█ _ Michael J Mealy, William F Bailey 2001 حصريا كتاب ❞ Synthesis of Heterocycles by Cycliszation unsaturated ❝ 2025 unsaturated: The preparation heterocycles from acyclic precur sors constitutes one the most studied areas or ganic chemistry, and over past two decades, significant advances have been made in exploitation of main group organometallics for this purpose This brief review serves to highlight major achievements in development anionic cyclization olefinic organolithiums as a synthetic tool preparation of nitrogen oxygen containing rings مجاناً PDF اونلاين