Ultrasound Assisted Solvent/Metal Free Synthesis of 3‐Sulfenylindoles Employing TBATB‐Grafted MCM‐48 as a suitable Heterogeneous Catalyst.

2019 ◽  
Vol 4 (24) ◽  
pp. 7082-7089 ◽  
Author(s):  
Sukanya Hazarika ◽  
Pranjit Barman
Keyword(s):  
Heterogeneous Catalyst ◽  
Metal Free ◽  
Ultrasound Assisted ◽  
Solvent Metal

Nitrogen enriched polytriazine as a metal-free heterogeneous catalyst for the Knoevenagel reaction under mild conditions

2018 ◽  
Vol 42 (15) ◽  
pp. 12924-12928 ◽  
Author(s):  
Monika Chaudhary ◽  
Paritosh Mohanty
Keyword(s):  
Heterogeneous Catalyst ◽  
Knoevenagel Reaction ◽  
Ambient Conditions ◽  
Metal Free ◽  
Mild Conditions

A nitrogen-enriched nanoporous polytriazine was used as a metal-free heterogeneous organocatalyst for high-yielding ultra-fast Knoevenagel reactions under ambient conditions.

A Metal‐free Approach for the Synthesis of Privileged 4 H ‐pyrido[1,2‐ a ]pyrimidin‐4‐one Derivatives over a Heterogeneous Catalyst

2019 ◽  
Vol 4 (36) ◽  
pp. 10737-10741
Author(s):  
Sivagami Mathavan ◽  
Ajith Kumar Durai Raj ◽  
Rajesh B. R. D. Yamajala
Keyword(s):  
Heterogeneous Catalyst ◽  
Metal Free

A rapid metal free synthesis of 5-substituted-1H-tetrazoles using cuttlebone as a natural high effective and low cost heterogeneous catalyst

RSC Advances ◽  
2015 ◽  
Vol 5 (62) ◽  
pp. 49849-49860 ◽  
Author(s):  
Sara S. E. Ghodsinia ◽  
Batool Akhlaghinia
Keyword(s):  
Heterogeneous Catalyst ◽  
Sodium Azide ◽  
High Efficiency ◽  
Low Cost ◽  
Cycloaddition Reaction ◽  
Metal Free ◽  
Substituted 1

A convenient, rapid and metal free synthesis of 5-substituted-1H-tetrazoles by [3 + 2] cycloaddition reaction of nitriles with sodium azide. Cuttlebone as a natural low cost heterogeneous catalyst affords 5-substituted-1H-tetrazoles rapidly with high efficiency.

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