57079-57-9

Upstream product

• 55610-35-0 phenylmalonic acid tert-butyl ethyl ester 

Downstream Products

• 57079-55-7 (6R)-7t-((Ξ)-2-tert-butoxycarbonyl-2-phenyl-acetylamino)-3-(2-ethoxycarbonyl-vinyl)-8-oxo-(6rH)-5-thia-1-aza-bicyclo[4.2.0]oct-2-ene-2-carboxylic acid tert-butyl ester 
• 57079-56-8 (6R)-7t-((Ξ)-2-tert-butoxycarbonyl-2-phenyl-acetylamino)-3-(2-tert-butoxycarbonyl-vinyl)-8-oxo-(6rH)-5-thia-1-aza-bicyclo[4.2.0]oct-2-ene-2-carboxylic acid tert-butyl ester 
• 94712-34-2 4-hydroxy-6-(4-methoxyphenyl)-3-phenyl-2H-pyran-2-one 
• 78376-10-0 (Z)-5-benzylidene-4-hydroxy-3-phenylfuran-2(5H)-one 
• 93327-87-8 4-hydroxy-3,6-diphenyl-2H-pyran-2-one 
• 952600-52-1 (Z)-4-hydroxy-5-(4-methoxybenzylidene)-3-phenylfuran-2(5H)-one 

Relevant academic research and scientific papers

Silver-Catalyzed tert-Butyl 3-Oxopent-4-ynoate π-Cyclizations: Controlling the Ring Size - Hydroxypyrone or Pulvinone Formation - By Counterion and Additive Optimization

tert-Butyl 2,5-diaryl-3-oxopent-4-ynoates, obtained from arylacetylenes and the acid chloride of tert-butyl 2-phenylmalonate, represent strongly enolized β-ketoesters. Their C≡C bonds were activated by Ag(I) salts so that de-tert-butylating π-cyclizations