Carbonyl-Oxygen-Assisted KOMe-Mediated Formal Hydration of 4-Alkynones: Complete Regioselectivity in the One-Pot Synthesis of 1,4-Diketones under Mild Conditions

2018 ◽  
Vol 2018 (13) ◽  
pp. 1581-1588 ◽  
Author(s):  
Xue-Ting Bai ◽  
Qian-Qian Zhang ◽  
Shuai Zhang ◽  
Dan-Yun Chen ◽  
Ji-Ya Fu ◽  
...  
2020 ◽  
Vol 16 ◽  
pp. 482-491
Author(s):  
Faïma Lazreg ◽  
Marie Vasseur ◽  
Alexandra M Z Slawin ◽  
Catherine S J Cazin

A new catalytic strategy for the one-pot synthesis of N-sulfonylamidines is described. The cationic copper(I) complexes were found to be highly active and efficient under mild conditions in air and in the absence of solvent. A copper acetylide is proposed as key intermediate in this transformation.


Synthesis ◽  
2017 ◽  
Vol 49 (23) ◽  
pp. 5143-5148 ◽  
Author(s):  
Ramesh Katla ◽  
Rakhi Chowrasia ◽  
Caren da Silva ◽  
Aline de Oliveira ◽  
Beatriz dos Santos ◽  
...  

[Ce(l-Pro)2]2 (Oxa) was used as a recyclable heterogeneous catalyst under mild conditions for the preparation of 2-aryl-2,3-dihydroquinazolin-4(1H)-one derivatives. The one-pot protocol proceeds in ethanol using anthranilamide with several aldehydes at 50–55 °C. The catalyst can be recycled and reused three cycles without significant loss of catalytic activity.


2016 ◽  
Vol 38 (3) ◽  
pp. 199-212 ◽  
Author(s):  
Fatemeh Alemi-Tameh ◽  
Javad Safaei-Ghomi ◽  
Mohammad Mahmoudi-Hashemi ◽  
Majid Monajjemi

2016 ◽  
Vol 12 ◽  
pp. 253-259 ◽  
Author(s):  
Hong-Bo Zhang ◽  
Yong-Chun Luo ◽  
Xiu-Qin Hu ◽  
Yong-Min Liang ◽  
Peng-Fei Xu

A new and efficient synthetic method to obtain fully-substituted hexahydroisoindolinones was developed by using bifunctional tertiary amine-thioureas as powerful catalysts. As far as we know, there is no efficient synthetic method developed toward fully-substituted hexahydroisoindolinones. The products were obtained in good yield and diastereoselectivity. The one-pot cascade quadruple protocol features readily available starting materials, simple manipulation, mild conditions and good atom economy.


2020 ◽  
Vol 24 (20) ◽  
pp. 2341-2355
Author(s):  
Thaipparambil Aneeja ◽  
Sankaran Radhika ◽  
Mohan Neetha ◽  
Gopinathan Anilkumar

One-pot syntheses are a simple, efficient and easy methodology, which are widely used for the synthesis of organic compounds. Imidazoline is a valuable heterocyclic moiety used as a synthetic intermediate, chiral auxiliary, chiral catalyst and a ligand for asymmetric catalysis. Imidazole is a fundamental unit of biomolecules that can be easily prepared from imidazolines. The one-pot method is an impressive approach to synthesize organic compounds as it minimizes the reaction time, separation procedures, and ecological impact. Many significant one-pot methods such as N-bromosuccinimide mediated reaction, ring-opening of tetrahydrofuran, triflic anhydrate mediated reaction, etc. were reported for imidazoline synthesis. This review describes an overview of the one-pot synthesis of imidazolines and covers literature up to 2020.


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