Reaction of the tosyl imides 6 and 8 of 1,3-dithiane and 1,3,5-trithiane with sodium hydride and alkyl iodides in DMF yields anti alkylated products in all cases. In the case of the trithiane imide 8, both mono-and di-alkylation is observed. Preparation of cyclic sulfimide analogues of Eliel's oxathiane is shown to be problematic, but a new class of O,S-acetals, namely 4-bromophenylthiomethyl (BPTM)
在所有情况下,在
DMF中1,3-二
硫醚和1,3,5-三
硫胺的
甲苯磺酰基
酰亚胺6和8与氢化
钠和烷基
碘的反应都会产生抗烷基化的产物。在三
噻吩酰亚胺8的情况下,观察到单烷基化和二烷基化。Eliel oxathiane的环状
硫酰亚胺类似物的制备显示有问题,但是引入了新的O,S-
乙缩醛,即4-
溴苯硫基甲基(B
PTM)醚来替代其麻烦的苯基
硫代甲基(
PTM)类似物。