دراسة لبعض متغيرات الشخصية لدى عينة من ضعاف السمع ومرضى الطنين والدوار مقارنة بالعاديين
عيد جلال على أبو حمزة;
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| Title | دراسة لبعض متغيرات الشخصية لدى عينة من ضعاف السمع ومرضى الطنين والدوار مقارنة بالعاديين | Other Titles | The main objective of the studies described in this thesis involved the synthesis of some new classes of heterocyclic quinones, using tetrabromo-Q_-benzoquinone as starting material. These included (the synthesis of seven new types of heterocyclic compounds namely, imidazolo[4,5-f])benzimidazolediones, naphtl1oxazole diones, naphtho thiazolediones, benz(b)phenazinediones, carbazoles, pyrrocolines and indoles. The reaction of tetrabromo-Q-benzoquinone with ammoma solution m a absolute ethanol gave 2,5-diamino-3,6-dibromo-1,4- benzoquinone (1). The latter was reacted with different acid chlorides to give 2,5-diacylamino -3,6-dibromo-1,4-benzoquinone (2). 0 Br Nl NYBr 0 0 BrnNHCOR RCOHN Br () (l) (2) Compounds (2) were then reacted with ammonia solution to give the 2,5-diacylamino-3,6-diamino-1,4-benzoquinone (3). The cyclization of (3) to imidazolo[4,5-f]benzoimidazolediones (4a-t) was carried out by heating in ethylorthoformate in presence of concentrated sulphuric acid. | Authors | عيد جلال على أبو حمزة | Issue Date | 2003 |
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