Metal-Free One-Pot Four-Component Cascade Annulation in Ionic Liquids at Room Temperature: Convergent Access to Thiazoloquinolinone Derivatives

2018 ◽  
Vol 83 (15) ◽  
pp. 7950-7961 ◽  
Author(s):  
Anshu Singh ◽  
Abhijeet Srivastava ◽  
Maya Shankar Singh
Keyword(s):  
Ionic Liquids ◽  
Room Temperature ◽  
One Pot ◽  
Metal Free

Efficient Synthesis of Ellagic Acid Salts Using Distillable Ionic Liquids

2011 ◽  
Vol 64 (12) ◽  
pp. 1624 ◽  
Author(s):  
Shahana A. Chowdhury ◽  
Pamela M. Dean ◽  
R. Vijayaraghavan ◽  
D. R. MacFarlane
Keyword(s):  
Ionic Liquid ◽  
Ionic Liquids ◽  
Ellagic Acid ◽  
Room Temperature ◽  
Acid Salt ◽  
Ethyl Gallate ◽  
Efficient Synthesis ◽  
One Pot ◽  
One Pot Synthesis ◽  
Acid Salts

A direct, one pot synthesis of an ellagic acid salt was achieved at room temperature by dimerization of ethyl gallate using N,N-dimethylammonium N′,N′-dimethylcarbamate, a distillable ionic liquid, as solvent.

scholarly journals Metal free synthesis of ethylene and propylene carbonate from alkylene halohydrin and CO2 at room temperature

RSC Advances ◽  
2019 ◽  
Vol 9 (58) ◽  
pp. 34023-34031
Author(s):  
Santosh Govind Khokarale ◽  
Jyri-Pekka Mikkola
Keyword(s):  
Propylene Carbonate ◽  
Room Temperature ◽  
Cyclic Carbonates ◽  
One Pot ◽  
Metal Free

Metal free, one-pot and room temperature syntheses of the industrially important cyclic carbonates such as ethylene and propylene carbonate were performed from alkylene halohydrins and CO2.

scholarly journals One-Pot, Metal-Free Synthesis of Dimethyl Carbonate from CO2 at Room Temperature

2020 ◽  
Vol 1 (3) ◽  
pp. 298-314
Author(s):  
Santosh Govind Khokarale ◽  
Thai Q. Bui ◽  
Jyri-Pekka Mikkola
Keyword(s):  
Ionic Liquid ◽  
Room Temperature ◽  
Dimethyl Carbonate ◽  
High Selectivity ◽  
Chemical Species ◽  
Side Reactions ◽  
Ambient Conditions ◽  
Reaction Conditions ◽  
One Pot ◽  
Metal Free

Herein, we report on the metal-free, one-pot synthesis of industrially important dimethyl carbonate (DMC) from molecular CO2 under ambient conditions. In this process, initially the CO2 was chemisorbed through the formation of a switchable ionic liquid (SIL), [DBUH] [CH3CO3], by the interaction of CO2 with an equivalent mixture of organic superbase 1,8-diazabicyclo-[5.4.0]-undec-7-ene (DBU) and methanol. The obtained SIL further reacted with methyl iodide (CH3I) to form DMC. The synthesis was carried out in both dimethyl sulfoxide (DMSO) and methanol. Methanol is preferred, as it not only served as a reagent and solvent in CO2 capture and DMC synthesis, but it also assisted in controlling the side reactions between chemical species such as CH3I and [DBUH]+ cation and increased the yield of DMC. Hence, the use of methanol avoided the loss of captured CO2 and favored the formation of DMC with high selectivity. Under the applied reaction conditions, 89% of the captured CO2 was converted to DMC. DBU was obtained, achieving 86% recovery of its salts formed during the synthesis. Most importantly, in this report we describe a simple and renewable solvent-based process for a metal-free approach to DMC synthesis under industrially feasible reaction conditions.

