作者:Shigeru Arai、Takashi Sato、Atsushi Nishida
DOI:10.1002/adsc.200900334
日期:2009.8
various alkynes in the presence of trimethylsilyl cyanide (TMSCN) by palladium(II) catalysis under aerobic conditions is investigated. This reaction includes two cyanation pathways, syn- and anti-cyanopalladation to alkynes that are activated by Pd(II). High syn-selectivity was observed in the reaction using terminal alkynes that have bulky substituents at a propargyl position and aliphatic internal
在有氧条件下,通过钯(II)催化研究了在三甲基甲硅烷基氰化物(TMSCN)存在下,各种炔烃的立体选择性1,2-二氰化反应。该反应包括两个氰化途径,即通过Pd(II)活化的炔烃的顺式和反式氰化钯。高顺式使用具有在一个炔丙基位置和脂族内炔庞大的取代基末端炔烃的反应中观察到-选择性。此外,在炔丙基位置具有N-芳烃磺酰基官能度的底物上观察到显着的加速,这表明亚砜和碳-碳三键均充当Pd(II)的路易斯碱。