Regioisomerically pure multiaryl coronene derivatives: highly efficient synthesis via bay-extended perylene tetrabutylester

2017 ◽  
Vol 53 (36) ◽  
pp. 5052-5055 ◽  
Author(s):  
Wenxuan Mao ◽  
Junji Zhang ◽  
Xin Li ◽  
Chen Li ◽  
He Tian
Keyword(s):  
Efficient Synthesis ◽  
Highly Efficient ◽  
High Yields

Regioisomerically pure multiaryl coronene bisimides (CBIs) are synthesized via a perylene tetraester precursor and IBr-mediated annelation with high yields.

A chemo- and regioselective C6-functionalization of 2,3-disubstituted indoles: highly efficient synthesis of diarylindol-6-ylmethanes

2019 ◽  
Vol 17 (13) ◽  
pp. 3462-3470 ◽  
Author(s):  
Qiong Wu ◽  
Gui-Lin Li ◽  
Shuang Yang ◽  
Xiao-Qin Shi ◽  
Tian-Zi Huang ◽  
...  
Keyword(s):  
Efficient Synthesis ◽  
Highly Efficient ◽  
High Yields

An organocatalytic chemo- and regioselective C6-functionalization of 2,3-disubstituted indoles has been established via a reaction with ortho-hydroxybenzyl alcohols, which afforded biologically important diarylindol-6-ylmethanes in high yields.

Highly Efficient Synthesis of Oxindole Derivatives Via Catalytic Intramolecular C-H Insertion Reactions of Diazoamides

2020 ◽  
Vol 840 ◽  
pp. 251-256 ◽  
Author(s):  
Phan Thi Thanh Nga ◽  
Masaya Tone ◽  
Hayato Inoue ◽  
Kazutaka Shibatomi ◽  
Seiji Iwasa
Keyword(s):  
Aromatic Ring ◽  
Substituent Effects ◽  
Efficient Synthesis ◽  
Insertion Reactions ◽  
Aniline Derivatives ◽  
Highly Efficient ◽  
High Yields

Oxindole derivatives were efficiently synthesized from diazoamides derived from aniline derivatives in the presence of a Ru(II)-Pheox catalyst. Ru(II)-Pheox was found to be one of the most efficient catalysts so far for the synthesis of oxindole derivatives from the diazoamides in high yields (up to 99%) with high regioselectivity. Furthermore, the reaction was rapid and no substituent effects on the aromatic ring.

Efficient Synthesis of Diaryl Sulfides by Copper-catalysed Coupling of Aryl Halides and Thioacetate in Water

2013 ◽  
Vol 37 (1) ◽  
pp. 19-21 ◽  
Author(s):  
Yimin Zhang ◽  
Iiu ◽  
Junmin Chen
Keyword(s):  
Functional Groups ◽  
Catalytic System ◽  
Aryl Halides ◽  
Efficient Synthesis ◽  
Highly Efficient ◽  
Wide Range ◽  
High Yields

A simple economical, and highly efficient catalytic system for the synthesis of diaryl sulfides by a copper-catalysed coupling of aryl halides and thioacetate in water has been developed. A variety of aryl halides reacted with thioacetate to give the desired products in high yields up to 95%. The present catalysis protocol tolerated a wide range of functional groups, including amino, fluoro, and carboxyl moieties.

Synthesis of a series of novel 2,3-dihydrofuranonaphthoquinone derivatives

2017 ◽  
Vol 41 (8) ◽  
pp. 448-451 ◽  
Author(s):  
Maryam Salari ◽  
Mohammad H. Mosslemin ◽  
Alireza Hassanabadi
Keyword(s):  
Reaction Time ◽  
Green Chemistry ◽  
Organic Solvent ◽  
Aromatic Aldehyde ◽  
Efficient Synthesis ◽  
One Pot ◽  
Short Reaction Time ◽  
Highly Efficient ◽  
One Pot Condensation ◽  
High Yields

A green and highly efficient synthesis of 12 novel trans-2-(4-chlorobenzoyl)-3-aryl-2,3-dihydronaphtho[2,3- b]furan-4,9-diones has been achieved via a three-component, one-pot condensation of 2-[2-(4-chlorophenyl)-2-oxoethyl)]isoquinolinium bromide with 2-hydroxy-1,4-naphthoquinone and an aromatic aldehyde in the presence of catalytic amounts of choline hydroxide in water under reflux conditions. The advantages of this method are a short reaction time, high yields and the avoidance of any hazardous organic solvent. Therefore, this procedure can be classified as green chemistry.

