The mechanism of the acid-catalysed conversion of anils into benzimidazoles and quinoxalines: a new ring-expansion of nitrogen heterocycles

1968 ◽  
pp. 500 ◽  
Author(s):  
R. K. Grantham ◽  
O. Meth-Cohn
Keyword(s):  
Nitrogen Heterocycles ◽  
Ring Expansion

ChemInform Abstract: Medium-Ring Nitrogen Heterocycles Through Migratory Ring Expansion of Metalated Ureas.

ChemInform ◽  
2016 ◽  
Vol 47 (51) ◽  
Author(s):  
Jessica E. Hall ◽  
Johnathan V. Matlock ◽  
John W. Ward ◽  
Katharine V. Gray ◽  
Jonathan Clayden
Keyword(s):  
Nitrogen Heterocycles ◽  
Ring Expansion ◽  
Ring Nitrogen ◽  
Medium Ring

ChemInform Abstract: Ring Expansion of 3-Oxetanone-Derived Spirocycles: Facile Synthesis of Saturated Nitrogen Heterocycles.

ChemInform ◽  
2014 ◽  
Vol 45 (14) ◽  
pp. no-no
Author(s):  
Stefan A. Ruider ◽  
Steffen Mueller ◽  
Erick M. Carreira
Keyword(s):  
Nitrogen Heterocycles ◽  
Ring Expansion ◽  
Facile Synthesis

Ring Expansion of 3-Oxetanone-Derived Spirocycles: Facile Synthesis of Saturated Nitrogen Heterocycles

2013 ◽  
Vol 52 (45) ◽  
pp. 11908-11911 ◽  
Author(s):  
Stefan A. Ruider ◽  
Steffen Müller ◽  
Erick M. Carreira
Keyword(s):  
Nitrogen Heterocycles ◽  
Ring Expansion ◽  
Facile Synthesis

scholarly journals A Photochemical Ring Expansion of 6- to 8-Membered Nitrogen Heterocycles by [1,3]-Sigmatropic Rearrangement.

2021 ◽  
Author(s):  
David Harrowven ◽  
Wei Sun ◽  
Mark E. Light ◽  
Morgan Manning
Keyword(s):  
Nitrogen Heterocycles ◽  
Ring Expansion ◽  
Sigmatropic Rearrangement

A new route to azocines and benzoazocines from furopyridinones is described through a photochemically induced [1,3]-sigmatropic rearrangement. The method gives access to these 8-membered nitrogen heterocycles from dimethyl squarate in...

scholarly journals Medium-Ring Nitrogen Heterocycles through Migratory Ring Expansion of Metalated Ureas

2016 ◽  
Vol 55 (37) ◽  
pp. 11153-11157 ◽  
Author(s):  
Jessica E. Hall ◽  
Johnathan V. Matlock ◽  
John W. Ward ◽  
Katharine V. Gray ◽  
Jonathan Clayden
Keyword(s):  
Nitrogen Heterocycles ◽  
Ring Expansion ◽  
Ring Nitrogen ◽  
Medium Ring
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