Reaction of Trifluoroacetic Anhydride with N-(2-Hydroxybenzyl)-α-amino Acids: An Entry in the New [1,3]Oxazolo[2,3-b][1,3]benzoxazine Ring System
Bernard Chantegrel, Christian Deshayes,* and René Faure
Heterocycles
Vol 36, Issue 12, 1993, pp.2811-2818
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http://dx.doi.org/10.3987/COM-93-6525спасибо!
