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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.
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页码:1144 / 1150
页数:7
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