This review deals with an important class of multifunctional reagents, namely, 2-halogen-N-
phenacyl pyridinium salts 1 capable of forming betaine-ylides 2 (phenacylides) and thus …

The methods for the synthesis of oxazolo [3, 2-a] pyridinium and oxazolo [3, 2-a]
pyrimidinium salts and their reactivities are reviewed. Both systems exhibit ambident …

Nowadays, a search for and design of new pharmaceuticals are carried out largely in a
purpose-oriented manner: chemical compounds are being tested only for some required …

2-Halogeno-N-phenacylpyridinium salts 1 (Hal= Cl, Ar= p-NO2Ph; Hal= Br, Ar= Ph) in
reaction with aliphatic secondary amines undergo an unusual ring transformation to 1-amino …

A series of previously unavailable derivatives of 2-alkyl-and 2-benzylderivatives of oxazolo
[3, 2-a] pyridines III were obtained via tandem ring opening and ring closure from stable …

A new, efficient, sensitive, and reliable color test for the visual detection of resin-bound
primary and secondary amines is described. The reaction between amines and 1-methyl-2 …

Abstract Stepwise conversion of pyrimidin-2 (1H)-one to 2-amino-5-aryloxazoles via oxazolo
[3, 2-a] pyrimidinium salts is reported. The sequence involves,(i) regioselective N-alkylation …

Formation of oxazoles from 2-methylsulfanyl-N-phenacylpyridinium salts. // ARKIVOC, 2001, Vol.2,
p.139-145. Page 1 Issue in Honor of Professor Fritz Sauter ARKIVOC 2001 (ii) 139-145 Formation …

A procedure was developed for the synthesis of representatives of the previously unknown
bicyclic mesoionic thiazolo [3, 2-a] pyridinium 2-thiolate system by the reaction of 2-XN …

A previously unknown recyclization of an 11-acyldipyrido [1, 2-a: 1′, 2′-c] imidazolium
cation to 8-formyl-9-methyl (aryl) pyrido [1, 2-a] benzimidazoles has been discovered. The …