由β-氧代硫代酰胺1与苯甲酰溴2反应制得的α-芳基酮烯N,S缩醛3在微波辐射下依次环化生成吡咯并[2,1 - b ]噻唑-6-酮6,收率高。在一个锅中区域选择性地进行双环化,并根据该方案制备了多种功能化的吡咯并[2,1-b]噻唑-6-酮。微波条件下的环化方式与常规加热不同。J.杂环化学。(2010)。
Microwave assisted one-pot synthesis of pyrrolo[2,1-<i>b</i>]thiazol-6-ones from α-aroyl ketene-<i>N</i>,<i>S</i>-acetals
作者:Paulson Mathew、M. Prasidha、C. V. Asokan
DOI:10.1002/jhet.334
日期:——
α‐Aroyl ketene‐N,S‐acetals 3 prepared by the reaction of β‐oxothioamides 1 with phenacyl bromides 2, underwent sequential cyclizations under microwave irradiation to afford pyrrolo[2,1‐b]thiazol‐6‐ones 6 in good yields. A double cyclization takes place regioselectively in onepot and variety of functionalized pyrrolo[2,1‐b]thiazol‐6‐ones were prepared by this protocol. The mode of cyclization under
由β-氧代硫代酰胺1与苯甲酰溴2反应制得的α-芳基酮烯N,S缩醛3在微波辐射下依次环化生成吡咯并[2,1 - b ]噻唑-6-酮6,收率高。在一个锅中区域选择性地进行双环化,并根据该方案制备了多种功能化的吡咯并[2,1-b]噻唑-6-酮。微波条件下的环化方式与常规加热不同。J.杂环化学。(2010)。