96643-69-5Relevant academic research and scientific papers
Photoaddition of 2-Quinolone and 2-Pyridone Derivatives to Diketene: On the Regioselectivity of the Photoaddition
Chiba, Takuo,Kato, Tetsuzo,Yoshida, Atomi,Moroi, Reimei,Shimomura, Naoyuki,et al.
, p. 4707 - 4720 (2007/10/02)
Photoaddition of 2-pyridones and 2-quinolones to diketene or allene gave the head-to-tail adducts, irrespective of the kind of 4-substituent.Therefore, the adducts obtained by the photoaddition of 2-quinolone, 4-methyl-2-quinolone, and their 1-methyl derivatives to diketene (previously assigned as having the head-to-head structure) have now been determined to have the head-to-tail structure.The stereochemistry of the adducts derived from these 2-quinolones and diketene was determined by X-ray crystallographic analysis and nuclear magnetic resonance spectroscopy.Keywords - diketene; allene; photoaddition; cycloaddition;X-ray analysis; regioselectivity; spirooxetanone; 1-methylene-1,2-dihydrocyclobutaquinoline; stereochemistry.
