Regioselective synthesis of substituted thiazoles via cascade reactions from 3-chlorochromones and thioamides

2020 ◽  
Vol 18 (31) ◽  
pp. 6162-6170
Author(s):  
Tianzi Dai ◽  
Chen Cui ◽  
Xueyu Qi ◽  
Yanshu Cheng ◽  
Qian He ◽  
...  
Keyword(s):  
Cascade Reactions ◽  
Cascade Reaction ◽  
Regioselective Synthesis ◽  
Environmentally Benign

An efficient and regioselective strategy to synthesize substituted thiazoles via a cascade reaction in an environmentally benign medium was developed.

Multi-component solvent-free cascade reaction of 2-cyanoacetamides: regioselective synthesis of pyridin-2-ones bearing quaternary centers

2020 ◽  
Vol 22 (1) ◽  
pp. 256-264 ◽  
Author(s):  
Lingbin Kong ◽  
Rong Huang ◽  
Haodan He ◽  
Yunxiang Fan ◽  
Jun Lin ◽  
...  
Keyword(s):  
Cascade Reactions ◽  
Cascade Reaction ◽  
Solvent Free ◽  
Regioselective Synthesis ◽  
Quaternary Centers

A novel protocol has been constructed for the synthesis of four types of pyridin-2-ones via multicomponent solvent-free cascade reactions of 2-cyanoacetamides, various ketones, and acetone.

An environmentally benign cascade reaction of chromone-3-carboxaldehydes with ethyl 2-(pyridine-2-yl)acetate derivatives for highly site-selective synthesis of quinolizines and quinolizinium salts in water

2020 ◽  
Vol 22 (20) ◽  
pp. 6943-6953 ◽  
Author(s):  
Li Chen ◽  
Rong Huang ◽  
Kun Li ◽  
Xing-Han Yun ◽  
Chang-Long Yang ◽  
...  
Keyword(s):  
Cascade Reaction ◽  
Environmentally Benign ◽  
Selective Synthesis ◽  
Site Selective ◽  
Reaction In Water

A protocol for the synthesis of quinolizines from ethyl 2-(pyridine-2-yl)acetates via an unprecedented cascade reaction in water was constructed.

Regioselective synthesis of spiro isoxazole‐oxindole‐tetrahydrothiophene hybrids via cascade reactions under catalyst‐free conditions

2019 ◽  
Vol 57 (1) ◽  
pp. 469-476 ◽  
Author(s):  
Sakkani Nagaraju ◽  
Kota Sathish ◽  
Neeli Satyanarayana ◽  
Banoth Paplal ◽  
Dhurke Kashinath
Keyword(s):  
Cascade Reactions ◽  
Regioselective Synthesis ◽  
Catalyst Free

Environmentally benign nucleophilic substitution reaction of arylalkyl halides in water using CTAB as the inverse phase transfer catalyst

2019 ◽  
Vol 43 (40) ◽  
pp. 16041-16045 ◽  
Author(s):  
Atul K. Godha ◽  
Jayaraman Thiruvengadam ◽  
Viswanadhan Abhilash ◽  
Prajwal Balgi ◽  
A. V. Narayanareddy ◽  
...  
Keyword(s):  
Nucleophilic Substitution ◽  
Substitution Reaction ◽  
Phase Transfer ◽  
Phase Transfer Catalyst ◽  
Regioselective Synthesis ◽  
Environmentally Benign ◽  
Nucleophilic Substitution Reaction ◽  
Active Methylene Compounds ◽  
Active Methylene ◽  
Inverse Phase Transfer Catalyst

An environmentally benign, scalable and highly selective C-arylalkylation of active methylene compounds is developed using CTAB as the inverse phase transfer catalyst. The methodology is also applicable to the regioselective synthesis of N-aralkyl/alkyl 2-pyridones.

scholarly journals Synthesis of spiro[benzo[4,5]imidazo[2,1-b][1,3]thiazole-2,3-thiolane]s via sulfa-Michael/aldol cascade reactions

2019 ◽  
Vol 43 (1-2) ◽  
pp. 63-66 ◽  
Author(s):  
Jiaying Lei ◽  
Xinliang Fu ◽  
Yulin Huang ◽  
Xiaofang Li
Keyword(s):  
Mass Spectrometry ◽  
Nuclear Magnetic Resonance ◽  
Magnetic Resonance ◽  
High Resolution ◽  
High Resolution Mass Spectrometry ◽  
Cascade Reactions ◽  
Cascade Reaction ◽  
Crystallographic Analysis ◽  
X Ray ◽  
Resolution Mass

The sulfa-Michael/aldol cascade reaction of ( Z)-2-arylmethylidene-benzo[4,5]imidazo[2,1- b]thiazol-3(2H)-ones and 1,4-dithiane-2,5-diol afforded novel 2-aryl-4-hydroxy-spiro[benzo[4,5]imidazo[2,1- b][1,3]thiazole-2,3-thiolan]-3-ones in moderate yields. The structures of all the products were characterized thoroughly by nuclear magnetic resonance, infrared and high-resolution mass spectrometry together with X-ray crystallographic analysis.

scholarly journals Brushing the surface: cascade reactions between immobilized nanoreactors

Nanoscale ◽  
2020 ◽  
Vol 12 (3) ◽  
pp. 1551-1562 ◽  
Author(s):  
Dalin Wu ◽  
Serena Rigo ◽  
Stefano Di Leone ◽  
Andrea Belluati ◽  
Edwin C. Constable ◽  
...  
Keyword(s):  
Polymer Brushes ◽  
Cascade Reactions ◽  
Cascade Reaction

A tandem cascade reaction between polymer brushes-supported nanoreactors has been demonstrated.

Diversity-Oriented Synthesis of Natural Products via Gold-Catalyzed Cascade Reactions

Synlett ◽  
2018 ◽  
Vol 29 (12) ◽  
pp. 1552-1571 ◽  
Author(s):  
Jianxian Gong ◽  
Zhen Yang ◽  
Yueqing Gu ◽  
Ceheng Tan
Keyword(s):  
Natural Products ◽  
Total Synthesis ◽  
Cascade Reactions ◽  
Cascade Reaction ◽  
Biologically Active ◽  
Synthetic Methods ◽  
Left Wing ◽  
Asymmetric Total Synthesis ◽  
Diversity Oriented Synthesis ◽  
Active Natural

This account describes our group’s latest research in the field of diversity-oriented synthesis of natural products via gold-catalyzed cascade reactions. We present two general strategies based on gold-catalyzed cycloisomerization: a gold-catalyzed cascade reaction of 1,7-diynes and a pinacol-terminated gold-catalyzed cascade reaction. We highlight our development of synthetic methods for the construction of biologically active natural products by using these two strategies.1 Introduction2 Gold-Catalyzed Cascade Reactions of 1,7-Diynes2.1 Collective Synthesis of C15 Oxygenated Drimane-Type Sesquiterpenoids2.2 Synthesis of Left-Wing Fragment of Azadirachtin I2.3 Collective Synthesis of Cladiellins3 Pinacol-Terminated Gold-Catalyzed Cascade Reaction3.1 Asymmetric Formal Total Synthesis of (+)-Cortistatins3.2 Total Synthesis of Orientalol F3.3 Asymmetric Total Synthesis of (–)-Farnesiferol C4 Summary and Outlook

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