Diastereoselective Synthesis of 2-Aryl-3-vinyl-2,3-dihydrobenzo[b]furans through a Sakurai Reaction: A Mechanistic Proposal
作者:Leticia Jiménez-González、Sergio García-Muñoz、Miriam Álvarez-Corral、Manuel Muñoz-Dorado、Ignacio Rodríguez-García
DOI:10.1002/chem.200601017
日期:2007.1.2
3-dihydrobenzofurans shows a level of diastereoselection which is a function of the electronic nature of the aldehyde and the polarity of the solvent. The study of the mechanism of the reaction demonstrated that it proceeds through a ring-opened allylfluorosilane, which is stable enough to be isolated and characterized.
在三氟化硼的存在下,2,3-二氢苯并恶草灵与芳族醛的缩合反应形成2,3-二氢苯并呋喃,这显示出非对映体的选择性,这是醛的电子性质和溶剂极性的函数。对反应机理的研究表明,它是通过开环的烯丙基氟硅烷进行的,该开环的烯丙基氟硅烷足够稳定,可以分离和表征。