Design and Synthesis of Pyrrolotriazepine Derivatives: An Experimental and Computational Study
作者:Nurettin Menges、Ozlem Sari、Yusif Abdullayev、Safiye Sağ Erdem、Metin Balci
DOI:10.1021/jo4001228
日期:2013.6.7
unexpectedly, the six-membered cyclization product, 2-amino-3-methylpyrrolo[1,2-a]pyrazin-1(2H)-one as the major product. The expected cyclization product with a seven-membered ring, 4-methyl-2,3-dihydro-1H-pyrrolo[2,1-d][1,2,5]triazepin-1-one was formed as the minor product and was converted quantitatively to the major product. The formation mechanism of the products was investigated, and the results obtained
将在C-2位具有羰基的吡咯衍生物转化为N-炔丙基吡咯。这些化合物与一水合肼的反应导致形成5 H-吡咯并[2,1- d ] [1,2,5]三氮杂卓衍生物。这些化合物的合成从吡咯开始以三个步骤完成。另一方面,尝试在氮原子上被炔丙基取代的吡咯酯环化,却意外地得到了六元环化产物2-氨基-3-甲基吡咯并[1,2 - a ]吡嗪-1(2 H)-一为主要产品。具有七元环的预期环化产物4-甲基-2,3-二氢-1 H-吡咯并[2,1- d] [1,2,5]三氮杂-1-酮形成为次要产物,并定量转化为主要产物。研究了产物的形成机理,并且所获得的结果也得到了理论计算的支持。