N-Acyliminium Ion Chemistry: Highly Efficient and Versatile Carbon-Carbon Bond Formation by Nucleophilic Substitution of Hydroxy Groups Catalyzed by Sn(NTf2)4
作者:Raja Ben Othman、Radouane Affani、Marie-José Tranchant、Sylvain Antoniotti、Vincent Dalla、Elisabet Duñach
DOI:10.1002/anie.200906036
日期:2010.1.18
O‐acetals are used in a catalytic, highly efficient α‐amidoalkylation of a broad range of carbon‐centered nucleophiles, including silicon‐based components, active methylene derivatives, electron‐rich arenes, and even simple ketones (see scheme). The reactions proceed in a highly efficient manner and typically require only 1 mol % of the Lewis superacidic reagent Sn(NTf2)4 as the catalyst.
原子经济:未经修饰的半-N,O-乙缩醛可用于各种以碳为中心的亲核试剂的高效催化α-酰胺基烷基化反应,包括硅基组分,活性亚甲基衍生物,富电子芳烃,甚至简单的酮(见方案)。反应以高效的方式进行,并且通常仅需要1mol%的路易斯超酸性试剂Sn(NTf 2)4作为催化剂。