Organolithium Displacement of Aryl Anions from Tertiary Phosphine Derivatives of Diphenyl Ether
作者:Jack B. Levy、Richard C. Walton、Ron E. Olsen、Courtland Symmes
DOI:10.1080/10426509608545211
日期:1996.1
phenyllithium produced 10-phenyl-10H-phenoxaphosphine (by lithiation ortho to oxygen followed by cyclization) along with triphenylphosphine (by direct displacement of 2-lithiodiphenyl ether). Other compounds prepared in this work: 2,2′-bis(diphenylphosphino)-diphenyl ether, bis(2-phenoxyphenyl)phenylphosphine, tris(2-phenoxyphenyl)phosphine, 4-carboxy-10-phenyl-10H-phenoxaphosphine, and the oxides and sulfides
摘要 甲基锂取代 10-苯基-10H-吩恶膦中的苯基阴离子,生成 10-甲基-10H-吩恶膦和起始膦的 70:30 混合物。丁基锂使 50% 转化为 10-丁基-10H-苯氧膦。这些反应可以通过一步亲核置换或通过环裂解然后再循环来发生。为了证明两步法的可行性,生成了非杂环锂化叔膦,并显示出环化成苯氧膦。例如,2-苯氧基苯基二苯基膦与苯基锂的反应产生了 10-苯基-10H-吩恶膦(通过与氧邻位锂化,然后环化)以及三苯基膦(通过直接置换 2-硫代二苯醚)。在这项工作中制备的其他化合物:2,2'-双(二苯基膦)-二苯醚,