The Cyclisation of Salicylamides and Salicylohydroxamic Acids with 1,1'-Carbonyldiimidazole
Cyclisation of salicylamides 1a, b and salicylohydroxamic acids 1c, d with 1,1'-carbonyldiimidazole (2) causes formation of 2H-1,3-benzoxazine-2,4(3H)-diones 4a-d.In contrast to statements in the literature isoimides 3 or isoxazoles 5 could not be isolate
Geffken, Detlef
p. 1513 - 1514
(2007/10/02)
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