ChemInform Abstract: Regioselectivity in the Ring Opening of Epoxides: A Metal-Free Cascade C-S/C-O Bond Formation Approach to 1,3-Oxathiolan-2-ylidenes Through Heteroannulation of α-Enolic Dithioesters at Room Temperature.

ChemInform ◽  
2014 ◽  
Vol 45 (51) ◽  
pp. no-no
Author(s):  
Gaurav Shukla ◽  
Anugula Nagaraju ◽  
Abhijeet Srivastava ◽  
Girijesh Kumar Verma ◽  
Keshav Raghuvanshi ◽  
...  
Keyword(s):  
Ring Opening ◽  
Room Temperature ◽  
Bond Formation ◽  
Metal Free ◽  
Ring Opening Of Epoxides

Solid lithium perchlorate as a powerful catalyst for the synthesis of β-aminoalcohols under solvent-free conditions

2005 ◽  
Vol 83 (5) ◽  
pp. 505-507 ◽  
Author(s):  
Najmodin Azizi ◽  
Mohammad R Saidi
Keyword(s):  
Ring Opening ◽  
Room Temperature ◽  
Lithium Perchlorate ◽  
Solvent Free ◽  
Solvent Free Conditions ◽  
Reaction Proceeds ◽  
Ring Opening Of Epoxides ◽  
Neutral Conditions ◽  
Hindered Amines ◽  
Short Times

Lithium perchlorate catalyzed the ring opening of epoxides with amines to provide the corresponding β-aminoalcohols in excellent yields with high regioselectivity. The reaction proceeds rapidly under mild and neutral conditions and worked well with primary, secondary, aliphatic, aromatic, and hindered amines in short times at room temperature, in the absence of solvent.Key words: epoxide, lithium perchlorate, β-aminoalcohols, solvent-free.

Room Temperature, Metal-Free, Regio-Selective Arylselenation of Anilines Using Diselenides as Selenium Source

Synthesis ◽  
2022 ◽  
Author(s):  
Rekha Bai ◽  
Kamlesh Kumar Dabaria ◽  
Satpal Singh Badsara
Keyword(s):  
Ambient Temperature ◽  
Room Temperature ◽  
Bond Formation ◽  
Metal Free ◽  
Aniline Derivatives

A metal-free direct C-H selenation of aniline derivatives via an iodine catalysed C-Se bond formation using diselenides as a selenium source at ambient temperature is described. A variety of aniline derivatives underwent regio-selective C-H selenation with different diselenides to afford the corresponding aryl selenoethers in good to excellent yields.

ChemInform Abstract: Graphene Oxide as an Acid Catalyst for the Room Temperature Ring Opening of Epoxides.

ChemInform ◽  
2012 ◽  
Vol 43 (40) ◽  
pp. no-no
Author(s):  
Amarajothi Dhakshinamoorthy ◽  
Mercedes Alvaro ◽  
Patricia Concepcion ◽  
Vicente Fornes ◽  
Hermenegildo Garcia
Keyword(s):  
Graphene Oxide ◽  
Ring Opening ◽  
Room Temperature ◽  
Acid Catalyst ◽  
Ring Opening Of Epoxides
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