Electrophilic substitution in pyrroles. Part 5. Reaction of dipyrrylmethanes with arenediazonium ions
作者:Anthony R. Butler、Peter T. Shepherd
DOI:10.1039/p29800000113
日期:——
Dipyrrylmethanes react with arenediazonium ions in acid solution to form azopyrroles and formaldehyde. At low pH cleavage of the methylene bridge is brought about by attack of hydrogen ions, but at higher pH arenediazonium ions assume this role. In the reaction of benzylpyrrole, benzyl alcohol was detected as a product, suggesting formation of a benzyl carbonium ion. The relevance of these studies to the
二吡咯甲烷在酸性溶液中与苯并重氮离子反应形成偶氮吡咯和甲醛。在低pH值下,亚甲基桥的裂解是由氢离子的侵蚀引起的,但在较高pH值下,ned重氮离子承担了这一作用。在苄基吡咯的反应中,检测到苯甲醇为产物,表明形成了苄基碳鎓离子。考虑这些研究与胆红素的范登伯格试验的相关性。