Lewis Acid Mediated Tandem Reaction of Propargylic Alcohols to Tetrazoles Involving CO- and CC-Bond Cleavage Reactions and a CN-Bond Formation

2014 ◽  
Vol 20 (38) ◽  
pp. 12046-12050 ◽  
Author(s):  
Xian-Rong Song ◽  
Ya-Ping Han ◽  
Yi-Feng Qiu ◽  
Zi-Hang Qiu ◽  
Xue-Yuan Liu ◽  
...  
Keyword(s):  
Lewis Acid ◽  
Bond Cleavage ◽  
Bond Formation ◽  
Tandem Reaction ◽  
Propargylic Alcohols ◽  
Cleavage Reactions

ChemInform Abstract: Lewis Acid Mediated Tandem Reaction of Propargylic Alcohols to Tetrazoles Involving C-O- and C-C-Bond Cleavage Reactions and a C-N-Bond Formation.

ChemInform ◽  
2015 ◽  
Vol 46 (11) ◽  
pp. no-no
Author(s):  
Xian-Rong Song ◽  
Ya-Ping Han ◽  
Yi-Feng Qiu ◽  
Zi-Hang Qiu ◽  
Xue-Yuan Liu ◽  
...  
Keyword(s):  
Lewis Acid ◽  
Bond Cleavage ◽  
Bond Formation ◽  
Tandem Reaction ◽  
Propargylic Alcohols ◽  
Cleavage Reactions

Lewis Acid Mediated Tandem Reaction of Propargylic Alcohols with Hydroxylamine Hydrochloride To Give α,β-Unsaturated Amides and Alkenyl Nitriles

2015 ◽  
Vol 80 (18) ◽  
pp. 9200-9207 ◽  
Author(s):  
Ya-Ping Han ◽  
Xian-Rong Song ◽  
Yi-Feng Qiu ◽  
Xin-Hua Hao ◽  
Jia Wang ◽  
...  
Keyword(s):  
Lewis Acid ◽  
Hydroxylamine Hydrochloride ◽  
Tandem Reaction ◽  
Propargylic Alcohols

Metal free access to quinolines via C–C bond cleavage of styrenes

2015 ◽  
Vol 2 (5) ◽  
pp. 515-519 ◽  
Author(s):  
Ramesh Deshidi ◽  
Shekaraiah Devari ◽  
Bhahwal Ali Shah
Keyword(s):  
Bond Cleavage ◽  
Bond Formation ◽  
Tandem Reaction ◽  
Free Access ◽  
Metal Free

A new metal free self-sorting tandem reaction between styrenes and anilines to access 2,4-disubstituted quinolines, involving simultaneous C–C and C–N bond formation along with a C–C bond cleavage, has been developed.

Hydrogenation-dehydrogenation and cleavage functions of hydrorefining catalysts studied by the reaction of tetrahydrothiophene

1986 ◽  
Vol 51 (12) ◽  
pp. 2770-2780 ◽  
Author(s):  
Alexandra Drahorádová ◽  
Miroslav Zdražil
Keyword(s):  
Activated Carbon ◽  
Catalyst Surface ◽  
Bond Cleavage ◽  
Unsaturated Hydrocarbons ◽  
Cleavage Reactions

The reaction of tetrahydrothiophene in a stream of nitrogen was used to study the relations between dehydrogenation and C-S cleavage reactions on sulphided Co-Mo/Al2O3 catalysts. The course of the reaction was compared for Co-Mo catalysts supported on alumina and activated carbon, for alumina alone as well as for a Pt/C catalyst. The effect of substitution of nitrogen for hydrogen, of the addition of water to the feed, of pre-sulphidation of catalysts and their deactivation by coking on the rate and selectivity of the reaction were also investigated. The results showed that hydrogenation-dehydrogenation and dehydrosulphurization activity of the sulphide catalysts have the same origin. Hydrogen accelerates dehydrosulphurization on the sulphide catalysts by removing sulphur and unsaturated hydrocarbons formed on catalyst surface by C-S bond cleavage reactions.

scholarly journals Lewis acid / Base-free Strategy for the Synthesis of 2-Arylthio and Selenyl Benzothiazole / Thiazole and Imidazole

2021 ◽  
Vol 27 (1) ◽  
pp. 17-23
Author(s):  
Guniganti Balakishan ◽  
Gullapalli Kumaraswamy ◽  
Vykunthapu Narayanarao ◽  
Pagilla Shankaraiah
Keyword(s):  
Lewis Acid ◽  
Bond Formation ◽  
Acid Base ◽  
Mechanistic Pathway ◽  
Wide Range ◽  
Acid And Base ◽  
Lewis Acid And Base ◽  
Sulfur Bond

Abstract A Cu(II)-catalyzed Csp2-Se and Csp2-Sulfur bond formation was achieved with moderate to good yields without the aid of Lewis acid and base. The reaction is compatible with a wide range of heterocycles such as benzothiazole, thiazole, and imidazole. Also, this typical protocol is found to be active in thio-selenation via S-H activation. Additionally, we proposed a plausible mechanistic pathway involving Cu(III) putative intermediate.

A BF3·Et2O catalyzed atom-economical approach to highly substituted indole-3-carbinols from nitrosobenzenes and propargylic alcohols

2018 ◽  
Vol 16 (5) ◽  
pp. 756-764 ◽  
Author(s):  
Sengodagounder Muthusamy ◽  
Alagesan Balasubramani ◽  
Eringathodi Suresh
Keyword(s):  
Tandem Reaction ◽  
Propargylic Alcohols

The BF3·Et2O catalyzed tandem reaction of nitrosobenzenes and propargylic alcohols for the formation of highly substituted indole-3-carbinols.

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