Photodimerization and Photocycloaddition Reactions Yielding Cyclobutanes

摘要: The formation of dimers and cycloaddition products upon irradiation compounds containing olefinic bonds constitutes one the first types photochemical reactions observed. Early workers were dependent mainly in sunlight, often for periods several months (varying as to season) obtain small yields products. Laborious separation purification led elucidation gross structure these products, but since excellent physical tools commonly available present-day photochemist lacking, stereochemistry remained completely obscure. A review discovered investigated prior rapid acceleration progress past twenty years is given by Mustafa.(1)