CONVENIENT PREPARATION OF METALS DEPOSITED ON SOLID SUPPORTS AND THEIR USE IN ORGANIC-SYNTHESIS

''High-surface alkali metals'' can be conveniently prepared via deposi tion of corresponding metals on various supports such as sodium chlori de, polyethylene, polypropylene and cross-linked polystyrene from thei r solutions in liquid ammonia. Alkali metals deposited on polymeric su pports can be stored in form of stable suspensions in inert solvents a nd used for the acyloin and Dieckmann condensations and for preparatio n of organolithiums. Addition of the suspension of supported alkali me tal to a solution of zinc chloride gave an active zinc on polymeric su pport which can be used for the Reformatski and Barbier reactions. (C) 1998 Elsevier Science Ltd. All rights reserved.