Zhang, Juntian published the artcileAtypical Mode of [3 + 2]-Cycloaddition: Pseudo-1,3-dipole Behavior in Reactions of Electron-Deficient Thioamides with Benzynes, Quality Control of 360-92-9, the publication is Organic Letters (2018), 20(18), 5550-5553, database is CAplus and MEDLINE.
Thioamides bearing electron-withdrawing groups on the thiocarbonyl carbon atom react with benzynes [generated by the hexadehydro-Diels-Alder cycloisomerization] in an unprecedented fashion. Namely, the dihydrobenzothiazole products are consistent with a pathway involving initial formation of a stabilized ammonium ylide by a rare type of [3 + 2]-cycloaddition reaction. The fate of this species depends upon the nature of the substituents attached to the ylide nitrogen atom. The demonstration of new modes of reactivity represents the major advance arising from this study.
Organic Letters published new progress about 360-92-9. 360-92-9 belongs to amides-buliding-blocks, auxiliary class Trifluoromethyl,Fluoride,Amine,Aliphatic hydrocarbon chain,Amide, name is N,N-Diethyl-2,2,2-trifluoroacetamide, and the molecular formula is C8H7NO4, Quality Control of 360-92-9.
Referemce:
https://en.wikipedia.org/wiki/Amide,
Amide – an overview | ScienceDirect Topics