On July 30, 1993, Tomioka, Hideo; Taketsuji, Kohji published an article.COA of Formula: C10H10O3 The title of the article was Formation of heptafulvene in reactions of [(methoxycarbonyl)methyl]phenylcarbene in the gas phases. And the article contained the following:
Flash vacuum pyrolysis of [[(methoxycarbonyl)methyl]phenyl]diazomethane (I) produced 1-(methoxycarbonyl)benzocyclobutene (II), as a result of intramol. C-H insertion in the ortho isomer of [[(methoxycarbonyl)methyl]phenyl]carbene (III) generated by carbene-carbene rearrangement, and 8-(methoxycarbonyl)heptafulvene (IV), presumably formed by intramol. H migration in the seven-membered ring intermediates involved in the rearrangement. The experimental process involved the reaction of Methyl 2-(3-formylphenyl)acetate(cas: 142327-44-4).COA of Formula: C10H10O3
The Article related to heptafulvene, methoxycarbonylmethylphenylcarbene rearrangement gas mechanism, Physical Organic Chemistry: Rearrangements, Including Isomerization and Tautomerization and other aspects.COA of Formula: C10H10O3
Referemce:
Ester – Wikipedia,
Ester – an overview | ScienceDirect Topics