107668-25-7

Upstream product

• 66363-43-7 (2S,5R,6S)-benzyl 6-(1,3-dioxoisoindolin-2-yl)-3,3-dimethyl-7-oxo-4-thia-1-azabicyclo[3.2.0]heptane-2-carboxylate 
• 59034-26-3 (2S,5R,6R)-benzyl 6-(1,3-dioxoisoindolin-2-yl)-3,3-dimethyl-7-oxo-4-thia-1-azabicyclo[3.2.0]heptane-2-carboxylate 
• 51415-34-0 (2S,5R,6S)-6-(1,3-Dioxo-1,3-dihydro-isoindol-2-yl)-3,3-dimethyl-4,7-dioxo-4λ⁴-thia-1-aza-bicyclo[3.2.0]heptane-2-carboxylic acid benzyl ester 

Downstream Products

• 107668-26-8 (R)-2-[(2R,3S)-3-(1,3-Dioxo-1,3-dihydro-isoindol-2-yl)-2-(2-methoxycarbonyl-ethylsulfanyl)-4-oxo-azetidin-1-yl]-3-methyl-butyric acid benzyl ester 
• 107645-27-2 (R)-2-[(2R,3S)-3-(1,3-Dioxo-1,3-dihydro-isoindol-2-yl)-2-fluoro-4-oxo-azetidin-1-yl]-3-methyl-butyric acid benzyl ester 
• 107740-87-4 (R)-2-[(2R,3R)-3-(1,3-Dioxo-1,3-dihydro-isoindol-2-yl)-2-fluoro-4-oxo-azetidin-1-yl]-3-methyl-butyric acid benzyl ester 
• 107645-26-1 (R)-2-[(2R,3S)-3-(1,3-Dioxo-1,3-dihydro-isoindol-2-yl)-2-(2-methoxycarbonyl-ethylsulfanyl)-4-oxo-azetidin-1-yl]-3-methyl-but-3-enoic acid benzyl ester 

Relevant academic research and scientific papers

4-FLUOROAZETIDINONE DERIVATIVES FROM SECOPENICILLANATE SULPHONIUM TETRAFLUOROBORATES

Reaction of certain secopenicillanate esters with trimethyloxonium tetrafluoroborate yielded 4-fluoroazetidinone derivatives presumably via the intermediacy of secopenicillanate sulphonium tetrafluoroborate salts.