Condensation Reactions of 2-Aminobenzohydrazide with Various Carbonyl Compounds

被引:7
作者
El-Shaieb, Kamal M. [1 ]
Ameen, Mohamed A. [1 ]
Abdel-Latif, Fathy F. [1 ]
Mohamed, Asmaa H. [1 ]
机构
[1] Menia Univ, Dept Chem, Fac Sci, El Minia, Egypt
来源
ZEITSCHRIFT FUR NATURFORSCHUNG SECTION B-A JOURNAL OF CHEMICAL SCIENCES | 2012年 / 67卷 / 11期
关键词
Quinazolines; Aminobenzohydrazide; Aldehydes; Ketones; Anhydrides; Hydrazones; TYROSINE KINASE INHIBITORS; GROWTH-FACTOR RECEPTOR; BIOLOGICAL EVALUATION; DERIVATIVES; POTENT; EFFICIENT; SERIES; SPIRO;
D O I
10.5560/ZNB.2012-0202
中图分类号
O61 [无机化学];
学科分类号
070301 ; 081704 ;
摘要
Technical iodine was found to catalyze the condensation between 2-aminobenzohydrazide (1) and some aldehydes and ketones in absolute ethanol under mild conditions to afford hydrazone and quinazoline derivatives, respectively. Condensation of 1 with terephthalaldehyde (2) in 1: 1 molar ratios afforded the hydrazone 3, while hydrazone 4 was formed on using a double molar ratio of 1. On the other hand, compound 1 condensed with 4-formyl [2.2]paracyclophane (5) to give the hydrazone 6. However, spiro-quinazolines 8, 10, 12, and 14 were formed when compound 1 reacted with ketones such as N-benzylpiperidone (7), indane-1,2,3-trione (9), cyclohexane-1,2-dione (11), and dimedone (13), respectively. Treatment of 1 with tetrabromophthalic anhydride (TBPA, 18) and pyromellitic dianhydride (PMDA, 20) furnished phthalazino-quinazoline 19 and 21, respectively. The products were fully characterized according to their spectral analyses. The mechanisms of formation of the products have been rationalized.
引用
收藏
页码:1144 / 1150
页数:7
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