171973-08-3

Upstream product

• 13154-24-0 triisopropylsilyl chloride 
• 2873-29-2 D-glucal triacetate 
• 171972-95-5 methyl 2,3-dideoxy-4-hydroxy-6-O--α-D-erythro-hex-2-enopyranoside 
• 113976-82-2 3-methoxy-4-(phenylethynyl)-3-cyclobutene-1,2-dione 
• 171972-94-4 methyl 2,3-dideoxy-4-O-(2-propynyl)-6-O--α-D-erythro-hex-2-enopyranoside 
• 22860-25-9 methyl 2,3-dideoxy-4,6-dihydroxy-α-D-erythro-hex-2-enopyranoside 

Relevant academic research and scientific papers

Ring Expansion of 4-Alkynylcyclobutenones. Synthesis of Enantiomerically Pure Pyranoquinones from 4-(4-Oxo-1,6-enynyl)-4-hydroxycyclobutenones and 4-(4-Oxo-1,6-dialkynyl)-4-hydroxycyclobutenones

Thermolysis of 4-(4-oxo-1,6-enynyl)-4-hydroxycyclobutenones 23 in refluxing toluene provides an enantiospecific synthesis of pyranoquinones 27.The 4-methoxy analog 32 was shown to give a quinone methide 35 and ultimately the trimer 36.