1: Et3N / tetrahydrofuran / -78 °C 2: 88 percent / BF3*Et2O, paraformaldehyde / acetone; H2O / 16 h / Ambient temperature View Scheme
参考文献
Reese, Colin B.; Sanders, H. Paul
Journal of the Chemical Society, Perkin Transactions 1: Organic and Bio-Organic Chemistry (1972-1999), 1982 , # 11 p. 2719 - 2724
