caa a22 4500 445878622 CHVBK 20180317145535.0 cr unu---uuuuu 170323e20110801xx s 000 0 eng 10.1007/s11030-011-9310-9 doi (NATIONALLICENCE)springer-10.1007/s11030-011-9310-9 Synthesis of sterically congested 1,3,4-oxadiazole derivatives from aromatic carboxylic acids, N , N -dicyclohexylcarbodiimide and ( N -isocyanimino)triphenylphosphorane [Elektronische Daten] [Fatemeh Nasrabadi, Ali Ramazani, Yavar Ahmadi] Reactions of (N-isocyanimino)triphenylphosphorane with N,N-dicyclohexylcarbodiimide in the presence of aromatic (or heteroaromatic) carboxylic acids proceed smoothly at room temperature and in neutral conditions to afford sterically congested 1,3,4-oxadiazole derivatives in high yields. The reaction proceeds smoothly and cleanly under mild conditions, and no side reactions were observed. Springer Science+Business Media B.V., 2011 ( N -isocyanimino)triphenylphosphorane nationallicence N , N -dicyclohexylcarbodiimide nationallicence Aromatic carboxylic acid nationallicence Heteroaromatic carboxylic acid nationallicence 1,3,4-oxadiazole nationallicence Aza-Wittig reaction nationallicence Nasrabadi Fatemeh Chemistry Department, Zanjan University, PO Box 45195-313, Zanjan, Iran aut Ramazani Ali Chemistry Department, Zanjan University, PO Box 45195-313, Zanjan, Iran aut Ahmadi Yavar Young Researchers Club, Islamic Azad University, Zanjan Branch, Zanjan, Iran aut Molecular Diversity Springer Netherlands 15/3(2011-08-01), 791-798 1381-1991 15:3<791 2011 15 11030 https://doi.org/10.1007/s11030-011-9310-9 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/s11030-011-9310-9 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Nasrabadi Fatemeh Chemistry Department, Zanjan University, PO Box 45195-313, Zanjan, Iran aut NATIONALLICENCE 700 1- Ramazani Ali Chemistry Department, Zanjan University, PO Box 45195-313, Zanjan, Iran aut NATIONALLICENCE 700 1- Ahmadi Yavar Young Researchers Club, Islamic Azad University, Zanjan Branch, Zanjan, Iran aut NATIONALLICENCE 773 0- Molecular Diversity Springer Netherlands 15/3(2011-08-01), 791-798 1381-1991 15:3<791 2011 15 11030 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer