New Route for the Synthesis of Thiazolidine 2,4dione Azepine Derivatives
作者:Devendar Reddy Kommidi、Ramakanth Pagadala、Mohan Varkolu、Neil A. Koorbanally、Brenda Moodley
DOI:10.1002/jhet.2676
日期:2017.3
A new facile ionicliquid mediated proficient method is developed for the synthesis of structurally new thiazepine and oxazepine derivatives of thiazolidine 2,4‐dione. This protocol proceeds through, one‐pot three component reaction between fused cyclic ketone, substituted aromatic aldehyde, 2‐amino phenol and 2‐amino thiobenzene at roomtemperature to yield structurally new derivatives.
Microwave Assisted Urea-Acetic Acid Catalyzed Knoevenagel Condensation of Ethyl Cyanoacetate and 1,3-Thiazolidine-2,4-dione with Aromatic Aldehydes under Solvent Free Condition
作者:Pravin. T. Tryambake
DOI:10.14233/ajchem.2017.20695
日期:——
conditions [17], microwave irradiation [18], piperidine in ethanol [19a], piperidinium acetate in toluene under reflux conditions [19b], piperidinium acetate in DMF under microwave irradiation [20], glycine and sodium carbonate in H2O under reflux conditions [21], grinding with ammonium acetate in the absence of solvents [22], alum in H2O [23], Baker’s yeast [24], KF-Al2O3 under microwave irradiation [25]
The present invention provides a pentadienamide derivative represented by the formula (I):
(wherein R
1
represents substituted or unsubstituted aryl or a substituted or unsubstituted aromatic heterocyclic group;
R
2
represents substituted or unsubstituted aryl, a substituted or unsubstituted aromatic heterocyclic group, a substituted or unsubstituted heteroalicyclic group, or the like;
R
3
represents a hydrogen atom or is combined together with R
4
and the adjacent nitrogen atom thereto to form a substituted or unsubstituted heterocyclic group;
R
4
represents substituted or unsubstituted aryl, a substituted or unsubstituted aromatic heterocyclic group, a substituted or unsubstituted heteroalicyclic group, or the like, or is combined together with R
3
and the adjacent nitrogen atom thereto to form a substituted or unsubstituted heterocyclic group; and
R
5
, R
6
, and R
7
may be the same or different, and each represents a hydrogen atom or methyl)
or a pharmaceutically acceptable salt thereof, and the like.