Organic chemistry
A green and highly effective protocol for the synthesis of N,N′-alkylidene bisamides using saccharin-N-sulfonic acid

Abdolkarim Zare; Manije Dianat; Nasrin Pishahang; Roghayyeh Khanivar; Soheila Kaman-Torki; Fatemeh Fakhraei; Zahra Kordrostami; Masoud Sadeghei-Takallo

Volume 8, Issue 1 , January 2020, , Pages 58-66

https://doi.org/10.30473/icc.2019.44250.1514

Abstract
  A green and highly effective solvent-free protocol has been reported for the synthesis of N,N′-alkylidene bisamides via the reaction of arylaldehydes (1 eq.) with primary amides (2 eq.) in the presence of saccharin-N-sulfonic acid (SaSA) as a solid-acid catalyst. The mentioned compounds have been ...  Read More

A green and highly effective protocol for the synthesis of N,N′-alkylidene bisamides using saccharin-N-sulfonic acid


Organic chemistry
Phthalimide-N-sulfonic acid and Isatin-N-sulfonic acid as highly efficient catalysts for the synthesis of bis-coumarins

Abdolkarim Zare; Jalal Sanjideh

Volume 7, Issue 2, pp. 90-159, Serial No. 23 , April 2019, , Pages 139-145

https://doi.org/10.30473/icc.2018.4612

Abstract
  Two highly efficient protocols for the production of bis-coumarins under solvent-free conditions have been introduced. The reaction of 4-hydroxycoumarin (2 eq.) with arylaldehydes (1 eq.) using phthalimide-N-sulfonic acid (PhtSA) or isatin-N-sulfonic acid (IsSA), as solid-acid catalysts, afforded the ...  Read More

Phthalimide-N-sulfonic acid and Isatin-N-sulfonic acid as highly efficient catalysts for the synthesis of bis-coumarins


Organic chemistry
Melamine trisulfonic acid as a highly efficient catalyst for the synthesis of polyhydroquinolines under solvent-free conditions

Abdolkarim Zare; Maryam Dashtizadeh; Maria Merajoddin

Volume 3, Issue 3, pp. 180-282,Serial No. 8 , July 2015, , Pages 208-217

Abstract
  A highly efficient, simple and clean solvent-free protocol for the synthesis of polyhydroquinolines is described. The one-pot multi-component condensation reaction between arylaldehydes, dimedone (5,5-dimethylcyclohexane-1,3-dione), β-ketoesters and ammonium acetate in the presence of catalytic ...  Read More

Melamine trisulfonic acid as a highly efficient catalyst for the synthesis of polyhydroquinolines under solvent-free conditions


Organic chemistry
1-Carboxymethyl-3-methylimidazolium chloride {[cmmim]Cl} as an efficient catalyst for the solvent-free synthesis of bis(indolyl)methanes

Ahmad Reza Moosavi-Zare; Mahdi Pouraskar-Borazjani; Zahra Naz

Volume 2, Issue 3, pp. 162-231, Serial No. 4 , July 2014, , Pages 168-172

Abstract
  1-Carboxymethyl-3-methylimidazolium chloride {[cmmim]Cl} is utilized as a highly efficient and reusable catalyst for the synthesis of bis(indolyl)methanes by the condensation reaction of indole with arylaldehydes under solvent-free conditions at room temperature. In summary, the presented method have ...  Read More

1-Carboxymethyl-3-methylimidazolium chloride {[cmmim]Cl} as an efficient catalyst for the solvent-free synthesis of bis(indolyl)methanes


Melamine trisulfonic acid as a highly efficient catalyst for the synthesis of 14-aryl-14H-dibenzo[a,j]xanthenes under solvent-free conditions

Abdolkarim Zare; Fatemeh Monfared

Volume 2, Issue 1, pp. 1-81, Serial No. 2 , January 2014, , Pages 1-17

Abstract
  Melamine trisulfonic acid (MTSA) is utilized as a highly efficient catalyst for the solvent-free condensation reaction of 2-naphthol (2 eq.) with arylaldehydes (1 eq.) under conventional thermal as well as microwave conditions to give the d  Read More

Melamine trisulfonic acid as a highly efficient catalyst for the synthesis of 14-aryl-14H-dibenzo[a,j]xanthenes under solvent-free conditions