Synthesis of Selenocyanates and Selenoethers of Amino Pyrazoles and Amino Uracils by In Situ Triselenium Dicyanide from Malononitrile and Selenium Dioxide DOI Creative Commons
Danish Ali,

Nurabul Mondal,

Anoop Kumar Panday

и другие.

ACS Omega, Год журнала: 2023, Номер 8(28), С. 25349 - 25357

Опубликована: Июль 5, 2023

Herein, we report an efficient method for synthesis of novel selenocyanates amino pyrazole, uracil, and isoxazole derivatives using in situ triselenium dicyanide from the combination malononitrile selenium dioxide DMSO medium. Using same but changing stoichiometry reagents sequence addition temperature, symmetrical selenoethers pyrazoles uracils were prepared good yields. Furthermore, utilized corresponding alkynyl selenides presence CuI Cs2CO3. The salient features this methodology are inexpensive starting materials, short reaction time, to very This is also applicable gram-scale uracils.

Язык: Английский

The O2-Mediated Cross-Dehydrogenative Coupling: Rose Bengal-Catalyzed Direct Oxidative α-Acyloxylation of Ketones DOI

Yunsheng Zhu,

Shengjie Song,

Lijun Zheng

и другие.

Organic Letters, Год журнала: 2023, Номер 25(26), С. 4918 - 4922

Опубликована: Июнь 28, 2023

A general and facile approach for the direct oxidative α-acyloxylation of ketones using molecular oxygen as oxidant is developed. This method avoids use excessive peroxides expensive metal catalysts, affording a variety α-acyloxylated in satisfactory yields. Experimental studies indicate that reaction proceeds via radical pathway. Additionally, α-hydroxy could be obtained by changing solvent.

Язык: Английский

Процитировано

5

Synthesis of organoselenium compounds using electrochemical and photochemical methods as novel approaches in organic chemistry DOI
Adrián A. Heredia, Lydia M. Bouchet, Willber D. Castro‐Godoy

и другие.

Tetrahedron, Год журнала: 2023, Номер 148, С. 133667 - 133667

Опубликована: Сен. 26, 2023

Язык: Английский

Процитировано

5

Silver-catalyzed three-component reaction of uracils, arylboronic acids, and selenium: synthesis of 5-arylselanyluracils DOI Creative Commons
Yuki Murata,

Saori Tsuchida,

Rena Nezaki

и другие.

RSC Advances, Год журнала: 2022, Номер 12(23), С. 14502 - 14508

Опубликована: Янв. 1, 2022

Herein, we describe a simple and general multi-component synthesis of 5-arylselanyluracils by the regioselective C-H selenation uracils. Reactions uracils with arylboronic acid Se powder in presence AgNO3 (10 mol%) at 120 °C under aerobic conditions afforded various 5-arylselanyluracils. The source introduced selanyl group was prepared from commercially available reaction system, thereby ensuring efficient protocol. This represents first example 5-arylselanyluracil system.

Язык: Английский

Процитировано

8

Metal‐Free Synthesis of Pyrimidine and Naphthoquinone‐Fused Pyrroles from Arylglyoxal‐Based Domino Reactions DOI
Anoop Kumar Panday, Danish Ali, Tasneem Parvin

и другие.

ChemistrySelect, Год журнала: 2023, Номер 8(14)

Опубликована: Апрель 7, 2023

Abstract Herein we report acid mediated two and three‐component domino reactions of cyclic enamines such as 2‐amino‐1,4‐naphthoquinone, 6‐amino‐1,3‐dimethyluracil with arylglyoxals for the synthesis diverse fused pyrroles. The two‐component reaction arylglyoxal 2‐amino‐1,4‐naphthoquinone in acetic medium provided substituted naphthoquinone‐fused pyrroles tethered hydroxyl aryl substituents. On other hand, under similar conditions, phenylglyoxal an unusual bipyrrolopyrimidine a quaternary carbon center following involving formation five new sigma bonds one‐pot. Interestingly, ethanol presence 10‐mol% PTSA product having pyrimidine pyrrole linked 6‐aminouracil moiety. We have also developed arylglyoxals, 4‐hydroxy‐1‐methylquinolin‐2(1H)‐one hydroxyquinoline derivatives.

Язык: Английский

Процитировано

4

Synthesis of Selenocyanates and Selenoethers of Amino Pyrazoles and Amino Uracils by In Situ Triselenium Dicyanide from Malononitrile and Selenium Dioxide DOI Creative Commons
Danish Ali,

Nurabul Mondal,

Anoop Kumar Panday

и другие.

ACS Omega, Год журнала: 2023, Номер 8(28), С. 25349 - 25357

Опубликована: Июль 5, 2023

Herein, we report an efficient method for synthesis of novel selenocyanates amino pyrazole, uracil, and isoxazole derivatives using in situ triselenium dicyanide from the combination malononitrile selenium dioxide DMSO medium. Using same but changing stoichiometry reagents sequence addition temperature, symmetrical selenoethers pyrazoles uracils were prepared good yields. Furthermore, utilized corresponding alkynyl selenides presence CuI Cs2CO3. The salient features this methodology are inexpensive starting materials, short reaction time, to very This is also applicable gram-scale uracils.

Язык: Английский

Процитировано

4