Výsledky vyhledávání - "catalyst free"

Akademický článek

Novel transition metal-free synthetic protocols toward the construction of 2,3-dihydrobenzofurans: a recent update

Autor: Aqsa Mushtaq, Muhammad Irfan, Atta ul Haq, Asim Mansha, Samreen Gul Khan, Ameer Fawad Zahoor, Bushra Parveen, Ali Irfan, Katarzyna Kotwica-Mojzych, Mariola Glowacka, Mariusz Mojzych

Publikováno v: Frontiers in Chemistry, Vol 12 (2024)

2,3-Dihydrobenzofurans are noteworthy scaffolds in organic and medicinal chemistry, constituting the structural framework of many of the varied medicinally active organic compounds. Moreover, a diverse variety of biologically potent natural products

Externí odkaz: https://doaj.org/article/63be53628746406985c738cf0074962c

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Akademický článek

A simple and highly efficient catalyst-free for the synthesis of dihydro pyrido[1, 2-a]quinoxaline derivatives by four component reactions and evaluation of their antibacterial activity

Autor: Mahmoud Nassiri, Jaber Salehzadeh, Forough Jalili Milani, Parisa Babaei

Publikováno v: Results in Chemistry, Vol 11, Iss , Pp 101844- (2024)

In the current work, a new series of methyl-10-amino-9-cyano-6-oxo-8-aryl-6,8-dihydro-5H-pyrido[1,2-a]quinoxaline-7-carboxylate derivatives were efficiently designed and prepared using a convenient route in excellent yields by four-component reaction

Externí odkaz: https://doaj.org/article/f08bf2b3b2754d58ad5c4eaa24688a90

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Akademický článek

Mechanochemical Synthesis of α‐halo Alkylboronic Esters

Autor: Yunyi Zhao, Zekun Yang, Xin Wang, Qinchun Kang, Bobo Wang, Tianle Wu, Hao Lei, Peile Ma, Wenqiang Su, Siyuan Wang, Zhiqiang Wu, Xinsong Huang, Chunying Fan, Xiaofeng Wei

Publikováno v: Advanced Science, Vol 11, Iss 33, Pp n/a-n/a (2024)

Abstract α‐halo alkylboronic esters, acting as ambiphilic synthons, play a pivotal role as versatile intermediates in fields like pharmaceutical science and organic chemistry. The sequential transformation of carbon–boron and carbon–halogen bo

Externí odkaz: https://doaj.org/article/a869f85f81b24bff99a8e53d5a9e01c1

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Akademický článek

Zinc Promoted Cross‐Electrophile Sulfonylation to Access Alkyl–Alkyl Sulfones

Autor: Zhuochen Wang, Rui Ma, Chang Gu, Xiaoqian He, Haiwei Shi, Ruopeng Bai, Renyi Shi

Publikováno v: Advanced Science, Vol 11, Iss 32, Pp n/a-n/a (2024)

Abstract The transition metal‐catalyzed multi‐component cross‐electrophile sulfonylation, which incorporates SO2 as a linker within organic frameworks, has proven to be a powerful, efficient, and cost‐effective means of synthesizing challengi

Externí odkaz: https://doaj.org/article/743ec745251444e88447fc8341144ca3

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Akademický článek

Ultrafast and efficient continuous flow organic synthesis with a modified extruder-grinder system

Autor: Omid Hosseinchi Qareaghaj, Mohammad Ghaffarzadeh, Najmedin Azizi

Publikováno v: Scientific Reports, Vol 14, Iss 1, Pp 1-8 (2024)

Abstract The study introduces a groundbreaking continuous system that combines an extruder and grinder to enable catalyst-free and solvent-free reactions under mild conditions. This temperature-controlled system facilitates the synthesis of highly fu

Externí odkaz: https://doaj.org/article/c01b84ab4118498397b6e804b55e1b9b

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Akademický článek

1,1,1,3,3,3-Hexafluoro-2-propanol (HFIP) as a reusable promoting medium for the catalyst-free and green synthesis of dihydropyrano[2,3-c]pyrazole scaffolds

Autor: Farzaneh Mohamadpour

Publikováno v: Results in Chemistry, Vol 9, Iss , Pp 101629- (2024)

A manufactured protocol that is both helpful and free of catalyst has been presented for the production of dihydropyrano[2,3-c]pyrazole frameworks in polyfluorinated alcohol as a reusable promoting medium. All reactions are completed quickly, and the

Externí odkaz: https://doaj.org/article/cd4c20f801fc4a589f15a936a0f1a1c4

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Akademický článek

Catalyst-free synthesis of substituted benzimidazoles and benzothiazoles in a sustainable solvent

Autor: R. Bernadett Vlocskó, Manisha Mishra, A. Ioana Stoica, Leila Gustin, Béla Török

Publikováno v: Tetrahedron Green Chem, Vol 3, Iss , Pp 100035- (2024)

A catalyst-free synthesis of various 2-alkyl or aryl-substituted benzothiazoles and benzimidazoles has been developed at room temperature by simply combining alkyl or arylaldehydes with ortho-phenylenediamines and 2-aminothiophenols, respectively. Th

Externí odkaz: https://doaj.org/article/b1b7387dfa94483e8547d35b943eb643

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