137439-91-9

Upstream product

• 50-00-0 formaldehyd 
• 137439-88-4 Benzoic acid (1R,2S,6R)-7-[(4-nitro-benzyloxycarbonyl)-(triphenyl-λ⁵-phosphanylidene)-methyl]-8-oxo-7-aza-bicyclo[4.2.0]oct-3-en-2-yl ester 
• 112563-53-8 Benzoic acid (1S,6R)-7-(tert-butyl-dimethyl-silanyl)-8-oxo-7-aza-bicyclo[4.2.0]oct-2-en-4-yl ester 
• 112563-56-1 (1RS,6RS)-7-Diphenyl-tert-butylsilyl-7-azabicyclo<4.2.0>oct-3-en-8-one 
• 20205-48-5 8-oxo-7-azabicyclo<4.2.0>oct-2-ene 
• 98810-97-0 (1RS,6SR)-7-Dimethyl-tert-butylsilyl-7-azabicyclo<4.2.0>oct-3-en-8-one 
• 112563-58-3 (1RS,2SR,6RS)-8-Oxo-7-azabicyclo<4.2.0>oct-3-en-2-yl benzoate 
• 100-11-8 1-bromomethyl-4-nitro-benzene 

Relevant academic research and scientific papers

Olivanic Acid Analogues. Part 9. Allylic Oxidative Functionalisation of Substituted Azetidinones: Synthesis of Some 4-Acyloxy-7-oxo-1-azabicyclohept-2-ene-2-carboxylates

Sharpless oxidation (ButO2H), SeO2) of the protected allyl azetidinone 7 gave the allylic alcohol 8 which was transformed to the 5,6-trans-4α-acetoxyolivanic acid derivative 16.Kharasch-Sosnovsky benzoyloxylation (PhCO3But, CuCl, PhH, heat) of the silylated 7-azabicyclooct-3-enes 17b,c provided inter alia allylic benzoates 18b,c and 21b,c.These were synthetic precursors of the 5,6-cis-olivanic acid analogues 23 and 26, which contain 8- and 4α-benzoyloxy groups, respectively.