New Preparation of Benzylic Aluminum and Zinc Organometallics by Direct Insertion of Aluminum Powder
作者:Tobias D. Blümke、Klaus Groll、Konstantin Karaghiosoff、Paul Knochel
DOI:10.1021/ol202733v
日期:2011.12.16
benzylic aluminum sesquichlorides under mild conditions (THF, 20 °C, 3–24 h) without homocoupling (<5%). These new benzylic organometallics reacted smoothly with various electrophiles (Pd-catalyzed cross-couplings, or Cu-mediated acylations, allylations, or 1,4-addition reactions). Electron-poor benzylic chlorides or substrates prone to Wurtz coupling can be converted to benzylic zinc compounds by the
商业铝粉(3当量)和InCl 3(1-5 mol%)与苄基氯的反应可在温和条件下(THF,20°C,3-24 h)提供各种官能化的苄基铝倍半氯化物,而无需均偶联(<5 %)。这些新的苄基有机金属与各种亲电试剂(Pd催化的交叉偶联,或Cu介导的酰化,烯丙基化或1,4-加成反应)能顺利反应。贫电子的苄基氯化物或易于发生Wurtz偶联的底物可通过在ZnCl 2存在下的Al-粉体反应转化为苄基锌化合物。