…Metal hydrides, such as lithium aluminum hydride, became important reagents in organic synthesis as more powerful reducing agents. Herbert Charles Brown (1912- ) systematized the hydroboration reaction, which adds borane to unsaturated bonds to convert functional groups, while Georg Wittig (1897-1987) developed the carbon chain extension method (Wittig reaction) using phosphorus reagents. In the Wittig reaction, the reaction intermediate ylide plays an important role, and in the 20th century, organic chemistry made remarkable progress in the study of reaction intermediates and unstable molecular species, including ylides. … *Some of the terminology references "Brown, HC" are listed below. Source | Heibonsha World Encyclopedia 2nd Edition | Information |
…水素化リチウムアルミニウムに代表される金属水素化物は,より強力な還元剤として有機合成の重要な試薬となった。ブラウンHerbert Charles Brown(1912‐ )はボランを不飽和結合に付加させて官能基変換を行うヒドロホウ素化反応を体系化する一方,ウィティヒGeorg Wittig(1897‐1987)はリン試薬による炭素鎖延長法(ウィティヒ反応)を開発した。ウィティヒ反応では反応中間体イリドが重要な役割を果たすが,20世紀に入って有機化学はとくにイリドを含めた反応中間体ないし不安定分子種の研究に著しい進歩をみた。… ※「Brown,H.C.」について言及している用語解説の一部を掲載しています。 出典|株式会社平凡社世界大百科事典 第2版について | 情報 |
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