scholarly journals Palladium-Catalyzed Approach to Allenic Aromatic Ethers and First Total Syntheses of Terricollene A

2021 ◽  
Author(s):  
Chaofan Huang ◽  
Fuchun Shi ◽  
Yifan Cui ◽  
Can Li ◽  
Jie Lin ◽  
...  
Keyword(s):  
Bond Formation ◽  
Reaction Conditions ◽  
Formation Reaction ◽  
Total Syntheses ◽  
Palladium Catalyzed

A palladium-catalyzed C-O bond formation reaction between phenols and allenylic carbonates to give 2,3-allenic aromatic ethers with decent to excellent yields under mild reaction conditions has been described. A variety...

Enantiospecific total syntheses of meroterpenoids (−)-F1839-I and (−)-corallidictyals B and D

2017 ◽  
Vol 15 (1) ◽  
pp. 65-68 ◽  
Author(s):  
Dattatraya H. Dethe ◽  
Balu D. Dherange ◽  
Saghir Ali ◽  
Mahesh M. Parsutkar
Keyword(s):  
Natural Products ◽  
Lewis Acid ◽  
Bond Formation ◽  
Environmentally Benign ◽  
Formation Reaction ◽  
Total Syntheses

Enantiospecific total syntheses of spiromeroterpenoid natural products (−)-F1839-I and (−)-corallidictyals B and D were achieved using the environmentally benign and highly atom economical Lewis acid catalysed Friedel–Crafts reaction and a highly regio- and stereoselective spirocyclic C–O bond formation reaction.

Palladium catalyzed C(sp2)–C(sp2) bond formation. A highly regio- and chemoselective oxidative Heck C-3 alkenylation of pyrones and pyridones

RSC Advances ◽  
2015 ◽  
Vol 5 (96) ◽  
pp. 78958-78961 ◽  
Author(s):  
Hafiz Ul Lah ◽  
Faheem Rasool ◽  
Syed Khalid Yousuf
Keyword(s):  
Bond Formation ◽  
Reaction Conditions ◽  
Simple Reaction ◽  
Ligand Free ◽  
Palladium Catalyzed

Palladium catalysed ligand free highly regio- and chemoselective dehydrogenative C-3 alkenylation of pyrones and unprotected pyridones from unactivated alkenes is reported. Simple reaction conditions and broad substrate scope make the process useful.

Ru-catalyzed oxidation and C–C bond formation of indoles for the synthesis of 2-indolyl indolin-3-ones under mild reaction conditions

2020 ◽  
Vol 98 (11) ◽  
pp. 667-669
Author(s):  
Xiao-Yu Zhou ◽  
Xia Chen
Keyword(s):  
Catalytic Oxidation ◽  
Bond Formation ◽  
High Yield ◽  
Target Product ◽  
Reaction Conditions ◽  
Formation Reaction ◽  
Butyl Hydroperoxide ◽  
Tert Butyl Hydroperoxide ◽  
Catalyzed Oxidation ◽  
Oxidation System

Herein, we described a ruthenium catalyzed oxidation and C–C bond formation reaction of 2-alkyl or 2-aryl substituted indoles using tert-butyl hydroperoxide (TBHP) as oxidant. Coupled with cascade transformation, it provided a mild catalytic oxidation system for the synthesis of 2-indolylindolin-3-ones. The reaction could readily occur using RuCl3·3H2O as catalyst, and the target product was obtained with medium to high yield.

Direct functionalization of cyclic ethers with maleimide iodides via free radial-mediated sp3 C–H activation

2021 ◽  
Author(s):  
Xiaoyu Cheng ◽  
Baojun Li ◽  
Mengsi Zhang ◽  
Haotian Lu ◽  
Wenbo Wang ◽  
...  
Keyword(s):  
Free Radical ◽  
Bond Formation ◽  
Cyclic Ethers ◽  
Reaction Conditions ◽  
Formation Reaction ◽  
Direct Functionalization

A new C–C bond formation reaction was developed through free radical-initiated direct C–H activation of cyclic ethers with maleimide iodides under mild reaction conditions.

Environment Friendly and Recyclable CuCl2-mediated C-S Bond Coupling Strategy Using DMEDA as Ligand, Base and Solvent

Synthesis ◽  
2021 ◽  
Author(s):  
Guodong Shen ◽  
Qichao Lu ◽  
Zeyou Wang ◽  
Weiwei Sun ◽  
Yalin Zhang ◽  
...  
Keyword(s):  
Catalytic System ◽  
Bond Formation ◽  
Environmentally Friendly ◽  
Industrial Applications ◽  
Reaction Conditions ◽  
Environment Friendly ◽  
Economic Strategy ◽  
Formation Reaction ◽  
Simple Reaction ◽  
Coupling Strategy

Simple reaction conditions and recyclable reagents are an irreplaceable advantage for environmentally friendly industrial applications. An environment friendly, recyclable and economic strategy was developed to synthesize diaryl chalcogenides by the CuCl2 catalyzed C-S bond formation reaction via iodobenzenes and benzenethiols/1,2-diphenyldisulfanes using N,N’-dimethylethane-1,2-diamine (DMEDA) as ligand, base and solvent. For these reactions, especially the reactions of diiodobenzenes and aminobenzenethiols/disulfanediyldianilines, a range of substrates is compatible to give the corresponding products in good to excellent yields. Both the reaction reagents of the catalytic system (CuCl2/DMEDA) are inexpensive, conveniently separable and recyclable for more than 5 cycles.

Palladium-catalyzed C(sp3)–P(III) bond formation reaction with acylphosphines as phosphorus source

2020 ◽  
Vol 61 (28) ◽  
pp. 152125 ◽  
Author(s):  
Mengyue Zhang ◽  
Zhichao Ma ◽  
Hongguang Du ◽  
Zhiqian Wang
Keyword(s):  
Bond Formation ◽  
Formation Reaction ◽  
Palladium Catalyzed ◽  
Phosphorus Source
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