3-Lithiopropyl tert-Butyl Thioether: A New γ-Functionalised Organolithium Compound (d3-Reagent) in Synthetic Organic Chemistry
作者:Juan Almena、Francisco Foubelo、Miguel Yus
DOI:10.1016/0040-4020(95)00749-x
日期:1995.10
The reaction of 3-bromo or 3-chloropropyl tert-butyl thioether (1a or 1'a) with an excess of lithium powder and a catalytic amount of naphthalene (2,5 mol %) in THF at −78 °C followed by treatment with an electrophile (H2O, D2O, Me2S2, CO2) at the same temperature leads, after hydrolysis, to the expected products 2. Alternatively the process can be carried out under Barbier-type reaction conditions
在-78°C下使3-溴或3-氯丙基叔丁基硫醚(1a或1'a)与过量的锂粉和催化量的萘(2.5 mol%)在THF中反应用亲电子试剂(H 2 O,D 2 O,Me 2 S2,CO 2)在相同温度下水解后可得到预期的产物2。或者,该方法可以在Barbier型反应条件下进行[锂化反应亲电子的存在:ME 3的SiCl,卜吨CHO,苯甲醛中,Me 2 CO,(CH 2)4 CO,(CH 2)5 CO,PhCOMe,c -C 3 H 5 COPh],并在0°C下使用DTBB作为芳烃催化剂。去叔产品-butylation 2与汞(II)乙酸盐和取决于起始硫醚的结构氢硫酸的产率不同硫化衍生物。