在DMF中于100°C进行exo-或内-2-降冰片烷基亚磺酰亚氨基汞氯化物(exo -A或endo -A)的热分解仅产生exo -2-降冰片基氯化亚汞。在类似条件下,赤-3,3-二甲基丁基-1- sulfinatomercuric氯-1,2- d 2倍的产率的11混合物赤-和苏式-3,3-二甲基丁基-1-升汞-1,2- d 2。内-2-氯降冰片烯基汞在反应条件下不被表观,并且内-A从部分分解中回收而未检测到差向异构。这些结果表明产物形成步骤是通过立体化学不稳定的中间体进行的。尽管一些定性实验提供了针对自由基链机制的证据,但尚未建立详细的反应途径。
Mild, selective deprotection of thioacetates using sodium thiomethoxide
作者:Owen B. Wallace、Dane M. Springer
DOI:10.1016/s0040-4039(98)00421-3
日期:1998.4
A mild method for the deprotection of thioacetates is described. The reaction can be conveniently carried out at room temperature, and is compatible with a wide range of functionality. The procedure was shown to chemoselectively remove a thioacetate in the presence of an acetate, (C) 1998 Elsevier Science Ltd. All rights reserved.