CH2 CH CHo CH, CH 31a+NH2(夜) 理工 H2C Br (x i)4CH3MgC1 sicl4 (x ii) 2CH3 CH2 CH(CH3)MgCI HgCl2 (xiii)(CH3CH2bCLi + H2O (xiv)BrCH2)4Br Nahs(lmol) NaOH (X V)(CH3h CHC(CH3)3 Br2(1mol) D2O 光 无水乙醚 202l/1/212021/1/21 6