The fluorine atom and fluorinated substituents are currently key motifs in pharmaceutical agrochemical active ingredients, since they often beneficially modulate the physico-chemical biological properties of latter when installed place a hydrogen substituent. Among such moieties, –OCHF2 is emerging as an interesting group, which notably capable forming bond. These appealing have led to growing ...

Irradiation of &methyl spiro [2.5] oct-7-en-4-one through its singlet excited state resulted in the formation of 4-methyl spirO [2.5] oct-4-en -6-one. We have used the cyclopropyl moiety in the molecule as a probe to study the operating mechanism in the photochemistry of ?, ?-unsaturated compounds. The results showed that this photoisomerization probably occurs through a concerted process.