116344-10-6
ethyl 2-((dimethylamino)methylene)-4,4-dimethyl-3-oxopentanoate
→
~87%
134540-97-9
5-tert-butyl-3-ethyl-1,2-oxazole-4-carboxylate
134541-06-3
5-叔丁基-异恶唑-4-羧酸