109216-98-0

Upstream product

• 109216-92-4 dimethyl diazo(2,6-diphenyl-4-methyl-4H-pyran-4-yl)-methanephosphonate 

Downstream Products

• 109217-04-1 dimethyl 4,6-dioxo-9-methyl-1a,5,8a-triphenyl-2,8-etheno-1a,2,5,6,8,8a-hexahydro-4H-oxireno<1,2,4>triazolo<1,2-a>pyridazine-10-phosphonate 

Relevant academic research and scientific papers

Oxepines from Pyrylium Salts and Diazo Esters. Cycloaddition Behavior toward 4-Phenyl-1,2,4-triazoline-3,5-dione

Electrophilic diazoalkane substitution of the diazo esters 7a and b with 2,4,6-trimethylpyrylium tetrafluoroborate (6a) results in the formation of the 4-(diazomethyl)-4H-pyrans 8a and b as well as the 1H-1,2-diazepines 13a and b.The latter are formed by