Cyclization of the Semicarbazones to 1,3,4-Oxadiazole Derivatives Using Ceric Ammonium Nitrate as Oxidant
Corresponding Author(s) : H. Vahedi
hooshangvahedi@yahoo.co.uk; h_vahedi@pnu.ac.ir
Asian Journal of Chemistry,
Vol. 24 No. 1 (2012): Vol 24 Issue 1
Abstract
Cyclization of the semicarbazones to 1,3,4-oxadiazole using ceric ammonium nitrate as oxidant was studied. 2-Imino-1,3,4-oxadiazolines can be produced from semicarbazones, which undergo thermolysis to amides. Benzoic acid benzylidene hydrazide can also be cyclized to 2-methoxy- 2-phenyl-1,3,4-oxadiazole in the presence of ceric ammonium nitrate and methanol.
Keywords
Ceric ammonium nitrate
Semicarbazones
1,3,4-Oxadiazoles
2-Methoxy-2- phenyl-1,3,4-oxadiazole
(1)
Vahedi, H.; Lari, J.; Bav, A.; Ameri, B. Cyclization of the Semicarbazones to 1,3,4-Oxadiazole Derivatives Using Ceric Ammonium Nitrate As Oxidant. ajc 2011, 24, 288-290.
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