الفهرس 
Introduction
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Abstract
This work includes : -1 5 - and 6 - hydroxybenzofurans : from phenols ; from aromatic aldehydes and ketons ; from coumarins ; from quinone derivatives 2- reactions of 5 - and 6 - hydroxybenzofurans : reduaction ; oxidation ; a cetylation ; formylation ; chloromethylation ; mannich reaction ; diazotization ; halogenation ; reaction with halogen compounds ; nitration.