The starting material 3-nitro-2-acetylnaphtho[2,1-b]furan (2) was obtained by nitration of 2-acetylnaphtho[2,1-b] furan (1), under mild condition. The compound 1 was synthesized by the reaction of 2-hydroxy-1-naphthaldehyde with chloroacetone, where in both condensation and cyclization took place in single step. The reaction of 3-nitro-2-acetylnaphtho[2,1-b]furan (2) with hydrazine hydrate produced corresponding hydrazone (3) in excellent yield, which on treatment with various aromatic aldehydes under different reaction conditions resulted in the formation of symmetrical azines (4a-e) and unsymmetrical azines (5a-e). All the newly synthesized compounds have been characterized by analytical and spectral studies and were screened for antibacterial antibacterial activity againstBacillus subtilusandAlcaligenes fecaliesand antifungal activity againstAspergillus nidulans, Aspergillus parasiticusandAspergillus terrus. The Second Harmonic Generation (SHG) efficiency of some of the synthesized compounds was measured by powder technique using Nd:YAG laser.
起始物质
3-硝基-2-乙酰基
萘并[2,1-b]
呋喃(2)是通过在温和条件下对2-乙酰基
萘并[2,1-b]
呋喃(1)进行硝化得到的。化合物1是通过2-羟基-1-
萘醛与
氯乙酮反应合成的,在这个过程中,缩合和环化在单步中进行。
3-硝基-2-乙酰基
萘并[2,1-b]
呋喃(2)与
水合
肼反应,在极高收率下产生相应的
肼醛(3),经过不同反应条件下与各种芳香醛处理后形成了对称偶氮化合物(
4a-e)和非对称偶氮化合物(
5a-e)。所有新合成的化合物均通过分析和光谱研究进行了表征,并对其抗菌活性进行了筛选,包括对
Bacillus subtilus和
Alcaligenes fecalies的抗菌活性,以及对
Aspergillus nidulans, Aspergillus parasiticus和
Aspergillus terrus的抗真菌活性。通过使用Nd:YAG激光和粉末技术测量了部分合成化合物的二次谐波产生(S
HG)效率。