Ready Access to Densely Substituted Furans Using Tsuji–Wacker-Type Cyclization

2021 ◽  
Author(s):  
Dattatraya P. Masal ◽  
Rahul Choudhury ◽  
Aman Singh ◽  
D. Srinivasa Reddy
Keyword(s):  
Ready Access ◽  
Substituted Furans

scholarly journals Ready Access to Molecular Rotors Based on Boron Dipyrromethene Dyes-Coumarin Dyads Featuring Broadband Absorption

Molecules ◽  
2020 ◽  
Vol 25 (4) ◽  
pp. 781
Author(s):  
Ernesto Enríquez-Palacios ◽  
Teresa Arbeloa ◽  
Jorge Bañuelos ◽  
Claudia I. Bautista-Hernández ◽  
José G. Becerra-González ◽  
...  
Keyword(s):  
Molecular Rotors ◽  
Fluorescence Signal ◽  
Access Method ◽  
Broadband Absorption ◽  
Boron Dipyrromethene ◽  
Conformational Freedom ◽  
Meso Position ◽  
Photophysical Study ◽  
Ready Access

Herein we report on a straightforward access method for boron dipyrromethene dyes (BODIPYs)-coumarin hybrids linked through their respective 8- and 6- positions, with wide functionalization of the coumarin fragment, using salicylaldehyde as a versatile building block. The computationally-assisted photophysical study unveils broadband absorption upon proper functionalization of the coumarin, as well as the key role of the conformational freedom of the coumarin appended at the meso position of the BODIPY. Such free motion almost suppresses the fluorescence signal, but enables us to apply these dyads as molecular rotors to monitor the surrounding microviscosity.

Silyl substituted furans in the stereoselective Birch reduction

2001 ◽  
Vol 42 (34) ◽  
pp. 5841-5844 ◽  
Author(s):  
Timothy J Donohoe ◽  
Jean-Baptiste Guillermin ◽  
Andrew A Calabrese ◽  
Daryl S Walter
Keyword(s):  
Birch Reduction ◽  
Substituted Furans

ChemInform Abstract: Catalytic Reaction of Dimethyl Diazomalonate with 2-Mono- and 2,5-Dialkyl(alkenyl)-Substituted Furans.

ChemInform ◽  
1989 ◽  
Vol 20 (22) ◽  
Author(s):  
O. M. NEFEDOV ◽  
A. E. VASIL'VITSKII ◽  
V. L. ZLATKINA ◽  
D. S. YUFIT ◽  
YU. T. STRUCHKOV ◽  
...  
Keyword(s):  
Catalytic Reaction ◽  
Substituted Furans

scholarly journals Triflic acid promoted solvent free synthesis of densely functionalized furans

RSC Advances ◽  
2017 ◽  
Vol 7 (17) ◽  
pp. 10524-10528 ◽  
Author(s):  
Pulaganti Vijayaprasad ◽  
Avudoddi Venkanna ◽  
Medi Shanker ◽  
Eslavath Kishan ◽  
Pallapothula Venkateswar Rao
Keyword(s):  
Initial Step ◽  
Solvent Free ◽  
Triflic Acid ◽  
Solvent Free Synthesis ◽  
Substituted Furans

A simple, efficient and novel methodology has been developed for the synthesis of substituted furans mediated by triflic acid. In the reaction initial step involves the Friedel–Crafts arylation, followed by the dehydrative cyclization.

scholarly journals Ready access to anhydrous anionic lanthanide acetates using imidazolium acetate ionic liquids as the reaction medium

2021 ◽  
Author(s):  
Guillaume Bousrez ◽  
Olivier Renier ◽  
Steven P. Kelley ◽  
Brando Adranno ◽  
Elnaz Tahavori ◽  
...  
Keyword(s):  
Ionic Liquids ◽  
Reaction Medium ◽  
Ready Access

scholarly journals Cycloaddition of Thiourea- and Guanidine-Substituted Furans to Dienophiles: A Comparison of the Environmentally-Friendly Methods

2020 ◽  
Vol 3 (1) ◽  
pp. 57
Author(s):  
Luka Barešić ◽  
Davor Margetić ◽  
Zoran Glasovac
Keyword(s):  
High Pressure ◽  
Functional Groups ◽  
Organic Synthesis ◽  
High Speed ◽  
Environmentally Friendly ◽  
Microwave Assisted ◽  
Pressure Synthesis ◽  
Ultrasound Assisted ◽  
Substituted Furans ◽  
Guanidine Moiety

The cycloaddition strategy was employed in order to obtain a 7-oxanorbornene framework substituted with a guanidine moiety or its precursor functional groups: protected amine or thiourea. In order to optimize the conditions for the cycloaddition, several environmentally-friendly methods—microwave assisted organic synthesis, high pressure synthesis, high speed vibrational milling, and ultrasound assisted synthesis—were employed. The outcomes of the cycloaddition reactions were interpreted in terms of endo/exo selectivity, the conversion of the reactants to the product, and the isolated yields. In general, our results indicated the HP and HSVM approaches as the methods of choice to give good yields and conversions.

scholarly journals Iodine-Catalyzed Synthesis of Substituted Furans and Pyrans: Reaction Scope and Mechanistic Insights

2021 ◽  
Author(s):  
Domenic P. Pace ◽  
Raphaël Robidas ◽  
Uyen P. N. Tran ◽  
Claude Y. Legault ◽  
Thanh Vinh Nguyen
Keyword(s):  
Substituted Furans

ChemInform Abstract: A NHC-Involved, Cascade, Metal-Free, and Three-Component Synthesis of 2,3-Diarylated Fully Substituted Furans under Solvent-Free Conditions.

ChemInform ◽  
2012 ◽  
Vol 43 (6) ◽  
pp. no-no
Author(s):  
Chenxia Yu ◽  
Jun Lu ◽  
Tuanjie Li ◽  
Donglin Wang ◽  
Binbin Qin ◽  
...  
Keyword(s):  
Solvent Free ◽  
Metal Free ◽  
Solvent Free Conditions ◽  
Substituted Furans
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