204649-41-2

Upstream product

• 19650-83-0 N-(iso-butyryl)benzoxazoline-2-thione 
• 563-79-1 2,3-Dimethyl-2-butene 

Downstream Products

• 312313-52-3 o-Hydroxy-N-(3,3,4,4-tetramethylthietan-2-ylidene)aniline 
• 204649-38-7 2-[(3,3,4,4-tetramethylthietan-2-ylidene)amino]phenyl acetate 

Relevant academic research and scientific papers

Photochemical reactions of N-acylbenzoxazole-2-thiones

The photochemical reactions of N-acylbenzoxazole-Z-thiones 1 are examined. Irradiation of N-acylbenzoxazole-2-thiones 1 in the presence of a variety of alkenes 2 yields 2-substituted benzoxazoles 3-20 and/or the unexpected products, iminothietanes 21-29 by intramolecular trapping of the acyl group by thiolate anion of the zwitterionic intermediate I and by the phenolate anion of the zwitterionic intermediate II, respectively, derived from the spirocyclic aminothietanes AT which are formed by regioselective [2+2] cycloaddition of the carbon-sulfur double bond of 1 to the alkene double bond. The Royal Society of Chemistry 2000.

Photoaddition of N-acylbenzoxazole-2-thiones to alkenes

N-Acylbenzoxazole-2-thiones 1 undergo photoaddition with alkenes 2 in a regiospecific manner to yield benzoxazole derivatives 3-9 and/or the unexpected, iminothietanes 10-14 via spirocyclic aminothietane intermediates, depending on the nature of the substituents both on the N-atom of 1 and those present in the alkenes 2.