scholarly journals Studies on Acetylenic Compounds. XXVI. Ring Closure.(6). New Synthetic Method of Heterocyclic Compounds from α-Substituted Acetylenic Compounds

1962 ◽  
Vol 10 (11) ◽  
pp. 1094-1098 ◽  
Author(s):  
Yasuo Yura
Keyword(s):  
Heterocyclic Compounds ◽  
Ring Closure ◽  
Synthetic Method ◽  
Acetylenic Compounds

Aminofluorsilane : Bildung von Heterocyclen und Lithio-aminofluorsilanen / Aminofluorosilanes : Formation of Heterocyclic Compounds and Lithio-aminofluorosilanes

1977 ◽  
Vol 32 (5) ◽  
pp. 537-542 ◽  
Author(s):  
Uwe Klingebiel ◽  
Anton Meller
Keyword(s):  
Heterocyclic Compounds ◽  
Ring Closure ◽  
Organolithium Compounds ◽  
Lithium Amides

Fluorosilanes react with lithium amides and organolithium compounds to give aminofluorosilanes and organofluorosilanes. The reactivity of the monoaminofluorosilanes with butyllithium is decreasing with increasing size of the substituents and with their stabilisation in the molecule. Reactions observed include: a) (2 + 2) cycloaddition, b) ring closure under either C–H-cleavage or under migration of a methanideion and c) formation of stable lithio-aminofluorosilanes.

scholarly journals Studies on Heterocyclic Compounds. III : Ring closure Reaction of 4, 5-Diamino-6-substituted-aminopyrimidines

1966 ◽  
Vol 86 (8) ◽  
pp. 649-653 ◽  
Author(s):  
Teisuke Okano ◽  
Shujiro Goya ◽  
Akira Takadate ◽  
Yoshiaki Ito
Keyword(s):  
Heterocyclic Compounds ◽  
Ring Closure
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