Metal-free oxidative decarbonylative coupling of aromatic aldehydes with arenes: direct access to biaryls

2015 ◽  
Vol 51 (27) ◽  
pp. 5925-5928 ◽  
Author(s):  
Ren-Jin Tang ◽  
Qing He ◽  
Luo Yang
Keyword(s):  
Aromatic Aldehydes ◽  
Direct Access ◽  
Metal Free ◽  
First Time ◽  
Biaryl Compounds

A metal-free oxidative decarbonylative coupling of aromatic aldehydes with electron-rich or electron-deficient arenes to produce biaryl compounds was developed for the first time.

Metal-free enantioselective addition of nucleophilic silicon to aromatic aldehydes catalyzed by a [2.2]paracyclophane-based N-heterocyclic carbene catalyst

2017 ◽  
Vol 15 (15) ◽  
pp. 3202-3206 ◽  
Author(s):  
Ping An ◽  
Yuwen Huo ◽  
Zhen Chen ◽  
Chun Song ◽  
Yudao Ma
Keyword(s):  
Transition Metal ◽  
Aromatic Aldehydes ◽  
Metal Free ◽  
Enantioselective Addition ◽  
First Time

A transition metal-free enantioselective 1,2-silylation of aromatic aldehydes to yield chiral α-hydroxysilanes was developed for the first time.

scholarly journals Versatile precursor dependent copper sulfide nanoparticles as multifunctional catalyst for photocatalytic removal of water pollutants and synthesis of aromatic aldehydes and NH-triazoles

2021 ◽  
Author(s):  
Soniya Agarwal ◽  
Parmita Phukan ◽  
Diganta Sarma ◽  
Kalyanjyoti Deori
Keyword(s):  
Copper Sulfide ◽  
Aromatic Aldehydes ◽  
Water Pollutants ◽  
Photocatalytic Removal ◽  
Multifunctional Catalyst ◽  
First Time

A series of copper sulfide (CS) nanoparticles (NPs) were synthesized just by varying the amount of sulfur precursor and have been explored for the first time as a three way...

Synthesis of 2-Aryl-5-alkyl-fulleropyrrolidines: Metal-Free-Mediated Reaction of [60]Fullerene with Aromatic Aldehydes and Inactive Primary Amines

2017 ◽  
Vol 82 (16) ◽  
pp. 8617-8627 ◽  
Author(s):  
Meng Zhang ◽  
Hui-Juan Wang ◽  
Fa-Bao Li ◽  
Xin-Xin Zhong ◽  
Yong-Shun Huang ◽  
...  
Keyword(s):  
Aromatic Aldehydes ◽  
Primary Amines ◽  
Metal Free

Pt NPs@GO as a highly efficient and reusable catalyst for one-pot synthesis of acridinedione derivatives

RSC Advances ◽  
2015 ◽  
Vol 5 (61) ◽  
pp. 49295-49300 ◽  
Author(s):  
Handan Pamuk ◽  
Burak Aday ◽  
Fatih Şen ◽  
Muharrem Kaya
Keyword(s):  
Aromatic Aldehydes ◽  
Reusable Catalyst ◽  
One Pot ◽  
Highly Efficient ◽  
One Pot Synthesis ◽  
First Time

Pt NPs@GO has been used for the first time for synthesizing acridinedione from dimedone, aromatic aldehydes and various amines as a catalyst.

scholarly journals Metal-Free Oxidative Dimerization of Dithiocarbamates: Direct Access to 3,5-Bis-mercapto-1,2,4-thiadiazoles

SynOpen ◽  
2017 ◽  
Vol 01 (01) ◽  
pp. 0138-0142 ◽  
Author(s):  
Azim Halimehjani ◽  
Yazdanbakhsh Nosood ◽  
Shaghayegh Didaran ◽  
Fezzeh Aryanasab
Keyword(s):  
Periodic Acid ◽  
Reaction Times ◽  
Direct Access ◽  
Oxidative Dimerization ◽  
Metal Free

A facile and efficient protocol for the synthesis of 3,5-bis-mercapto-1,2,4-thiadiazoles by the oxidative dimerization of S-alkyl dithiocarbamates using periodic acid as an inexpensive and commercially available oxidant is reported. High to excellent yields and short reaction times are the main advantages of this procedure.

Brønsted Acid-Catalyzed Solvent-Controlled Regioselective Hydrothiolation and Diastereoselective Cascade Cyclization of Dienes

2021 ◽  
Author(s):  
Kai Ji ◽  
Ka Lu ◽  
Jie Huang ◽  
Zi-Hao Li ◽  
Tong-Mei Ding ◽  
...  
Keyword(s):  
Free Atom ◽  
Bronsted Acid ◽  
Brønsted Acid ◽  
Metal Free ◽  
Cascade Cyclization ◽  
Brönsted Acid ◽  
Acid Catalyzed ◽  
First Time

A highly regio- and diastereo-selective Brønsted acid-catalyzed tandem hydrothiolation/Friedel-Crafts reaction of linear 1,3-dienes has been developed for the first time, which provides a metal-free, atom-economic and concise way of constructing...

scholarly journals A practical way to synthesize chiral fluoro-containing polyhydro-2H-chromenes from monoterpenoids

2016 ◽  
Vol 12 ◽  
pp. 648-653 ◽  
Author(s):  
Oksana S Mikhalchenko ◽  
Dina V Korchagina ◽  
Konstantin P Volcho ◽  
Nariman F Salakhutdinov
Keyword(s):  
Aromatic Aldehydes ◽  
Single Step ◽  
Preparative Synthesis ◽  
Aliphatic Aldehydes ◽  
First Time

Conditions enabling the single-step preparative synthesis of chiral 4-fluoropolyhydro-2H-chromenes in good yields through a reaction between monoterpenoid alcohols with para-menthane skeleton and aldehydes were developed for the first time. The BF3·Et2O/H2O system is used both as a catalyst and as a fluorine source. The reaction can involve aliphatic aldehydes as well as aromatic aldehydes containing various acceptor and donor substituents. 4-Hydroxyhexahydro-2H-chromenes were demonstrated to be capable of converting to 4-fluorohexahydro-2H-chromenes under the developed conditions, the reaction occurs with inversion of configuration.

Metal-Free Reagent Dependent SS and CC Homocoupling of α-Enolic Dithioesters at Room Temperature: Direct Access to Fully Substituted Symmetrical ThiophenesviaChemoselective Paal-Knorr Approach

2015 ◽  
Vol 357 (2-3) ◽  
pp. 530-538 ◽  
Author(s):  
B. Janaki Ramulu ◽  
Anugula Nagaraju ◽  
Sushobhan Chowdhury ◽  
Suvajit Koley ◽  
Maya Shankar Singh
Keyword(s):  
Room Temperature ◽  
Direct Access ◽  
Metal Free

Black phosphorus as a metal-free, visible-light-active heterogeneous photoredox catalyst for the direct C–H arylation of heteroarenes

2020 ◽  
Vol 56 (44) ◽  
pp. 5901-5904 ◽  
Author(s):  
Erbay Kalay ◽  
Hüseyin Küçükkeçeci ◽  
Haydar Kilic ◽  
Önder Metin
Keyword(s):  
Visible Light ◽  
Black Phosphorus ◽  
Diazonium Salts ◽  
Metal Free ◽  
Visible Light Active ◽  
First Time

We report for the first time the employment of black phosphorus (BP) as a metal free, visible-light-active and reusable heterogeneous photoredox catalyst for the direct C–H arylation of heteroarenes (furan and thiophene) with aryl diazonium salts.

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