Br h Br2/CCl4 Br CH3 H2~5 C-C-CH3+X c -c-H H Br H Br H CH X=H 88 12 X-OCH3 63% 37%
X C C H Br CH3 H Br X C C CH3 + Br H H Br 2~5 Br 2/CCl 4 X H H CH3 X=H 88% 12% X=OCH3 63% 37%
Me 1630 Br2lACOH AcoNa/Et2O HO 20-25° Me B Me c16 30 Br HO HO Br④ Br (8485%
Me HO C16 H30 Br 2/AcOH AcONa/Et 2 O HO H Br Me Br 20-25 HO H Me Br Br C16 H30 (84~85%)
H3C C 3 C=C-C2Hs Cl2/CH3CO2H CH3 CH-CH-C2H 25 5 C 52% 添加LiC 69% OCOCH CH3CH-CH-C2H5 CH3CH-CH-C2 H5 C OCOCH 3 33%* 13%兴 21% 8%兴
52%* 69%* 33%* 21%* 13%* 8%* 添加 LiCl + CH3 CH CH C2 H5 Cl OCOCH3 CH3 CH CH C2 H5 OCOCH3 Cl CH3 CH CH C2 H5 Cl Cl Cl 2/CH3 CO2 H C C 25。 H3 C H C2 H5 H +
b2/AcoAg/Et2o Oac △ 800
I 2/AcOAg/Et 2 O OAc I H H 80%
Br/LiBr Ph-C≡C-CH3 HOAc/25° Ph B C=C CH Br CH x C=C 3 3 Br 98% 0.2%兴
98%* Ph C C CH3 Br 2/LiBr HOAc/25。 C C Ph Br Br CH3 + C C Ph Br CH3 Br 0.2%*