Synthesis of trisubstituted 1,3-oxazin-6-ones via base-catalyzed ring-opening annulation of cyclopropenones with N-(pivaloyloxy)amides
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DOI: 10.1016/j.tetlet.2018.02.084
Abstract: Abstract The base-catalyzed [3+3]-type annulation between cyclopropenones and N-(pivaloyloxy)amides is reported. The formal insertion of a 1,3-N,O-dipole into a cyclopropenone C C bond yields a six-membered azalactone structure. In the presence of catalytic K2CO3 at… read more here.
Keywords: oxazin ones; trisubstituted oxazin; pivaloyloxy amides; cyclopropenones pivaloyloxy ... See more keywords