catalysis, ferrocene could be an excellent scaffold for organocatalysts. The simple and easily accessible bifunctional ferrocene-based squaramide-phosphine shows high enantioselectivity in the intramolecular Morita–Baylis–Hillman reaction of 7-aryl-7-oxo-5-heptenals, giving a variety of 2-aroyl-2-cyclohexenols in up to 96% ee.
这项工作表明,根据
金属催化,
二茂铁可能是有机催化剂的优良支架。简单易行的基于双官能
二茂铁的方酰胺-膦在7-芳基-7-氧代-5-庚烯的分子内Morita-Baylis-Hillman反应中显示出很高的对映选择性,从而产生了多种2-芳基-
2-环己烯醇到96%ee。