Presented to: Dr. Ila Jain | Presented by: Khushi Gupta
Cyclohexadienons are six-membered ring compounds with alternating double bonds and a ketone functional group.
These compounds feature a cyclohexene ring with two double bonds and one carbonyl group at specific positions.
Cyclohexadienons exhibit unique photochemical behavior making them valuable in organic synthesis.
The study of cyclohexadienons has evolved significantly since their initial discovery and characterization.
Understanding their photochemistry opens doors to new synthetic methodologies and applications.
Cyclohexadienons absorb specific wavelengths of light, promoting electrons to higher energy states.
Upon photon absorption, these compounds form excited singlet and triplet states with different reactivities.
Photoexcited cyclohexadienons can transfer energy to other molecules or undergo internal conversion.
The ĻāĻ* and nāĻ* transitions are primary pathways in photochemical reactions of these compounds.
The efficiency of photochemical processes is measured by quantum yield, indicating reaction success rates.
Cyclohexadienons undergo electrocyclic ring-opening and closing reactions under photochemical conditions.
Alpha-cleavage of the carbonyl group leads to radical formation and subsequent reaction pathways.
Photoexcited cyclohexadienons can abstract hydrogen atoms from suitable donors or solvents.
Molecular oxygen can quench excited states, leading to singlet oxygen formation and oxidation reactions.
Various rearrangement processes occur, including sigmatropic shifts and pericyclic transformations.
Cyclohexadienone photochemistry enables efficient construction of complex natural product frameworks.
These photochemical methods provide access to valuable building blocks for drug development.
Photoactive cyclohexadienones contribute to the development of advanced materials and polymers.
Photochemical catalysis using cyclohexadienones offers sustainable synthetic approaches.
Large-scale applications benefit from the efficiency and selectivity of photochemical transformations.
New techniques continue to expand the synthetic utility of cyclohexadienone photochemistry.
Photochemical approaches align with sustainable chemistry principles and environmental concerns.
Theoretical calculations provide deeper understanding of photochemical mechanisms and pathways.
Research focuses on creating more efficient and selective photochemical catalysts.
Collaboration between chemistry, biology, and materials science drives innovation in this field.