Pyrrole chemistry. X. Friedel–Crafts alkylation of some pyrrole and furan derivatives

1970 ◽  
Vol 48 (10) ◽  
pp. 1550-1553 ◽  
Author(s):  
Hugh J. Anderson ◽  
C. W. Huang
Keyword(s):  
Furan Derivatives ◽  
Mechanistic Pathway ◽  
Substituted Furans

The Friedel–Crafts t-butylation of methyl 2-pyrrolecarboxylate and of 2-acetylpyrrole have been investigated. The results are found to be consistent with the mechanistic pathway suggested in earlier isopropylation papers. Evidence is presented that alkylation of similarly substituted furans may be interpreted in the same way.

Cascade cyclization and acyl migration of propargylic esters with isocyanides: rapid access to substituted furans

2019 ◽  
Vol 55 (58) ◽  
pp. 8394-8397 ◽  
Author(s):  
Jie Hu ◽  
Youwen Fei ◽  
Hongbin Zhao ◽  
Zhishuang Wang ◽  
Chunju Li ◽  
...  
Keyword(s):  
Acyl Migration ◽  
Furan Derivatives ◽  
Cascade Cyclization ◽  
Rapid Access ◽  
Propargylic Esters ◽  
Substituted Furans

A novel rearrangement of ester-activated propargylic acetate with isocyanide has been disclosed. This protocol enables a quick synthesis of polysubstituted furan derivatives.

Furan derivatives. XL. Synthesis of 5-nitro-2-substituted furans on the basis of 5-nitrofurfuryl nitrate

1972 ◽  
Vol 37 (9) ◽  
pp. 3144-3147 ◽  
Author(s):  
A. Jurášek ◽  
J. Kováč ◽  
A. Krutošíková ◽  
M. Hrdina
Keyword(s):  
Furan Derivatives ◽  
Substituted Furans

Rhodium-catalyzed synthesis of multi-substituted furans from N-sulfonyl-1,2,3-triazoles bearing a tethered carbonyl group

2015 ◽  
Vol 2 (1) ◽  
pp. 47-50 ◽  
Author(s):  
Wen-Biao Zhang ◽  
Shi-Dong Xiu ◽  
Chuan-Ying Li
Keyword(s):  
Carbonyl Group ◽  
Efficient Synthesis ◽  
Furan Derivatives ◽  
Substituted Furans

The efficient synthesis of highly functionalized furan derivatives from 1-sulfonyl-1,2,3-triazoles with a pendent carbonyl group is reported. The process involves an intramolecular trapping of α-imino carbene and subsequent aromatization.

Direct CuO nanoparticle-catalyzed synthesis of poly-substituted furans via oxidative C–H/C–H functionalization in aqueous medium

RSC Advances ◽  
2016 ◽  
Vol 6 (40) ◽  
pp. 33462-33467 ◽  
Author(s):  
Soumen Payra ◽  
Arijit Saha ◽  
Sandip Guchhait ◽  
Subhash Banerjee
Keyword(s):  
Aqueous Medium ◽  
Carbonyl Compounds ◽  
Aqueous Ethanol ◽  
Conjugate Addition ◽  
Cuo Nanoparticles ◽  
Domino Reactions ◽  
Furan Derivatives ◽  
Direct Functionalization ◽  
Substituted Furans ◽  
Cuo Nanoparticle

Here, we have reported CuO nanoparticles catalyzed synthesis of poly-functionalized furan derivatives via direct functionalization of α,β-unsaturated carbonyl compounds through conjugate addition initiated domino reactions in aqueous ethanol.

scholarly journals An efficient one-pot synthesis of highly substituted furans catalyzed by N-bromosuccinimide

2010 ◽  
Vol 75 (3) ◽  
pp. 299-305 ◽  
Author(s):  
Hassan Ghasemnejad-Bosra ◽  
Mohammad Faraje ◽  
Setareh Habibzadeh ◽  
Farhad Ramzanian-Lehmali
Keyword(s):  
One Pot ◽  
Furan Derivatives ◽  
One Pot Synthesis ◽  
The One ◽  
High Yields ◽  
Neutral Conditions ◽  
Substituted Furans

N-Bromosuccinimide was found to efficiently catalyze the synthesis of highly functionalized, tetra-substituted furan derivatives in the one-pot reactions of but-2-ene-1,4-diones and acetoacetate esters in the presence of i-PrOH as solvent under mild and neutral conditions at 80-90?C for 3-7 h in high yields (87-94%).

Rhodamines as Photocatalyst in Organic Synthesis

2020 ◽  
Vol 07 ◽  
Author(s):  
Avik K. Bagdi ◽  
Papiya Sikdar
Keyword(s):  
Visible Light ◽  
Organic Synthesis ◽  
Organic Dyes ◽  
Transition Metal Catalysts ◽  
Visible Light Photocatalysis ◽  
Eosin Y ◽  
Organic Transformations ◽  
The Sustainable Development ◽  
Mechanistic Pathway ◽  
Green Model

Abstract:: Organic synthesis under environment friendly conditions has great impact in the sustainable development. In this context, visible light photocatalysis has emerged as a green model as this offers an energy-efficient pathway towards the organic transformation. Different transition-metal catalysts (Ir-, Ru-, Cu- etc) and organic dyes (eosin Y, rose bengal, methylene blue etc) are well-known photocatalysts in organic synthesis. Apart from the well-known organophotoredox catalysts, rhodamines (Rhodamine B and Rhodamine 6G) have been also employed as efficient photocatalysts for different organic transformations. In this review, we will focus on the photocatalysis by rhodamines in organic synthesis. Mechanistic pathway of the methodologies will also be discussed. We believe this review will stimulate the employment of rhodamines in the visible light photocatalysis for efficient organic transformations in the future.

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

A New Method for the Synthesis of Furan Derivatives

1993 ◽  
Vol 23 (18) ◽  
pp. 2593-2597 ◽  
Author(s):  
M. Venugopal ◽  
B. Balasundaram ◽  
P. T. Perumal
Keyword(s):  
New Method ◽  
Furan Derivatives
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