2019
DOI: 10.1002/jhet.3806
| View full text |Cite|
|
Sign up to set email alerts
|

Abstract: An efficient and promising synthetic approach to assemble skeletons of multifunctionalized pyridine derivatives in presence of recyclable heterogeneous sulfated tin oxide (STO) catalyst has been evolved. The STO catalyst was used as a promoter for the cyclocondensation process in ethanol at 70°C. Overall performance of this catalyst was attributed to the cooperative contribution of its Lewis and Brønsted-Lowry acidic sites. Nanosized STO catalyst was synthesized by using sol-gel process and characterized by Fo… Show more

Help me understand this report

Search citation statements

Order By: Relevance

Paper Sections

Select...
2
1
1

Citation Types

0
4
0

Year Published

2020
2020
2022
2022

Publication Types

Select...
6

Relationship

3
3

Authors

Journals

citations
Cited by 13 publications
(4 citation statements)
references
References 51 publications
0
4
0
Order By: Relevance
“…In extension to our earlier effort towards finding new methods for construction of biologically active small heterocyclic molecules, STO was used as a recyclable solid catalyst. [ 38,39 ] Keeping these features in mind, we initially developed a model reaction of acetoacetanilide, ammonium hydroxide, and different aldehydes in the presence of STO (Scheme 1).…”
Section: Resultsmentioning
confidence: 99%
“…In extension to our earlier effort towards finding new methods for construction of biologically active small heterocyclic molecules, STO was used as a recyclable solid catalyst. [ 38,39 ] Keeping these features in mind, we initially developed a model reaction of acetoacetanilide, ammonium hydroxide, and different aldehydes in the presence of STO (Scheme 1).…”
Section: Resultsmentioning
confidence: 99%
“…11 Varala and co-workers published STO-catalyzed cyclocondensation of the synthesis of fully functionalized pyridines from substituted aldehydes, malononitrile, aliphatic ketone and ammonium hydroxide in ethanol at 70 °C (Scheme 4). 12 Due to cooperating contribution of its Lewis and Brønsted acidic sites, as shown in Figure 1, efficacy of the catalyst is enhanced. Nano sized STO catalyst is compatible with several substrates and reusable.…”
Section: -1-3 Synthesis Of Fully Functionalized Pyridinesmentioning
confidence: 99%
“…We anticipated that the use of Mg(ClO 4 ) 2 in combination with inexpensive and non-hazardous ZrCl 4 , [37][38][39][40][41][42][43] would be beneficial for the development of novel bimetallic catalyst. In continuation of our efforts in designing novel synthetic strategies for the application in the synthesis bioactive molecules, [44][45][46][47][48] herein, we report a highly efficient acylation of alcohols with acetic acid at room temperature in presence of ZrCl 4 -Mg(ClO 4 ) 2 (Scheme 1).…”
Section: Introductionmentioning
confidence: 99%