0 °C or rt without the use of any catalytic reagent to give good yields of Z-2-sulfanylvinylsulfonyl derivatives with total diastereoselectivity. On the other hand, in the presence of 1.1 equiv of NaH in THF, the same reaction affords the corresponding E-diastereomer also with total diastereoselectivity.
烷基和芳基
硫化物在0°C或室温下,在CH 3 CN中与等摩尔量的对
甲苯磺酰基
乙炔反应,无需使用任何催化试剂,即可得到具有良好的非对映选择性的Z -2-
硫烷基
乙烯基磺酰基衍
生物。另一方面,在THF中1.1当量的NaH的存在下,相同的反应也提供相应的E-非对映异构体,其也具有总非对映选择性。