Metal-Free Indole–Phenacyl Bromide Cyclization: A Regioselective Synthesis of 3,5-Diarylcarbazoles

2020 ◽  
Vol 85 (20) ◽  
pp. 13272-13279
Author(s):  
Sudipto Debnath ◽  
Tuluma Das ◽  
Tanmay K. Pati ◽  
Swapan Majumdar ◽  
Dilip K. Maiti
Keyword(s):  
Regioselective Synthesis ◽  
Phenacyl Bromide ◽  
Metal Free

Iodine-mediated C–N and C–S bond formation: regioselective synthesis of benzo[4,5]imidazo[2,1-b]thiazoles

2017 ◽  
Vol 41 (1) ◽  
pp. 75-80 ◽  
Author(s):  
Sethurajan Ambethkar ◽  
Muthalu Vellimalai ◽  
Vediappen Padmini ◽  
Nattamai Bhuvanesh
Keyword(s):  
Reaction Time ◽  
Intramolecular Cyclization ◽  
Simple Procedure ◽  
Bond Formation ◽  
Molecular Iodine ◽  
Regioselective Synthesis ◽  
Thiazole Derivatives ◽  
Short Reaction Time ◽  
Metal Free

The regioselective synthesis of benzo[4,5]imidazo[2,1-b]thiazole derivatives via amination (C–N) and intramolecular cyclization (C–S) reactions in the presence of molecular iodine has been reported. This method is base and metal free and features inexpensive catalysts, with a simple procedure and a short reaction time.

Iodine–NH4OAc mediated regioselective synthesis of 2-aroyl-3-arylimidazo[1,2-a]pyridines from 1,3-diaryl-prop-2-en-1-ones

2018 ◽  
Vol 16 (8) ◽  
pp. 1330-1336 ◽  
Author(s):  
Dilpreet Kour ◽  
Annah Gupta ◽  
Kamal K. Kapoor ◽  
Vivek K. Gupta ◽  
Rajnikant Rajnikant ◽  
...  
Keyword(s):  
Regioselective Synthesis ◽  
Metal Free

An efficient, metal-free regioselective synthesis of 2-aroyl-3-arylimidazo[1,2-a]pyridines from 1,3-diaryl-prop-2-en-1-ones has been developed by their reaction with 2-aminopyridine in the presence of I2/NH4OAc.

ChemInform Abstract: Regioselective Synthesis of Phenoxathiin Derivatives under Transition-Metal-Free Conditions.

ChemInform ◽  
2013 ◽  
Vol 44 (30) ◽  
pp. no-no
Author(s):  
Fangdong Hu ◽  
Xin Zhao ◽  
Yanqiu Li ◽  
Lei Feng ◽  
Chen Ma
Keyword(s):  
Transition Metal ◽  
Regioselective Synthesis ◽  
Metal Free

A transition metal-free approach towards the regioselective synthesis of β-carboline tethered pyrroles and 2,3-dihydro-1H-pyrroles

2020 ◽  
Vol 44 (28) ◽  
pp. 12370-12383
Author(s):  
Manpreet Singh ◽  
Avijit Kumar Paul ◽  
Virender Singh
Keyword(s):  
Transition Metal ◽  
Regioselective Synthesis ◽  
One Pot ◽  
Sequential Approach ◽  
Metal Free

A transition metal-free one-pot sequential approach has been unfolded for the synthesis of β-carboline tethered pyrroles and 2,3-dihydro-1H-pyrroles by using highly diverse 1-formyl-9H-β-carbolines as a template.

Metal-free Decarboxylative Amination: An Alternative Approach Towards Regioselective Synthesis of β-CarbolineN-fused Imidazoles

2017 ◽  
Vol 359 (7) ◽  
pp. 1213-1226 ◽  
Author(s):  
Dharmender Singh ◽  
Vipin Kumar ◽  
Nisha Devi ◽  
Chandi C. Malakar ◽  
Ravi Shankar ◽  
...  
Keyword(s):  
Regioselective Synthesis ◽  
Metal Free ◽  
Alternative Approach
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