Results 21 to 30 of about 115,061 (305)

One-pot synthesis of epoxides from benzyl alcohols and aldehydes

Beilstein Journal of Organic Chemistry, 2018
A one-pot synthesis of epoxides from commercially available benzyl alcohols and aldehydes is described. The reaction proceeds through in situ generation of sulfonium salts from benzyl alcohols and their subsequent deprotonation for use in Corey ...
Edwin Alfonzo, Jesse W. L. Mendoza, Aaron B. Beeler   +2 more
doaj   +1 more source

Enantioselective Synthesis of 2,2-Disubstituted Terminal Epoxides via Catalytic Asymmetric Corey-Chaykovsky Epoxidation of Ketones

Molecules, 2012
Catalytic asymmetric Corey-Chaykovsky epoxidation of various ketones with dimethyloxosulfonium methylide using a heterobimetallic La-Li3-BINOL complex (LLB) is described.
Shigeki Matsunaga, Masakatsu Shibasaki, Toshihiko Sone, Akitake Yamaguchi   +3 more
doaj   +1 more source

A Diastereoselective Synthetic Approach towards the Synthesis of Berkeleylactone F and Its 4-epi-Derivative

SynOpen, 2020
A diastereoselective approach to the synthesis of berkeleylactone F is presented. The synthetic strategy is initiated with commercially available (R)-glycidol, 1,6-heptadiyne, and (R)-(+)-methyl lactate.
Srijana Subba, Sumit Saha, Susanta Mandal   +2 more
doaj   +1 more source

A New Stereoselective Approach to the Substitution of Allyl Hydroxy Group in para-Mentha-1,2-diol in the Search for New Antiparkinsonian Agents

Molecules, 2023
Two approaches to the synthesis of para-menthene epoxide ((1S,5S,6R)-4) are developed. The first approach includes a reaction between chlorohydrin 7 and NaH in THF. The second involves the formation of epoxide in the reaction of corresponding diacetate 6
Alexandra V. Podturkina, Oleg V. Ardashov, Konstantin P. Volcho, Nariman F. Salakhutdinov   +3 more
doaj   +1 more source

Water and Aqueous Mixtures as Convenient Alternative Media for Organoselenium Chemistry

Molecules, 2016
Even if water is the natural environment for bioorganic reactions, its use in organic chemistry is often severely limited by the high insolubility of the organic derivatives.
Claudio Santi, Raquel G. Jacob, Bonifacio Monti, Luana Bagnoli, Luca Sancineto, Eder J. Lenardão   +5 more
doaj   +1 more source

A Direct Method for Synthesis of Quinoxalines and Quinazolinones Using Epoxides as Alkyl Precursor

Molecules, 2023
An iodine-mediated one-pot synthesis of pyrrolo/indolo [1,2-a]quinoxalines and quinazolin-4-one via utilizing epoxides as alkyl precursors under metal-free conditions has been described.
Xueyan Lv, Lili Lv, Shichen Li, Chengcheng Ding, Bingchuan Yang, Chen Ma   +5 more
doaj   +1 more source

Catalytic Annulation of Epoxides with Heterocumulenes by the Indium-Tin System

Molecules, 2018
In the synthesis of five-membered heterocycles by the annulation of epoxides with heterocumulenes such as carbon dioxide and isocyanates, we developed the indium-tin catalytic system and synthesized various cyclic adducts including novel types products ...
Itaru Suzuki, Akira Imakuni, Akio Baba, Ikuya Shibata   +3 more
doaj   +1 more source

Organocatalyzed enantioselective desymmetrization of aziridines and epoxides

Beilstein Journal of Organic Chemistry, 2013
Enantioselective desymmetrization of meso-aziridines and meso-epoxides with various nucleophiles by organocatalysis has emerged as a cutting-edge approach in recent years.
Ping-An Wang
doaj   +1 more source

Enantioselective synthesis of (+)-petromyroxol, enabled by rhodium-catalyzed denitrogenation and rearrangement of a 1-sulfonyl-1,2,3-triazole [PDF]

, 2015
Petromyroxol is a non-racemic mixture of enantiomeric oxylipids isolated from water conditioned with larval sea lamprey. The (+)-antipode exhibits interesting biological properties but only 1 mg was isolated from >100000 L of water.
Boyer, Alistair
core   +2 more sources

Oxidation of cycloalkene using supported ruthenium catalysts under solvent-free conditions [PDF]

Chemical Industry and Chemical Engineering Quarterly, 2022
The present paper employs supported ruthenium nanoparticles alongside catalytic quantities of the radical initiator, which are proven to be capable of cyclooctene oxidation with green conditions, in the absence of solvent, with air as the main oxidant ...
Alsaiari Raiedhah Abdullah
doaj   +1 more source