Catalytic Cyclo-oligomerization of β-Propiothiolactone by a Dirhenium Complex. A Convenient Route to New Polythiolactone Macrocycles
作者:Richard D. Adams、Mingsheng Huang、Wen Huang、Joachim A. Queisser
DOI:10.1021/ja962321+
日期:1996.1.1
shown that Resub 2}(CO)sub 9}(NCMe)(1) can serve as a catalyst for the macrocyclization of thietanes. We have now found that 1 also activates beta}@-propiothiolactone, SCHsub 2} CHsub 2}C=O(2), toward opening of the heterocyclic ring under mild conditions. The known polymer (SCHsub 2}CHsub 2}C=O)sub n}sup 2} (55% yield) and a mixture of new cyclooligomers (SCHsub 2}-CHsub 2}C=O)sub n}, two of
在最近的研究中,我们已经表明 Resub 2}(CO)sub 9}(NCMe)(1) 可以作为硫杂环丁烷大环化的催化剂。我们现在发现 1 还激活 beta}@-propiothiolactone, SCHsub 2} CHsub 2}C=O(2),在温和条件下打开杂环。已知聚合物 (SCHsub 2}CHsub 2}C=O)sub n}sup 2}(55% 产率)和新环低聚物的混合物(SCHsub 2}-CHsub 2}C =O)sub n},其中两个,1,5,9,13-tetrathiacyclohexadecane-2,6,10,14-tetrone (3)(22% 分离产率)和 1,5,9,13,17 , 21-hexathiacyclotetracosane-2,6,10,14,18,22-hexone (4), n = 6 (2% 分离产率), 已被分离和