201804-47-9

Upstream product

• 504-29-0 2-aminopyridine 
• 13636-88-9 3,3-bis(methylthio)-1-phenylprop-2-en-1-one 
• 1266621-01-5 2-methylthio-4-phenylpyrido[1,2-a]pyrimidin-5-ium perchlorate 

Downstream Products

• 1266621-01-5 2-methylthio-4-phenylpyrido[1,2-a]pyrimidin-5-ium perchlorate 
• 210035-02-2 (1H-imidazo[1,2-a]pyridin-3-yl)(phenyl)methanone 
• 53687-87-9 3-benzoyl-2-methylthioimidazo<1,2-a>pyridine 

Relevant academic research and scientific papers

Intramolecular cyclocondensation of α-oxoketene N,N-, N,S-and N,O-acetals: Synthesis of novel pyrido[1,2-a]pyrimidinium tetrafluoroborates

A facile regioselective synthesis of substituted pyrido[1,2-a]pyrimidinium salts 5a-f from α-oxo-ketene N,S-acetals 2a-f, 6a-d from N,N-acetals 3a-d, 7b-c from N,O-acetals 4b-c, and 8a-c from N,S-acetals 2a-c is described. The scope and mechanisms of thes

Reaction of lithioamino anions with α-oxoketene dithioketals: An improved and a new general method for the synthesis of α-oxoketene S,N- and N,N-ketals

A new method has been developed for the preparation of α-oxoketene S,N- (A) and N,N-(B) ketals starting from α-oxoketene dithioketals by employing mild conditions. Thus, lithioamino anions 2a-c, 4 and 6 are treated with α-oxoketene dithioketals 1 to affor