Insertion of carbon disulfide and the nitrile group into the diaziridine ring of 6-aryl-1,5-diazabicyclo[3.1.0]hexanes in ionic liquids catalyzed by BF3 · Et2O
作者:Yu. S. Syroeshkina、V. V. Kuznetsov、K. A. Lyssenko、N. N. Makhova
DOI:10.1007/s11172-010-0018-2
日期:2009.2
simple one-pot methods for the synthesis of 3-aryldihydro-5 H-pyrazolo[1,2- c][1,3,4]thiadiazole-1-thiones and 1-aryl-6,7-dihydro-1 H,5H-pyrazolo-[1,2-a][1,2,4]triazoles in high yields. Dipolar intermediates of new reactions, which are direct precursors of the final products, were detected by NMR methods. One of the intermediates was isolated and characterized. The reaction of 6-aryl-1,5-diazabicyclo[3
本研究揭示了导致二氮杂环扩张的两个新反应,即 CS2 分子和活化腈的 CN 基团插入 6-芳基-1,5-二氮杂双环的二氮丙啶片段的 CN 键。 [3.1.0]己烷。这些反应只能在有BF3·Et2O作为催化剂的离子液体中进行。基于这些反应,我们开发了简单的一锅法合成 3-芳基二氢-5 H-吡唑并[1,2-c][1,3,4]噻二唑-1-硫酮和1-芳基-6, 7-二氢-1 H,5H-吡唑并-[1,2-a][1,2,4]三唑,收率高。新反应的偶极中间体是最终产物的直接前体,通过核磁共振方法检测。其中一种中间体被分离和表征。6-芳基-1,5-二氮杂双环[3.1.