1: oxazolidin-2-one With n-butyllithium in tetrahydrofuran; hexane T=-78°C; 0.5 h; 2: 2-bromo-1-chloropentan-1-one in tetrahydrofuran; hexane T=-78°C; 3 h; Further stages.;

1.1: (COCl)2; DMF / CH2Cl2 / 2 h / 20 °C 2.1: n-BuLi / tetrahydrofuran; hexane / 0.5 h / -78 °C 2.2: tetrahydrofuran; hexane / 3 h / -78 °C View Scheme

N-bromosuccinmide 1) formation of boron enolate; Multistep reaction;

暂无反应条件数据