Stereoselective synthesis of allyl and homoallyl alcohols by the ring opening reactions of 2-(2-phenylthiocyclobutyl)oxiranes and oxetanes
作者:Tooru Fujiwara、Yumiko Tsuruta、Takeshi Takeda
DOI:10.1016/0040-4039(95)01815-y
日期:1995.11
Titanium(IV)-promoted ring opening reactions of 2-(2-phenylthiocyclobutyl)oxiranes and the corresponding oxetanes proceeded with high stereospecificity to give allyl and homoallyl alcohols in good yields. The reversal of stereoselectivity was observed in the similar reaction of the oxiranes using ethylaluminum dichloride as a catalyst.
钛(IV)促进的2-(2-苯基硫代环丁基)氧杂环丁烷与相应的氧杂环丁烷的开环反应以高立体定向性进行,从而以高收率得到烯丙基和高烯丙基醇。使用二氯化乙基铝作为催化剂,在二恶英的类似反应中观察到立体选择性的逆转。