1: With phosphazene base P1-t-bu-tris(tetramethylene); Cinchona alkaloid derived chiral ammonium salt in chloroform; toluene T=-50°C; 2 h; 2: With hydrogenchloride in tetrahydrofuran T=0°C; 1 h;
参考文献
Journal of Organic Chemistry, , vol. 69, # 19 p. 6489 - 6492