35688-70-1Relevant articles and documents
1,4-Dioxinopyridines and 1,4-Oxathiinopyridines
Neunhoeffer, Hans,Sponheimer, Otto
, p. 2453 - 2454 (2007/10/02)
Reaction of 3-hydroxy-2-pyridones 1 or 3-hydroxy-2-pyridinthiones 2 with sodium hydride and 1,2-dibromoethane in hexamethylphosphorous triamide gives 1,4-dioxinopyridines 3 and 1,4-oxathiinopyridines 4, respectively.Nitration of 3 affords nitro-1,4-dioxinopyridines 5 which can be hydrogenated to amino-1,4-dioxinopyridines 7.