87305-52-0

Upstream product

• 20664-07-7 methyl benzylpenicillinate 1,1-dioxide 
• 62607-61-8 (2R,3S)-1-(1-methoxycarbonyl-2-methylprop-1-enyl)-3-phenylacetamido-4oxoazetidine-2-sulphinic acid 
• 87259-80-1 C₁₉H₂₂N₂O₅S₂ 
• 21794-95-6 6α-(2-phenyl-acetylamino)-penicillanic acid methyl ester 

Downstream Products

• 87305-51-9 2-((2R,3S)-2-Acetylsulfanyl-4-oxo-3-phenylacetylamino-azetidin-1-yl)-3-methyl-but-2-enoic acid methyl ester 
• 71840-43-2 methyl 2-(2,4-dioxo-3-phenylacatamidoazetidin-1-yl)-3-methylbut-2-enoate 
• 121054-12-4 methyl 3-methyl-2-<(3R,4R)-2-oxo-3-phenylacetamido-4-pyruvoyloxyazetidin-1-yl>but-2-enoate 

Relevant academic research and scientific papers

STUDIES RELATED TO PENICILLINS. PART 26. CONVERSION OF POTASSIUM BENZYLPENICLLINATE INTO 1-SUBSTITUTED DERIVATIVES OF 3-PHENYL-ACETAMIDOAZETIDINE-2,4-DIONE

A new method for the synthesis of azetidine-2,4-diones, involving a Norrish Type II photoreaction of 4-pyruvoylazetidin-2-ones, has been devised.The process features in strategies in which potassium benzylpenicillinate (17a) is converted into 1-substitute

A NEW REDUCTIVE ACETYLATION OF SULPHINIC ACIDS AND ITS APPLICATION TO THE SYNTHESIS OF 2-ACETYLTHIO-4-OXOAZETIDINONES

The sulphinic acid function of (4-oxoazetidin-2-yl)sulphinic acids is transformed into the acetylthio moiety by sequential reactions involving thionyl chloride, thioacetic acid and triphenylphosphine.