Department of Applied Chemistry, Graduate School of Engineering, Tokyo University of Agriculture and Technology, Koganei, Tokyo 184-8588, Japan.
Chem Commun (Camb). 2011 Nov 14;47(42):11639-40. doi: 10.1039/c1cc14765j. Epub 2011 Sep 15.
Titanocene(II)-promoted cross-coupling between (Z)-alkenyl methyl sulfones and terminal allenes produced 1,4-dienes regioselectively via the formation of 2-alkylidenetitanacyclopentanes. Preferential formation of E,Z-dienes was observed in the reaction using aryl-, amino-, and phosphinylallenes.
二茂钛(II)促进(Z)-烯基甲基砜与末端炔的交叉偶联反应，通过形成 2-亚烷基二茂钛环戊烷，区域选择性地生成 1,4-二烯。在使用芳基、氨基和膦基炔的反应中，观察到 E,Z-二烯优先形成。
