3-[(香豆基)羰基] -3a,8b-二氢茚并[1,2- b ]吡咯-4(1 H)-的合成及其向带有螺[异苯并呋喃-1,2'-吡咯]部分的香豆素的转化通过氧化裂解反应的化合物†
摘要:
在三乙胺作为碱性催化剂的存在下,通过水杨醛,4-羟基-6-甲基-2 H-吡喃-2-酮,苄胺和茚三酮的反应制备带有茚并吡咯部分的新香豆素衍生物。所述化合物通过高碘酸的氧化裂解反应产生带有香豆素的螺[异苯并呋喃-1,2'-吡咯]部分化合物。易于处理,易于纯化和中等至良好的产率是本方法的吸引人的特征。还使用IR,质量,元素分析,1 H NMR,13 C NMR和X射线晶体学对产物进行了表征。
3-[(香豆基)羰基] -3a,8b-二氢茚并[1,2- b ]吡咯-4(1 H)-的合成及其向带有螺[异苯并呋喃-1,2'-吡咯]部分的香豆素的转化通过氧化裂解反应的化合物†
摘要:
在三乙胺作为碱性催化剂的存在下,通过水杨醛,4-羟基-6-甲基-2 H-吡喃-2-酮,苄胺和茚三酮的反应制备带有茚并吡咯部分的新香豆素衍生物。所述化合物通过高碘酸的氧化裂解反应产生带有香豆素的螺[异苯并呋喃-1,2'-吡咯]部分化合物。易于处理,易于纯化和中等至良好的产率是本方法的吸引人的特征。还使用IR,质量,元素分析,1 H NMR,13 C NMR和X射线晶体学对产物进行了表征。
Envirocat EPZ-10: An efficient catalyst for the synthesis of 3-acetoacetylcoumarins
作者:T.S. Shaikh、K.A. Undale、D.S. Gaikwad、D.M. Pore
DOI:10.1016/j.crci.2011.08.002
日期:2011.11
A simple, efficient and ecofriendly procedure has been developed for the synthesis of 3-acetoacetylcoumarins from salicylaldehyde(s) and 4-hydroxy-6-methyl-2H-pyran-2-one using EPZ-10 as a catalyst in ethanol medium at reflux condition. The present methodology offers several advantages such as excellent yields, short reaction time and use of EPZ-10 as an eco-friendly catalyst. (C) 2011 Academie des sciences. Published by Elsevier Masson SAS. All rights reserved.
Synthesis of 3-(3-Methyl-1-aryl-1<i>H</i>-pyrazol-5-yl)-2<i>H</i>-2-chromen-2-one Derivatives via a One-Pot, Three-Component Reaction
作者:Abdolali Alizadeh、Rashid Ghanbaripour
DOI:10.1080/00397911.2013.867507
日期:2014.6.3
An efficient synthesis of 3-(3-methyl-1-aryl-1H-pyrazol-5-yl)-2H-2-chromen-2-one derivatives by the reaction of salicylaldehydes, 4-hydroxy-6-methyl-2H-pyran-2-one, and arylhydrazine in acetonitrile under reflux condition and in the presence of piperidine is reported. This three-component reaction has some advantages such as ease of handling, good yields, and easy purification. All structures were confirmed by infrared, mass, H-1 NMR, and C-13 NMR spectroscopy.
Synthesis of 3-[(coumarinyl)carbonyl]-3a,8b-dihyroindeno[1,2-b]pyrrole-4(1H)-ones and their conversion to coumarin bearing spiro[isobenzofuran-1,2′-pyrrole] moiety compounds via oxidative cleavage reaction
New coumarin derivatives bearing an indenopyrrole moiety were prepared by the reaction of salicylaldehyde, 4-hydroxy-6-methyl-2H-pyran-2-one, benzylamine and ninhydrin in the presence of triethylamine as a basic catalyst; the as mentioned compounds lead to coumarin bearing spiro[isobenzofuran-1,2′-pyrrole] moiety compounds via an oxidative cleavage reaction by periodic acid. Ease of handling, easy
在三乙胺作为碱性催化剂的存在下,通过水杨醛,4-羟基-6-甲基-2 H-吡喃-2-酮,苄胺和茚三酮的反应制备带有茚并吡咯部分的新香豆素衍生物。所述化合物通过高碘酸的氧化裂解反应产生带有香豆素的螺[异苯并呋喃-1,2'-吡咯]部分化合物。易于处理,易于纯化和中等至良好的产率是本方法的吸引人的特征。还使用IR,质量,元素分析,1 H NMR,13 C NMR和X射线晶体学对产物进行了表征。