Unsymmetrical 1,1-diborated multisubstituted sp3-carbons formed via a metal-free concerted-asynchronous mechanism

2015 ◽  
Vol 13 (37) ◽  
pp. 9659-9664 ◽  
Author(s):  
Ana B. Cuenca ◽  
Jessica Cid ◽  
Diego García-López ◽  
Jorge J. Carbó ◽  
Elena Fernández
Keyword(s):  
Transition Metal ◽  
Metal Complex ◽  
Transition Metal Complex ◽  
Diazo Compounds ◽  
Cyclic Ketones ◽  
Metal Free

We have experimentally proved and computationally rationalized the unsymmetrical 1,1-diboration of diazo compounds, formed in situ from aldehydes and cyclic and non-cyclic ketones, in the absence of any transition metal complex.

Diastereoselective synthesis of spiro[cyclopropane-1,3′-indolin]-2′-ones through metal-free cyclopropanation using tosylhydrazone salts

RSC Advances ◽  
2014 ◽  
Vol 4 (72) ◽  
pp. 38425-38432 ◽  
Author(s):  
Jeevak Sopanrao Kapure ◽  
Chada Narsimha Reddy ◽  
Praveen Reddy Adiyala ◽  
Ranjita Nayak ◽  
V. Lakshma Nayak ◽  
...  
Keyword(s):  
Transition Metal ◽  
Diazo Compounds ◽  
Diastereoselective Synthesis ◽  
Metal Free

Anticancer spiro[cyclopropane-1,3′-indolin]-2′-ones are accessible through a transition metal-free diastereoselective cyclopropanation using in situ generated diazo-compounds.

Transition-metal-free B–B and B–interelement reactions with organic molecules

2017 ◽  
Vol 46 (2) ◽  
pp. 415-430 ◽  
Author(s):  
Ana B. Cuenca ◽  
Ryosuke Shishido ◽  
Hajime Ito ◽  
Elena Fernández
Keyword(s):  
Transition Metal ◽  
Metal Complex ◽  
Organic Molecules ◽  
Transition Metal Complex ◽  
Metal Free ◽  
Guided Tour

This review is a guided tour along the activation modes and reactivity of B–B, B–Si, B–N, B–S, B–Se and B–P reagents, in the absence of any transition metal complex.

The genesis of a heterogeneous catalyst: in situ observation of a transition metal complex adsorbing onto an oxide surface in solution

2014 ◽  
Vol 50 (19) ◽  
pp. 2409-2411 ◽  
Author(s):  
Antoine Hervier ◽  
Juliette Blanchard ◽  
Guylène Costentin ◽  
John Regalbuto ◽  
Catherine Louis ◽  
...  
Keyword(s):  
Transition Metal ◽  
Metal Complex ◽  
Quartz Crystal ◽  
Transition Metal Complex ◽  
Oxide Surface ◽  
In Situ Observation ◽  
Complex Adsorption ◽  
Solid Liquid Interface ◽  
Solid Liquid

Transition metal complex adsorption onto an oxide surface was observed in situ using a quartz crystal microbalance at the solid–liquid interface.

Insertion Reaction of 2-Halo-N-allylanilines with K2S Involving Trisulfur Radical Anion: Synthesis of Benzothiazole Derivatives under Transition-Metal-Free Conditions

Synthesis ◽  
2020 ◽  
Author(s):  
Yan-Wei Zhao ◽  
Shun-Yi Wang ◽  
Xin-Yu Liu ◽  
Tian Jiang ◽  
Weidong Rao
Keyword(s):  
Transition Metal ◽  
Radical Anion ◽  
Radical Cyclization ◽  
Transition Metal Catalysis ◽  
Insertion Reaction ◽  
Metal Catalysis ◽  
Metal Free ◽  
Benzothiazole Derivatives

AbstractA synthesis of benzothiazole derivatives through the reaction of 2-halo-N-allylanilines with K2S in DMF is developed. The trisulfur radical anion S3·–, which is generated in situ from K2S in DMF, initiates the reaction without transition-metal catalysis or other additives. In addition, two C–S bonds are formed and heteroaromatization of benzothiazole is triggered by radical cyclization and H-shift.

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