An Efficient Approach to the Synthesis of Highly Congested 9,10-Dihydrophenanthrene-2,4-dicarbonitriles and Their Biological Evaluation as Antimicrobial Agents
作者:Hassan Faidallah、Khalid Al-Shaikh、Tariq Sobahi、Khalid Khan、Abdullah Asiri
DOI:10.3390/molecules181215704
日期:——
An efficient and novel method for the synthesis in moderate to good yield (72%–84%) of a series of 3-amino-1-substituted-9,10-dihydrophenanthrene-2,4-dicarbonitriles 1–5 via one-pot multi-component reactions of aldehydes, malononitrile, 1-tetralone and ammonium acetate has been delineated. Cyclocondensation attempts of aminocyanophenanthrene derivatives 1, 2, 4 and 5 with acetic anhydride in the presence of conc. H2SO4 failed and instead the diacetylamino derivatives 10–13 were obtained. All prepared compounds were structurally elucidated by various spectroscopic methods and X-ray crystallography. N,N-diacetylamino-derivatives of phenanthrene have shown good antimicrobial activity.
一种高效且新颖的方法被描述,用于通过一锅多组分反应合成一系列3-氨基-1-取代-9,10-二氢菲-2,4-二腈(1-5),产率中等到良好(72%-84%),反应物包括醛、苹果酸腈、1-四氢萘酮和醋酸铵。对氨基氰基菲衍生物1、2、4和5与醋酸酐在浓硫酸存在下进行环缩合的尝试未能成功,而是获得了二乙酰氨基衍生物10-13。所有合成的化合物通过各种光谱方法和X射线晶体学进行结构阐明。N,N-二乙酰氨基-菲衍生物显示出良好的抗 microbial 活性。