Iodine-mediated synthesis of (E)-vinyl sulfones from sodium sulfinates and cinnamic acids in aqueous medium

RSC Advances ◽  
2015 ◽  
Vol 5 (82) ◽  
pp. 66723-66726 ◽  
Author(s):  
Jian Gao ◽  
Junyi Lai ◽  
Gaoqing Yuan
Keyword(s):  
Transition Metal ◽  
Aqueous Medium ◽  
Efficient Method ◽  
Metal Catalysts ◽  
Transition Metal Catalysts ◽  
Cinnamic Acids ◽  
Highly Efficient

A green and highly efficient method for the synthesis of (E)-vinyl sulfones promoted by iodine in water has been developed, without transition metal catalysts and ligands.

Iodine-induced synthesis of sulfonate esters from sodium sulfinates and phenols under mild conditions

RSC Advances ◽  
2015 ◽  
Vol 5 (35) ◽  
pp. 27439-27442 ◽  
Author(s):  
Jian Gao ◽  
Xiaojun Pan ◽  
Juan Liu ◽  
Junyi Lai ◽  
Liming Chang ◽  
...  
Keyword(s):  
Transition Metal ◽  
Efficient Method ◽  
Room Temperature ◽  
Metal Catalysts ◽  
Transition Metal Catalysts ◽  
Mild Conditions ◽  
Highly Efficient

A facile and highly efficient method for the synthesis of sulfonate esters mediated by iodine at room temperature has been developed, without transition metal catalysts and oxidants.

Eco-friendly electrocatalytic oxidation of alcohols on a novel electro generated TEMPO-functionalized MCM-41 modified electrode

2015 ◽  
Vol 17 (2) ◽  
pp. 991-1000 ◽  
Author(s):  
Babak Karimi ◽  
Mohammad Rafiee ◽  
Saber Alizadeh ◽  
Hojatollah Vali
Keyword(s):  
Transition Metal ◽  
Selective Oxidation ◽  
Modified Electrode ◽  
Electrocatalytic Oxidation ◽  
Metal Catalysts ◽  
Transition Metal Catalysts ◽  
Free System ◽  
Highly Efficient ◽  
Oxidation Of Alcohols ◽  
Mcm 41

The development of a highly efficient and waste-free system for the selective oxidation of alcohols without using expensive transition metal catalysts using a novel electrogenerated TEMPO-functionalized MCM-41 modified electrode is described.

Synthesis of spiroketals by iridium-catalyzed double hydroalkoxylation

2006 ◽  
Vol 78 (2) ◽  
pp. 385-390 ◽  
Author(s):  
Barbara A. Messerle ◽  
Khuong Q. Vuong
Keyword(s):  
Transition Metal ◽  
Benzyl Alcohol ◽  
Metal Catalysts ◽  
Transition Metal Catalysts ◽  
Iridium Complex ◽  
Effective Catalyst ◽  
Efficient Approach ◽  
Highly Efficient

A highly efficient approach to the synthesis of spiroketals involves the double cyclization of alkynyl diols using transition-metal catalysts. The iridium complex [Ir(PyP)(CO)2]BPh4 where PyP = 1-[(2-diphenylphosphino)ethyl]pyrazole is an effective catalyst for promoting the formation of spiroketals via this double hydroalkoxylation reaction. The complex promotes the formation of a series of spiroketal products from alkynyl diol starting materials such as 3-ethynylpentane-1,5-diol and 2-(4-hydroxybut-1-ynyl)benzyl alcohol. Stereoselective cyclization occurs for 3-ethynylpentane-1,5-diol, 3-ethynylhexane-1,6-diol. The cycloadditions occur in all but one case with quantitative conversion in under 24 h at 120 °C.

Transition-metal-free direct perfluoroalkylation of quinoline amides at C5 position through radical cross-coupling under mild conditions

2017 ◽  
Vol 4 (6) ◽  
pp. 1116-1120 ◽  
Author(s):  
Jun Xu ◽  
Li Qiao ◽  
Beibei Ying ◽  
Xiaolei Zhu ◽  
Chao Shen ◽  
...  
Keyword(s):  
Transition Metal ◽  
Efficient Method ◽  
Cross Coupling ◽  
Metal Catalysts ◽  
Transition Metal Catalysts ◽  
Low Energy ◽  
Metal Free ◽  
Mild Conditions

A simple low-energy and efficient method is established for the synthesis of C5-selective perfluoroalkylation quinolines in the absence of any transition metal catalysts.

scholarly journals TBHP-mediated highly efficient dehydrogenative cross-oxidative coupling of methylarenes with acetanilides

2016 ◽  
Vol 12 ◽  
pp. 2250-2255 ◽  
Author(s):  
Cui Chen ◽  
Weibing Liu ◽  
Peng Zhou
Keyword(s):  
Transition Metal ◽  
Organic Solvents ◽  
Oxidative Coupling ◽  
Cross Coupling ◽  
Metal Catalysts ◽  
Transition Metal Catalysts ◽  
Coupling Method ◽  
Highly Efficient ◽  
Coupling Approach

A TBHP-mediated dehydrogenative cross-oxidative-coupling approach has been developed for the synthesis of N-arylbenzamides from methylarenes and acetanilides. This cross-coupling method is free of transition metal catalysts and ligands, and no extra organic solvents are required, which make it an useful and attractive strategy for the straightforward construction of C–N bonds. Besides, this conversion is an important complement to the conventional C–N forming strategies.

Synthesis of sulfonamides via I2-mediated reaction of sodium sulfinates with amines in an aqueous medium at room temperature

2015 ◽  
Vol 17 (3) ◽  
pp. 1400-1403 ◽  
Author(s):  
Xiaojun Pan ◽  
Jian Gao ◽  
Juan Liu ◽  
Junyi Lai ◽  
Huanfeng Jiang ◽  
...  
Keyword(s):  
Transition Metal ◽  
Aqueous Medium ◽  
Room Temperature ◽  
Metal Catalysts ◽  
Transition Metal Catalysts ◽  
Synthetic Route

A convenient and green synthetic route has been developed to synthesize sulfonamides in an aqueous medium at room temperature, without the use of transition metal catalysts and oxidants.

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