Facile Access to 3,4-Disubstituted 2H-Chromenes via Domino [4+2] Annulation

Synthesis ◽  
2020 ◽  
Author(s):  
Sure Siva Prasad ◽  
Dirgha Raj Joshi ◽  
Ikyon Kim
Keyword(s):  
Lewis Acid ◽  
Triethyl Phosphite ◽  
Synthetic Route ◽  
One Pot ◽  
Highly Efficient ◽  
Three Component Coupling

AbstractA highly efficient synthetic route to polysubstituted 2H-chromenes was developed utilizing a domino O-alkylation/intramolecular Horner–Wadsworth–Emmons (HWE) olefination of diarylmethylphosphonates, which were readily accessed via Lewis acid mediated one-pot three-component coupling of aldehydes, phenols, and triethyl phosphite.

One-pot synthesis of carbazoles via tandem C–C cross-coupling and reductive amination

2016 ◽  
Vol 14 (1) ◽  
pp. 122-130 ◽  
Author(s):  
Deuk-Young Goo ◽  
Sang Kook Woo
Keyword(s):  
Natural Products ◽  
Reductive Amination ◽  
Bond Formation ◽  
Cross Coupling ◽  
Synthetic Route ◽  
One Pot ◽  
Highly Efficient ◽  
One Pot Synthesis ◽  
Synthetic Utility

We have developed a highly efficient synthetic route to carbazoles that employs sequential C–C/C–N bond formation via Suzuki cross-coupling and Cadogan cyclization. The developed method is compatible with electron neutral, rich or deficient substrates. The synthetic utility of this method was demonstrated by the concise syntheses of four natural products.

MnO2/TiO2 catalyzed synthesis of coenzyme pyridoxamine-5′-phosphate analogues: 3-deoxypyridoxamine-5′-phosphate

RSC Advances ◽  
2016 ◽  
Vol 6 (13) ◽  
pp. 10242-10248 ◽  
Author(s):  
Sk Jahir Abbas ◽  
P. V. R. K. Ramacharyulu ◽  
Shyue-Chu Ke
Keyword(s):  
Selective Oxidation ◽  
Vitamin B ◽  
Synthetic Route ◽  
One Pot ◽  
Highly Efficient ◽  
Supported Nanoparticles

The highly efficient-selective synthetic route of the pyridoxal-5′-phosphate (vitamin B6, PLP) analogues: C3 substituted deoxy derivatives were developed via reduction and followed by selective oxidation in one pot using solid supported nanoparticles.

Nickel-doped pyrrhotite iron sulfide nanosheets as a highly efficient electrocatalyst for water splitting

2020 ◽  
Vol 8 (39) ◽  
pp. 20323-20330
Author(s):  
Zhongxin Jing ◽  
Qingyun Zhao ◽  
Dehua Zheng ◽  
Lei Sun ◽  
Jiahui Geng ◽  
...  
Keyword(s):  
Hydrogen Evolution ◽  
Water Splitting ◽  
Oxygen Evolution ◽  
Hydrogen Evolution Reaction ◽  
Oxygen Evolution Reaction ◽  
Iron Sulfide ◽  
Synthetic Route ◽  
One Pot ◽  
Highly Efficient

We synthesized nickel-doped pyrrhotite iron sulfide nanosheets via a one-pot synthetic route, with great oxygen evolution reaction and hydrogen evolution reaction activities.

scholarly journals Gold-catalyzed three-component spirocyclization: a one-pot approach to functionalized pyrazolidines

2016 ◽  
Vol 14 (5) ◽  
pp. 1579-1583 ◽  
Author(s):  
Bernd Wagner ◽  
Wolf Hiller ◽  
Hiroaki Ohno ◽  
Norbert Krause
Keyword(s):  
One Pot ◽  
Highly Efficient ◽  
Three Component Coupling

From simple to complex: The highly efficient gold-catalyzed three-component coupling of an alkynol, a hydrazine and an aldehyde or ketone affords hitherto unknown spirocyclic pyrazolidines.

Synthetic route to chiral indolines via Cu(OAc)2-catalyzed ring-opening/C(sp2)–H activation of activated aziridines

2017 ◽  
Vol 53 (74) ◽  
pp. 10263-10266 ◽  
Author(s):  
Abhijit Mal ◽  
Gaurav Goswami ◽  
Imtiyaz Ahmad Wani ◽  
Manas K. Ghorai
Keyword(s):  
Lewis Acid ◽  
Ring Opening ◽  
Synthetic Route ◽  
One Pot ◽  
Acid Catalyzed

A novel synthetic route to functionalized indolinesviaLewis acid catalyzed ring-opening of activated aziridines followed by Cu(OAc)2-mediated intramolecular C–H amination in one-pot with excellent enantio- and diastereospecificity (ee 99%; de >99%).

Manganese(ii) chloride catalyzed highly efficient one-pot synthesis of propargylamines and fused triazoles via three-component coupling reaction under solvent-free condition

RSC Advances ◽  
2014 ◽  
Vol 4 (50) ◽  
pp. 26301-26308 ◽  
Author(s):  
Shakil N. Afraj ◽  
Chinpiao Chen ◽  
Gene-Hsian Lee
Keyword(s):  
Efficient Method ◽  
Cycloaddition Reaction ◽  
Coupling Reaction ◽  
Dipolar Cycloaddition ◽  
One Pot ◽  
Co Catalyst ◽  
Free Condition ◽  
Highly Efficient ◽  
Solvent Free Condition ◽  
Three Component Coupling

A one-pot green and highly efficient method for the synthesis of propargylamines and distereoselective synthesis of fused triazoles via three-component coupling in the presence of manganese(ii) chloride and a catalyst-free 1,3-dipolar cycloaddition reaction without using a co-catalyst is reported.

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