Chitosan and functionalized graphene oxide nanocomposite as a novel and highly efficient catalyst for production of bis-coumarins under solvent-free conditions

2021 ◽  
Author(s):  
Zhale Atashrouz ◽  
Esmael Rostami ◽  
Abdolkarim Zare
Keyword(s):  
Graphene Oxide ◽  
Solvent Free ◽  
Functionalized Graphene ◽  
Efficient Catalyst ◽  
Functionalized Graphene Oxide ◽  
Highly Efficient ◽  
Solvent Free Conditions

scholarly journals Multisulfonate hyperbranched polyglycerol functionalized graphene oxide as an efficient reusable catalyst for green synthesis of benzo[a]pyrano-[2,3-c]phenazines under solvent-free conditions

RSC Advances ◽  
2019 ◽  
Vol 9 (13) ◽  
pp. 7400-7410 ◽  
Author(s):  
Hossein Naeimi ◽  
Maryam Farahnak Zarabi
Keyword(s):  
Graphene Oxide ◽  
Green Synthesis ◽  
Acid Catalyst ◽  
Solvent Free ◽  
Reusable Catalyst ◽  
Hydroxyl Groups ◽  
Functionalized Graphene ◽  
Functionalized Graphene Oxide ◽  
Solvent Free Conditions ◽  
Hyperbranched Polyglycerol

A novel acid catalyst was prepared based on growing hyperbranched polyglycerol (HPG) on the surface of graphene oxide. Then, the hydroxyl groups of HPG on graphene oxide were functionalized by sulfonate groups to form an acid catalyst.

BINAP-copper supported by hydrotalcite as an efficient catalyst for the borrowing hydrogen reaction and dehydrogenation cyclization under water or solvent-free conditions

2018 ◽  
Vol 20 (11) ◽  
pp. 2571-2577 ◽  
Author(s):  
Zhaojun Xu ◽  
Xiaoli Yu ◽  
Xinxin Sang ◽  
Dawei Wang
Keyword(s):  
Solvent Free ◽  
Efficient Catalyst ◽  
Highly Efficient ◽  
Solvent Free Conditions ◽  
Borrowing Hydrogen

A BINAP-Cu system supported by hydrotalcite has been developed and proved to be a highly efficient catalyst for the atom-efficient and green borrowing hydrogen reaction and dehydrogenative cyclization.

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