Chin. J. Org. Chem. ›› 1994, Vol. 14 ›› Issue (2): 171-176. Previous Articles     Next Articles

Original Articles

ω-氯氟烷基醇,烯烃及环氧化物的合成

郭彩云;王珊娣   

  1. 中国科学院上海有机化学研究所
  • 发布日期:1994-04-25

Synthesis of ω-chloroperfluoroalkylated alcohols, olefines and epoxides

GUO CAIYUN;WANGSHANDI   

  • Published:1994-04-25

The free radical addition of Cl(CF~2)~nI (n=2,4,6,8) 1a to allylic compounds (CH~2=CH--CH~2X, X=OH, OAc) and vinyl acetate in the presence of initiator gave the corresponding adducts Cl(CF~2)~nCH~2CHICH~2OH (2a~d), Cl(CF~2)~nCH2 CHICH~2OAC (3a~d) and Cl(CF~2)~nCH~2CHIOAc (4a~d) with good yields. The deiodination of 2a~d to Cl(CF~2)~nCH~2CH~2 CH~2OH (5a~d) by LiAlH~4 went smoothly. The alcohol Cl(CF~2)~nCH=CHCH~2OH 6a~c was formed from the reaction of 2a~d with KOH-methanol, however, the epoxide was obtained with aqueous NaOH. Zinc reduction of 2a~d and 3a~d in isopropanol in the presence of small amounts of acetic acid affoeded the elimination products Cl(CF~2)~n- CH~2CH=CH~2(8a~d). Contrarily the reduction of 4a~d with Zinc, followed by hydrolysis with KOH-methanol-water gave clearly Cl(CF~2)~n(CH~2)~2OH(10a~d).

Key words: EPOXIDE, ALCOHOL, ADDITION REACTION

CLC Number: