scholarly journals Rapid and catalyst free synthesis of new bis(benzo[g]chromene) and bis(pyrano[3,2-c]chromene) derivatives and optimization of reaction conditions using response surface methodology

RSC Advances ◽  
2019 ◽  
Vol 9 (67) ◽  
pp. 39466-39474
Author(s):  
Fahimeh Sadat Hosseini ◽  
Mohammad Bayat ◽  
Milad Afsharnezhad
Keyword(s):  
Response Surface Methodology ◽  
Optical Properties ◽  
Liquid Crystals ◽  
Response Surface ◽  
Building Blocks ◽  
Reaction Conditions ◽  
One Pot ◽  
Catalyst Free ◽  
One Pot Synthesis

One-pot synthesis of C2-symmetric chromene derivatives, which serve as building blocks to prepare liquid crystals with potential electrical or optical properties.

Novel One-pot Synthesis of Pyranocarbazole Derivatives via an Isocyanide-based Three-component Reaction

2020 ◽  
Vol 17 ◽  
Author(s):  
Visarapu Malathi ◽  
Pedavenkatagari Narayana Reddy ◽  
Pannala Padmaja
Keyword(s):  
Efficient Method ◽  
Atom Economy ◽  
Reaction Conditions ◽  
One Pot ◽  
Catalyst Free ◽  
One Pot Synthesis ◽  
Three Component Reaction ◽  
High Yields

Abstract:: An efficient method has been developed for the synthesis of new pyrano[3,2-c] and pyrano[3,2-a]carbazole de-rivatives via a three component reaction of 4-hydroxycarbazole or 2-hydroxycarbazole, isocyanides, and dialkylacetylenedi-carboxylates. Noteworthy features of this protocol include mild reaction conditions, catalyst-free, high atom-economy and high yields.

scholarly journals A novel three-component reaction between isocyanides, alcohols or thiols and elemental sulfur: a mild, catalyst-free approach towards O-thiocarbamates and dithiocarbamates

2019 ◽  
Vol 15 ◽  
pp. 1523-1533 ◽  
Author(s):  
András György Németh ◽  
György Miklós Keserű ◽  
Péter Ábrányi-Balogh
Keyword(s):  
Elemental Sulfur ◽  
Building Blocks ◽  
Reaction Conditions ◽  
One Pot ◽  
Catalyst Free ◽  
Synthetic Procedure ◽  
Three Component Reaction ◽  
Wide Range ◽  
Organic Chemist ◽  
The One

A new multicomponent reaction has been developed between isocyanides, sulfur and alcohols or thiols under mild reaction conditions to afford O-thiocarbamates and dithiocarbamates in moderate to good yields. The one-pot reaction cascade involves the formation of an isothiocyanate intermediate, thus a catalyst-free synthesis of isothiocyanates, as valuable building blocks from isocyanides and sulfur is proposed, as well. The synthetic procedure suits the demand of a modern organic chemist, as it tolerates a wide range of functional groups, it is atom economic and easily scalable.

One-pot synthesis of biodiesel from high FFA shea butter in an optimisation study using response surface methodology

Biofuels ◽  
2018 ◽  
pp. 1-8 ◽  
Author(s):  
E. O. Ajala ◽  
A. M. Olaniyan ◽  
F. Aberuagba ◽  
M. A. Ajala ◽  
M. M. Odewole
Keyword(s):  
Response Surface Methodology ◽  
Response Surface ◽  
Shea Butter ◽  
One Pot ◽  
One Pot Synthesis

scholarly journals Simple synthesis of new imidazopyridinone, pyridopyrimidinone, and thiazolopyridinone derivatives and optimization of reaction parameters using response surface methodology

RSC Advances ◽  
2019 ◽  
Vol 9 (52) ◽  
pp. 30479-30488 ◽  
Author(s):  
Fahimeh Sadat Hosseini ◽  
Mohammad Bayat
Keyword(s):  
Response Surface Methodology ◽  
Response Surface ◽  
Response Surface Method ◽  
Aromatic Aldehydes ◽  
Simple Synthesis ◽  
Reaction Parameters ◽  
Reaction Conditions ◽  
One Pot ◽  
Surface Method ◽  
The One

The one-pot reaction of various diamines with cysteamine hydrochloride or 1,1-bis(methylthio)-2-nitroethene, aromatic aldehydes, and Meldrum's acid led to pyridone compounds in good yields. The reaction conditions were optimized using response surface method.

scholarly journals Highly Efficient and Eco-Friendly One-Pot Synthesis of Penta Substitute Pyrrole Derivatives under Catalyst-Free Conditions

2014 ◽  
Vol 30 ◽  
pp. 257-264 ◽  
Author(s):  
Denish J. Viradiya ◽  
Bharat H. Baria ◽  
Rajesh Kakadiya ◽  
Vipul C. Kotadiya ◽  
Anamik Shah
Keyword(s):  
Present Method ◽  
Environmentally Friendly ◽  
Reaction Conditions ◽  
One Pot ◽  
Pyrrole Derivatives ◽  
Experimental Procedure ◽  
Catalyst Free ◽  
One Pot Synthesis ◽  
Short Period ◽  
Purification Methods

An eco-friendly and efficient one-pot synthesis of penta-substituted pyrrole derivatives via a four-component reaction of maldrum’s acid, arylglyoxal monohydrate, dimethyl but-2-yne-dioate and amines under catalyst-free conditions in an environmentally friendly medium is described. The simple experimental procedure, catalyst-free reaction conditions, short period of conversion, and excellent yields are the advantages of the present method. Good chemical yields have been achieved without the need for chromatography and recrystallization or other purification methods.

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