One-pot Synthesis of Multi-substituted Conjugated Dienones by Trapping Allene Carbocation with Active Ylides

2022 ◽  
Author(s):  
Dan Ni ◽  
Longlong Song ◽  
Yun Zhao ◽  
Shunying Liu

An Rh (II)/boron reagents co-catalyzed unprecedent transformation was established for a rapid construction of multi-substituted conjugated dienones under a mild condition by trapping allene carbocations with oxonium ylides from simple...

2019 ◽  
Vol 4 (15) ◽  
pp. 4611-4614
Author(s):  
Kemparajegowda ◽  
Hassan A. Swarup ◽  
Nagarakere C. Sandhya ◽  
Shobith Rangappa ◽  
Kempegowda Mantelingu ◽  
...  

2021 ◽  
pp. 131452
Author(s):  
Leizhi Zheng ◽  
Guoqiang Yang ◽  
Jia Liu ◽  
Xingbang Hu ◽  
Zhibing Zhang

2021 ◽  
Author(s):  
Samrat Kundu ◽  
Ankush Banerjee ◽  
Shyam Chand PAL ◽  
Meghna Ghosh ◽  
Modhu Sudan Maji

A Brønsted acid catalyzed cascade benzannulation strategy for the one-pot synthesis of densely populated poly-aryl benzo[a]carbazole architectures is disclosed from easily affordable fundamental commodities. The efficacy of this technique was...


2021 ◽  
Author(s):  
Tien Tan Bui ◽  
Hee-Kwon Kim

A practical one-pot synthesis of ketones from primary alcohols is described. Primary alcohols were successfully transformed via treatment with dibromoisocyanuric acid and various aromatic compounds in the presence of Fe2O3...


2020 ◽  
Author(s):  
Lucien Caspers ◽  
Julian Spils ◽  
Mattis Damrath ◽  
Enno Lork ◽  
Boris Nachtsheim

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>


2017 ◽  
Vol 7 (12) ◽  
pp. 1192-1195
Author(s):  
Y. I. Shaikh ◽  
G. M. Nazeruddin ◽  
Khursheed Ahmed

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