Efficient synthesis of 2-arylquinazolin-4-amines via a copper-catalyzed diazidation and ring expansion cascade of 2-arylindoles

2018 ◽  
Vol 54 (89) ◽  
pp. 12602-12605 ◽  
Author(s):  
Meng-Meng Xu ◽  
Wen-Bin Cao ◽  
Xiao-Ping Xu ◽  
Shun-Jun Ji
Keyword(s):  
Ring Expansion ◽  
Efficient Synthesis

Copper-catalyzed synthesis of 2-arylquinazolin-4-amines from readily available 2-arylindoles and TMSN3 has been developed.

Efficient synthesis of 2,3-trans-tetrahydropyrans and oxepanes: Rearrangement-ring expansion of cyclic ethers having a chloromethanesulfonate

1999 ◽  
Vol 40 (11) ◽  
pp. 2145-2148 ◽  
Author(s):  
Nobuyuki Hori ◽  
Kazuo Nagasawa ◽  
Takeshi Shimizu ◽  
Tadashi Nakata
Keyword(s):  
Ring Expansion ◽  
Cyclic Ethers ◽  
Efficient Synthesis

Silver-initiated radical ring expansion/fluorination of ethynyl cyclobutanols: efficient synthesis of monofluoroethenyl cyclopentanones

2016 ◽  
Vol 18 (23) ◽  
pp. 6236-6240 ◽  
Author(s):  
Qingshan Tian ◽  
Bin Chen ◽  
Guozhu Zhang
Keyword(s):  
Stereoselective Synthesis ◽  
Ring Expansion ◽  
Efficient Synthesis ◽  
Radical Ring

A stereoselective synthesis of β-halogenated 2-methylenecyclopentanones via silver-catalyzed formal ring expansion using water as the cosolvent is described.

Palladium-Catalyzed Ring-Expansion Reaction of Cyclobutanols with 2-Haloanilines Leading to Benzazepines and Quinolines

2021 ◽  
Author(s):  
Xiao-Qin Shen ◽  
Xiaowei Yan ◽  
Xing-Guo Zhang
Keyword(s):  
Ring Expansion ◽  
Efficient Synthesis ◽  
Oxidative Rearrangement ◽  
Rearrangement Reaction ◽  
Palladium Catalyzed ◽  
Ring Expansion Reaction ◽  
General Synthesis

A general synthesis of 2-aryl benzazepines has been developed through palladium-catalyzed ring-expansion reaction of cyclobutanols with 2-haloanilines, the further oxidative rearrangement reaction of benzazepines provided an efficient synthesis of 2-acyl...

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