作者:Cevher Altuğ、Yasar Dürüst、Mark C. Elliott、Benson M. Kariuki、Tillique Rorstad、Mark Zaal
DOI:10.1039/c0ob00286k
日期:——
Alkylidenepyrrolidines 1, 21, 24 and 26 undergo reactions with nitrile oxides and nitrilimines or their precursors to give a range of novel heterocyclic compounds. With alkylidenepyrrolidine ester 1, nitrolic acids give products in which the liberated nitrous acid reacts with the alkylidenepyrrolidine, followed by two cycloadditions to give adducts 3. In contrast, hydroximoyl chlorides give isoxazoles
Alkylidenepyrrolidines 1,21,24和26经历与氧化腈和nitrilimines或它们的前体的反应,得到了一系列新的杂环化合物。与亚烷基亚吡咯烷酯1一起,硝酸可得到游离的产物。亚硝酸与亚烷基吡咯烷反应,然后进行两次环加成反应,得到加合物3。相反,大概是通过环加成/消除,羟肟基氯得到异恶唑10。用肼基氯,发生亚烷基吡咯烷的简单酰化,得到化合物17。对于磺酰基亚烷基吡咯烷酮24和26,在亚胺互变异构体上的环加成是优选的途径,在后一种情况下发生立体选择性反应。