scholarly journals Simple and Efficient Synthesis of Allyl Sulfones through Cs2CO3-Mediated Radical Sulfonylation of Morita–Baylis–Hillman Adducts with Thiosulfonates

SynOpen ◽  
2021 ◽  
Vol 05 (01) ◽  
pp. 91-99
Author(s):  
Raju Jannapu Reddy ◽  
Angothu Shankar ◽  
Md. Waheed
Keyword(s):  
Efficient Synthesis ◽  
Mild Conditions ◽  
Highly Efficient ◽  
Plausible Mechanism ◽  
High Yields

AbstractA highly efficient and eco-friendly method has been developed for the synthesis of allyl sulfones using Morita–Baylis–Hillman (MBH) adducts and thiosulfonates under mild conditions. The Cs2CO3-promoted radical sulfonylation provided a series of allyl sulfones in good to high yields with high stereoselectivities. A wide variety of MBH bromides/acetates as well as thiosulfonates were tolerated and reliable in scaled-up synthesis. A plausible mechanism is proposed to rationalize the radical sulfonylation.

scholarly journals Synthesis of enantiomerically pure N-(2,3-dihydroxypropyl)arylamides via oxidative esterification

2013 ◽  
Vol 9 ◽  
pp. 2129-2136 ◽  
Author(s):  
Akula Raghunadh ◽  
Satish S More ◽  
T Krishna Chaitanya ◽  
Yadla Sateesh Kumar ◽  
Suresh Babu Meruva ◽  
...  
Keyword(s):  
Ring Opening ◽  
Efficient Synthesis ◽  
Enantiomerically Pure ◽  
Step Process ◽  
Oxidative Esterification ◽  
Highly Efficient ◽  
Chiral Purity ◽  
High Yields ◽  
Nitrogen Heterocyclic

A highly efficient synthesis of enantiomerically pure (S) and (R)-isomers of N-(2,3-dihydroxypropyl)arylamides has been developed with good overall yields in a two step process. The key step involves the ring opening of the chiral epoxide with a nitrogen heterocyclic carbene (NHC) and further rearrangement to chiral N-(2,3-dihydroxypropyl)arylamides in high yields and enantioselectivity. During the reaction, no erosion in chiral purity was observed.

Bismuth(III)-catalyzed rapid and highly efficient synthesis of 2-aryl-1-arylmethyl-1H-benzimidazoles in water

2008 ◽  
Vol 86 (2) ◽  
pp. 124-128 ◽  
Author(s):  
J S Yadav ◽  
B.V. Subba Reddy ◽  
K Premalatha ◽  
K Shiva Shankar
Keyword(s):  
Aromatic Aldehydes ◽  
Efficient Synthesis ◽  
Mild Conditions ◽  
Highly Efficient ◽  
High Yields ◽  
Bismuth Triflate

2-Aryl-1-arylmethyl-1H-benzimidazoles are prepared in high yields under extremely mild conditions via the condensation of aryl-1,2-diamines with aromatic aldehydes using 10 mol% of bismuth triflate in water. The use of water and readily available bismuth triflate makes this process quite simple, more convenient, and environment-friendly.Key words: aryl-1,2-diamines, aromatic aldehydes, bismuth catalysis, benzimidazoles.

Highly efficient synthesis of methyl ethyl ketone oxime through ammoximation over Ti-MOR catalyst

2014 ◽  
Vol 34 (1) ◽  
pp. 243-250
Author(s):  
Jianghong DING ◽  
Le XU ◽  
Hao XU ◽  
Haihong WU ◽  
Yueming LIU ◽  
...  
Keyword(s):  
Methyl Ethyl Ketone ◽  
Methyl Ethyl ◽  
Efficient Synthesis ◽  
Highly Efficient

Advanced Heterocyclic Branched Semiconducting Units - Highly Efficient Synthesis and Physicochemical Characteristic

2013 ◽  
Vol 17 (3) ◽  
pp. 283-295 ◽  
Author(s):  
Jadwiga Soloducho ◽  
Joanna Cabaj ◽  
Kamila Olech ◽  
Przemyslaw Data ◽  
Mieczyslaw Lapkowski
Keyword(s):  
Physicochemical Characteristic ◽  
Efficient Synthesis ◽  
Highly Efficient
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