The three-dimensional configuration of the ester heterocycle is basically the same as that of the carbocycle. Compound: 5-Iodo-2-furaldehyde(SMILESS: IC1=CC=C(O1)C=O,cas:2689-65-8) is researched.HPLC of Formula: 2689-65-8. The article 《Palladium-catalyzed synthesis of 4-heteroaryl and 4-alkynyl-substituted sydnones. 5-Oxido-3-phenyl-1,2,3-oxadiazol-3-ium-4-ylzinc chloride》 in relation to this compound, is published in Mendeleev Communications. Let’s take a look at the latest research on this compound (cas:2689-65-8).
A general method is suggested for the synthesis of 4-heteroaryl- and 4-alkynyl-3-Ph sydnones by palladium(0)-catalyzed cross-coupling of 5-oxido-3-phenyl-1,2,3-oxadiazol-3-ium-4-ylcopper (I, R = Cu) with heteroaryl iodides and alkynyl bromides. Thus, I (R = H) was treated sequentially with BuLi, CuBr, and then 2-iodopyridine and Pd(PPh3)4 in THF-C6H6 to give 85% I (R = 2-pyridyl). 5-Oxido-3-phenyl-1,2,3-oxadiazol-3-ium-4-ylzinc chloride (I, R = ZnCl) was synthesized and found to be significantly less reactive than I (R = Cu) and was successfully coupled only with p-iodonitrobenzene and β-bromostyrene.
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Reference:
1,8-Naphthyridine – Wikipedia,
1,8-Naphthyridine | C8H6N2 – PubChem