开发了手性 Fe II (N4) 配合物 (N4 = ( R , R )- N , N '-bis(2-isopropylquinolin-8-yl)-1,2-diphenylethane-1,2-diamine) 用于不对称甲硅烷基烯醇醚(包括无环和环己烯酮衍生的)与 α,β-不饱和 2-酰基咪唑的共轭加成。这种 Fe II 配合物是一种有效的手性路易斯酸,用于合成一系列手性 1,5-二羰基合成子和环己烯酮衍生物,具有高产率和对映选择性(高达 99% ee)。
The nitrosoDiels-Alder (NDA) reaction is an attractive strategy for the synthesis of 3,6-dihydro-1,2-oxazines and 1-amino-4-hydroxy-2-ene derivatives. Herein we report the Cu(I)-DTBM-Segphos catalyzed asymmetric intermolecular NDA reaction of variously substituted cyclic 1,3-dienes using highly reactive nitroso compounds derived from pyrimidine and pyridazine derivatives. In most of the cases studied