Ramnauth, Jailall published the artcilePhotochemical preparation of cyclopropanes from cyclobutanones, Formula: C12H14O2, the publication is Canadian Journal of Chemistry (2001), 79(2), 114-120, database is CAplus.
A general method for the preparation of cyclopropanes is reported. Triplet-photosensitized reactions of cyclobutanones give cyclopropanes as the major product. Part 1 describes the synthesis of substituted cyclobutanones used. In Part 2, the photo-reactions of cyclobutanones are reported. Triplet-sensitized reactions of cyclobutanones using acetone as a sensitizer give cyclopropanes as the major nonpolar products. The extent of photodecarbonylation seems to be dependent on α-substitution. Electron-donating groups promote decarbonylation while electron-withdrawing groups favor cycloelimination.
Canadian Journal of Chemistry published new progress about 5205-11-8. 5205-11-8 belongs to esters-buliding-blocks, auxiliary class Alkenyl,Benzene,Ester, name is 3-Methylbut-2-en-1-yl benzoate, and the molecular formula is C12H14O2, Formula: C12H14O2.
Referemce:
https://en.wikipedia.org/wiki/Ester,
Ester – an overview | ScienceDirect Topics