Results 121 to 130 of about 4,769 (209)
Revisited Mechanistic Implications of the Joullié–Ugi Three-Component Reaction
, 2016 The effect of the solvent on the diastereoselectivity of the Joullié–Ugi three-component reaction (JU-3CR) using an α-substituted five-membered cyclic imine is revisited.
Akira Matsuda (9292) +2 more
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Challenging 50 Years of Established Views on Ugi Reaction: A Theoretical Approach
, 2016 The Ugi reaction is one of the most famous multicomponent couplings, and its efficiency is still explained by the original mechanism suggested by Ugi in the 60s. This article aims to present a thorough theoretical study of this reaction. It describes how
Laurence Grimaud (1921282) +4 more
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Acid-Free, Aminoborane-Mediated Ugi-Type Reaction Leading to General Utilization of Secondary Amines
, 2016 A variety of secondary amines have become utilized in the Ugi reaction by using aminoborane 1 as an iminium ion generator. Aldehydes, secondary amines, and isocyanides are coupled in the presence of 1 at room temperature, giving the corresponding α-amino
Tomoaki Hasui (2134267) +2 more
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Electrochemical TEMPO-Catalyzed Oxidative Ugi-Type Reaction
ACS Organic & Inorganic Au, 2021 Na Pan +4 more
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Synthesis of Ugi-4CR boronate analogues via microwave irradiation
, 2016 The synthetic condition for the synthesis of boronate ester Ugi-4CR analogs under mild conditions was developed. The reported reactions were carried out in methanol and promoted by microwave heating. This synthetic strategy could provide unique access to
Chao-Yu Hsiao; Shi-Qing Huang; Wan-Hsing Lien; Chen-Yun Hsu; Kun-lin Hsieh; Meng-Hsuan Lin; Meng-Ju Wu; Chia-Chieh Fu; Hsien-Chi Chen; Hao-Ping Fang; Chia-Jung Li; Po-Shen Pan
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The Ugi Four-Component Reaction: Application in the synthesis of bis-hydantoins
Three new bis 1,3,5-trisubstituted hydantoins were synthesized by combining an Ugi four-component condensation reaction with a base induced cyclization.
Gülten, Şirin
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, 2016 A library of symmetrical and unsymmetrical bis-(β-aminoamides) has been prepared starting from symmetrical secondary diamines by using a double Ugi four-component reaction.
Fabio La Spisa (2015899) +3 more
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Green Method for the Synthetic Ugi Reaction by Twin Screw Extrusion without a Solvent and Catalyst. [PDF]
ACS Omega, 2020 Ali El-Remaily MAEAA +2 more
europepmc +1 more source
FACILE SYNTHESIS OF AZULENE AMIDE DERIVATIVES WITH HETEROCYCLIC RESIDUES USING UGI REACTION
, 2008 Many synthetic research reports on heterocyclic compounds by Ugi reaction have appeared in recent years. Starting from 3-isocyanoguaiazulene (3-isocyano-7-isopropyl-1,4-dimethylazulene), there were performed our synthetic studies by Ugi reaction on a ...
深澤 甲
core
The present dissertation describes the development and applications of a new post-synthetic modification (PSM) strategy via the Ugi multicomponent reaction in crystalline, porous, organic solids known as Covalent Organic Frameworks (COFs). The novelty of
Volkov, Alexander
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