Regioselective synthesis of pyrrole and indole-fused isocoumarins catalysed by N
$$^\wedge $$
∧
O chelate ruthenium(II) complex
作者:Keisham S Singh、Sneha G Sawant、Werner Kaminsky
DOI:10.1007/s12039-018-1519-z
日期:2018.9
synthesis via annulations of N-heterocyclic carboxylic acids and alkynes with N\(^\wedge \)O chelate ruthenium(II) complex, [RuCl(\(\hbox PySO}_3})(p\)-cymene)] (\(\hbox PySO}_3}\) = 2-pyridinesulfonate) in the presence of Cu(OAc)\(_2}\hbox H}_2}\)O. The reaction proceeds efficiently in DMF but can also be performed in other solvents such as dichloroethane, \(^t}\)AmOH, and water. The annulations
摘要含吡咯和吲哚稠合的香豆素的杂环化合物是通过一锅合成法,通过将N-杂环羧酸和炔烃与N \(^ \ wedge \) O螯合钌(II)配合物环合而成的,获得[RuCl(\(\ hbox PySO} _ 3})(p \)- cymene)](\(\ hbox PySO} _ 3} \) = 2-吡啶磺酸盐)存在Cu(OAc)\(_ 2} \ hbox H} _ 2} \) O。反应在DMF中有效进行,但也可以在其他溶剂中进行,例如二氯乙烷,\(^ t} \) AmOH和水。当将1-甲基吡咯-2-羧酸与1-苯基-1-丙炔进行时,环空反应具有区域选择性。 图形概要 摘要通过杂环酸和炔与N \(^ \ wedge \) O螯合钌(II)配合物[RuCl(\(\ hbox PySO} _ 3})(p \)- cymene)](\(\ hbox PySO} _ 3} \) =