Electrochemical one-pot synthesis of five-membered azaheterocycles via [4 + 1] cyclization

2020 ◽  
Vol 7 (23) ◽  
pp. 3912-3917
Author(s):  
Qiang Wang ◽  
Xincan Wang ◽  
Qiang Liu ◽  
Guanqun Xie ◽  
Shujiang Ding ◽  
...  
Keyword(s):  
Electrochemical Oxidation ◽  
One Pot ◽  
One Pot Synthesis

Five-membered N-heterocycles, such as oxadiazoles, thiadiazoles, oxazolines and imidazoles, have been prepared via electrochemical oxidation/[4 + 1] cyclization/dehydrogenative aromatization in one pot from readily available materials.

One-Pot Synthesis and Conformational Analysis of 6-Membered Cyclic Iodonium Salts

2020 ◽  
Author(s):  
Lucien Caspers ◽  
Julian Spils ◽  
Mattis Damrath ◽  
Enno Lork ◽  
Boris Nachtsheim
Keyword(s):  
Conformational Analysis ◽  
Bronsted Acids ◽  
One Pot ◽  
Benzyl Alcohols ◽  
Iodonium Salts ◽  
Efficient Approach ◽  
One Pot Synthesis ◽  
Diaryliodonium Salts

In this article we describe an efficient approach for the synthesis of cyclic diaryliodonium salts. The method is based on benzyl alcohols as starting materials and consists of an Friedel-Crafts-arylation/oxidation sequence. Besides a deep optimization, particluar focusing on the choice and ratios of the utilized Bronsted-acids and oxidants, we explore the substrate scope of this transformation. We also discuss an interesting isomerism of cyclic iodonium salts substituted with aliphatic substituents at the bridge head carbon. <br>

Facile and Convenient Ag/Cd/Cu Nanoparticle Catalysed One-pot Synthesis of Xanthenes

2017 ◽  
Vol 7 (12) ◽  
pp. 1192-1195
Author(s):  
Y. I. Shaikh ◽  
G. M. Nazeruddin ◽  
Khursheed Ahmed
Keyword(s):  
One Pot ◽  
One Pot Synthesis ◽  
Cu Nanoparticle
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