CH3 CH3 Ph-C—C—Ph OH OH CH 3 CH 3 CH3-C—C-Ph+Ph-C—c—CH3 o Ph o Ph 主产物 次产物
主产物 次产物 + Ph C C CH3 CH3 O Ph CH3 C C Ph CH3 O Ph H Ph C C Ph CH3 CH3 OH OH
Phph P-CH3OC6H5-C-C-C6H5OCH3-P OHOH C6H5 OCH3-P Ph--c-C ○ Ph coh5OCH3P 940 十 Ph P-CH3OC6H5-C-C-Ph O C6H5OCH3-p 6
94% 6% + P CH3 OC6 H5 C C C6 H5 OCH3 Ph O Ph p C6 H5 OCH3 P C6 H5 OCH3 P Ph C C O Ph H P CH3 OC6 H5 C C C6 H5 OCH3 P Ph Ph OHOH
(2)不对称的连二乙醇 r1 R2 RC—C-R2 OH OH 重排的方向决定于羟基失去的难易 羟基离去后碳正离子的稳定性: 叔碳>仲碳>伯碳
(2)不对称的连二乙醇 重排的方向决定于羟基失去的难易 羟基离去后碳正离子的稳定性： 叔碳>仲碳>伯碳 R1 C C R2 R1 OH R2 OH
Ph CH3 sOz Ph CH 3 Ph-C—C—CH 3 Ph-C—c—CH3 OHOH AC2O Ph >Ph-C—C—CH Ph CH3 CH3 O Ph-C—C—CH3 OH
Ph C C CH3 Ph CH3 O Ph C C CH3 Ph CH3 OH Ac2 O Ph C C CH3 Ph CH3 OH OH H2 SO4 Ph C C CH3 Ph CH3 OH
P-CH3OC6H5 H2soz P-CH2OCH5-C—C-Ph OH OH P-CH3OC6H5 P-CH3○c6Hs-C c-Ph 72% Ph o Ph P-CHrOCkH3-C--C-Ph 28%0 o C6H5OCH3-P
72% 28% + P CH3 OC6 H5 C C OH P CH3 OC6 H5 Ph OH Ph H2 SO4 P CH3 OC6 H5 C C Ph P CH3 OC6 H5 O Ph P CH3 OC6 H5 C C O C6 H5 OCH3 Ph P Ph