HO E2 C-C C=C、+N(CH3)3 N(CH3)3 FN(CH3)3 HO CHrCH, CH,CH-CH D CH3CH, CH, CHCH 94:6 CH3 CHO CHFCHCH3 ⑨DOrganic Chemistry Organic Chemistry Xiamen Xiamen University University C C H N(CH 3 ) 3 HO E2 C C + N(CH 3 ) 3 CH 3CH 2CH 2CHCH 3 CH 3CH 2CH 2CH CH 2 N(CH 3 ) 3 HO CH 3CH 2CH CHCH 3 94 : 6