Sulfinate‐Organocatalyzed (3+2) Annulation of Allenyl Sulfones with 1,1‐Dicyano Olefins in the Presence of a Quaternary Ammonium Phase Transfer Agent
作者:Thomas Martzel、Jean‐François Lohier、Annie‐Claude Gaumont、Jean‐François Brière、Stéphane Perrio
DOI:10.1002/adsc.201800466
日期:2018.7.16
benzenesulfinate‐catalyzed (3+2) annulation between allenyl sulfones and aryl(alkyl)idenemalononitriles has been developed under mild phase transfer conditions, affording a breadth of functionalized sulfonyl cyclopentenes in good to excellent yields (22 examples, 49–99%) and high diastereoselectivities. These adducts were likely generated, via an allylsulfone anion featuring a quaternary ammonium cation.
在温和的相转移条件下,开发了烯基砜和芳基(烷基)亚甲基丙二腈之间的苯磺酸盐催化的(3 + 2)环化反应,提供了多种官能化的磺酰基环戊烯,收率良好至优异(22例,49-99%),并且高非对映选择性。这些加合物可能是通过具有季铵阳离子的烯丙基砜阴离子生成的。