作者:Milton J. Kornet、Ralph Daniels
DOI:10.1002/jhet.5570170721
日期:1980.11
The free radical addition of thioacetic acid to 1,2-dicarbethoxy-1,2,3,6-tetrahydropyridazines gave high yields of 1,2-dicarbethoxy-4-S-thiolacetoxypiperidazines. The latter compounds served as the key intermediates in the preparation of 4-piperidazinethiols. The thiolacetoxy derivatives were partially hydrolyzed to afford the related 1,2-dicarbethoxy-4-piperidazinethiols. Complete hydrolysis of the
将硫代乙酸自由基加成到1,2-二碳乙氧基-1,2,3,6-四氢哒嗪中可以得到高产率的1,2-二碳乙氧基-4- S-硫代乙酰氧基哌嗪。后者化合物是制备4-哌啶嗪硫醇的关键中间体。巯基乙酰氧基衍生物被部分水解,得到相关的1,2-二碳乙氧基-4-哌啶嗪硫醇。硫羟乙酸酯的完全水解产生4-哌啶嗪硫醇。最后,氢化铝锂将硫醇乙酰氧基酯还原,产生了一系列的1,2-二甲基-4-哌嗪嗪硫醇。仅4-哌啶嗪硫醇盐酸盐显示出明显的抗辐射活性。