An efficient, chiralbifunctional phase-transfer catalyst with an intramolecular amino functionality has been designed and successfully applied to highly enantioselective amination of 3-aryloxindoles and 3-arylbenzofuran-2(3H)-ones with bis(adamantyl) azodicarboxylate. Optically active amination products were generally obtained in high yield with high enantioselectivity. The origin of stereoselectivity
Highly Enantioselective Catalytic Benzoyloxylation of 3-Aryloxindoles Using Chiral VAPOL Calcium Phosphate
作者:Zuhui Zhang、Wenhua Zheng、Jon C. Antilla
DOI:10.1002/anie.201006595
日期:2011.2.1
Keeping straight: The highlyenantioselective title reaction provides novel and straightforward access to 3‐hydroxy‐2‐oxindole derivatives (see scheme). This transformation signifies the first example of a chiralphosphatecalcium salt activating a benzoyl peroxide.
COAP/Pd-Catalyzed Linear Asymmetric Allylic Alkylation for Optically Active 3,3-Disubstituted Oxindole Derivatives with a Four-Carbon Amino Side Chain
作者:Wen-Kai Liu、Bai-Lin Wang、Sheng-Suo Zhou、Jun-Hao Shen、Zheng Wang、Xing-Wang Wang
DOI:10.1021/acs.orglett.2c03902
日期:2023.1.13
An asymmetric linear selective allylicalkylation of vinylaziridines with 3-aryl oxindoles has been developed by using a chiral oxamide-phosphine (COAP-Bn-OMe-p)/palladium complex in methanol, which furnished a wide variety of 3,3-disubstituted oxindole derivatives in good yields with excellent regio- and enantioselectivities.
通过在甲醇中使用手性草酰胺-膦 (COAP-Bn-OMe- p )/钯络合物,开发了乙烯基氮丙啶与 3-芳基羟吲哚的不对称线性选择性烯丙基烷基化反应,可提供多种 3,3-二取代羟吲哚具有良好区域选择性和对映选择性的高收率衍生物。