127916-16-9

Upstream product

• 31301-47-0 (3,5-dimethylisoxazol-4-yl)(phenyl)methanone 
• 1817-57-8 4-phenyl-3-butyne-2-one 
• 127916-08-9 1-(3-methyl-5-phenylisoxazol-4-yl)ethanone 

Downstream Products

• 31301-47-0 (3,5-dimethylisoxazol-4-yl)(phenyl)methanone 
• 127916-12-5 1-(2-methyl-5-phenyloxazol-4-yl)ethan-1-one 

Relevant academic research and scientific papers

Photochemistry of 4-Acylisoxazoles

The photochemistry of 4-acylisoxazoles 4, 5, 13, 14, and 17 was investigated in an effort to clarify literature contradictions and anomalies and to provide a more detailed picture of the nature and number of intermediates involved in photoreactions of these systems.In contrast to a previous report on the photorearrangement of 14, both oxazoles expected from a 2H-azirine intermediate have been observed.Wavelength studies of 5 and the derived 2H-azirine 10 revealed evidence for the involvement of at least two distinct product-forming intermediates.The results of quantum yield and laser photolysis measurements for ketones 4, 14, and 17 have been interpreted in terms of rapid openings of triplet states to form diradical-like intermediates coupled with efficient reclosures (70-99percent).