ChemInform Abstract: Metal-Free, One-Pot, Rapid Synthesis of Tetrahydropyridines Using Acetic Acid as Solvent and Catalyst at Room Temperature

ChemInform ◽  
2014 ◽  
Vol 45 (33) ◽  
pp. no-no
Author(s):  
Umamahesh Balijapalli ◽  
Sathishkumar Munusamy ◽  
Karthikeyan Natesan Sundaramoorthy ◽  
Sathiyanarayanan Kulathu Iyer
Keyword(s):  
Acetic Acid ◽  
Room Temperature ◽  
Rapid Synthesis ◽  
One Pot ◽  
Metal Free

scholarly journals Metal-Free, One-Pot, Rapid Synthesis of Tetrahydropyridines Using Acetic Acid as Solvent and Catalyst at Room Temperature

2014 ◽  
Vol 44 (7) ◽  
pp. 943-953 ◽  
Author(s):  
Umamahesh Balijapalli ◽  
Sathishkumar Munusamy ◽  
Karthikeyan Natesan Sundaramoorthy ◽  
Sathiyanarayanan Kulathu Iyer
Keyword(s):  
Acetic Acid ◽  
Room Temperature ◽  
Rapid Synthesis ◽  
One Pot ◽  
Metal Free

Synthesis of 6-Thiocyanatophenanthridines by Visible-Light- and Air-Promoted Radical Thiocyanation of 2-Isocyanobiphenyls

Synlett ◽  
2017 ◽  
Vol 29 (02) ◽  
pp. 176-180 ◽  
Author(s):  
Manjula Singh ◽  
Arvind Yadav ◽  
Lal Yadav ◽  
R. Singh
Keyword(s):  
Natural Resources ◽  
Visible Light ◽  
Room Temperature ◽  
Atmospheric Oxygen ◽  
Ammonium Thiocyanate ◽  
Radical Cyclization ◽  
Eosin Y ◽  
One Pot ◽  
Metal Free

A convenient, efficient, and metal-free synthesis of 6-thiocyanatophenanthridines by visible-light- and air-mediated, eosin Y-catalyzed, sequential radical cyclization and aromatization of 2-isocyanobiphenyls with ammonium thiocyanate is reported. Advantageously, the protocol utilizes inexpensive, clean, and sustainable natural resources such as visible light and atmospheric oxygen at room temperature in a one-pot procedure.

One-pot Suzuki coupling of aromatic amines via visible light photocatalyzed metal free borylation using t-BuONO at room temperature

2016 ◽  
Vol 57 (14) ◽  
pp. 1551-1554 ◽  
Author(s):  
Sabir Ahammed ◽  
Shiny Nandi ◽  
Debasish Kundu ◽  
Brindaban C. Ranu
Keyword(s):  
Visible Light ◽  
Aromatic Amines ◽  
Room Temperature ◽  
Suzuki Coupling ◽  
One Pot ◽  
Metal Free

H-phosphonate-mediated sulfonylation of heteroaromatic N-oxides: a mild and metal-free one-pot synthesis of 2-sulfonyl quinolines/pyridines

2015 ◽  
Vol 51 (60) ◽  
pp. 12111-12114 ◽  
Author(s):  
Kai Sun ◽  
Xiao-Lan Chen ◽  
Xu Li ◽  
Ling-Bo Qu ◽  
Wen-Zhu Bi ◽  
...  
Keyword(s):  
Room Temperature ◽  
One Pot ◽  
Metal Free ◽  
One Pot Synthesis ◽  
Synthetic Strategy

A smart H-phosphonate-mediated synthetic strategy for the sulfonylation of heteroaromatic N-oxides has been developed in one pot under metal-free conditions at room temperature.

scholarly journals Highly Efficient Recyclable Sol Gel Polymer Catalyzed One Pot Difunctionalization of Alkynes

Molecules ◽  
2018 ◽  
Vol 23 (8) ◽  
pp. 1879
Author(s):  
Justin Domena ◽  
Carlos Chong ◽  
Qiaxian Johnson ◽  
Bhanu Chauhan ◽  
Yalan Xing
Keyword(s):  
Reaction Time ◽  
Room Temperature ◽  
Functional Group ◽  
Sol Gel ◽  
One Pot ◽  
Short Reaction Time ◽  
Metal Free ◽  
Highly Efficient

Amino-bridged gel polymer P1 was discovered to catalyze alkyne halo-functionalization in excellent yields, regioselectivity, functional group compatibility, and recyclability. We have observed that both aromatic and aliphatic alkynes can be converted to α,α-dihalogenated ketones in the presence of polymer P1 under metal-free conditions at room temperature within a short reaction time.

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