyl monoesters was performed by crystallization of the respective salts …

Syntheses of polynorbornadienes by ring-opening metathesis polymerizations of symmetric and non-symmetric 2, 3-bis (alkoxycarbonyl) norbornadienes and their …

J Shi, Y Hayashishita, T Takata, Y Nishihara… - Organic & …, 2020 - pubs.rsc.org
Libraries of polynorbornadienes were synthesized with good yields with a ruthenium-
containing 2nd generation Grubbs catalyst by ring-opening metathesis polymerization …

Practical selective monohydrolysis of bulky symmetric diesters: Comparing with sonochemistry

J Shi, T Zhao, S Niwayama - Tetrahedron, 2018 - Elsevier
The conditions of the practical selective monohydrolysis of symmetric diesters we previously
reported have been modified and applied to selective monohydrolysis of bulky symmetric …