Russian Chemical Bulletin最新文献_第7页

Synthesis and hypoglycemic properties of new derivatives of 3,12-dioxo-5β-cholan-24-oic acid

IF 1.7 4区化学

Russian Chemical Bulletin Pub Date : 2025-02-20 DOI: 10.1007/s11172-024-4479-0

O. V. Salomatina, S. A. Borisov, M. V. Khvostov, N. I. Komarova, O. A. Luzina, N. F. Salakhutdinov

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Levoglucosan as a probe for the study of DMSO—water mixtures using polarimetry

IF 1.7 4区化学

Russian Chemical Bulletin Pub Date : 2025-02-20 DOI: 10.1007/s11172-024-4491-4

A. V. Orlova, L. O. Kononov

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Erratum to: Searching for the synthetic methods towards siloxane molecular brushes

IF 1.7 4区化学

Russian Chemical Bulletin Pub Date : 2025-02-20 DOI: 10.1007/s11172-024-4492-3

M. A. Obrezkova, A. A. Selifonova, V. K. Revenko, A. M. Muzafarov

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Synthesis of 2-oxazolines proceeding from dehydroabietic and 12,14-dinitrodehydroabietic acids

IF 1.7 4区化学

Russian Chemical Bulletin Pub Date : 2025-02-20 DOI: 10.1007/s11172-024-4481-6

S. V. Pestova, E. S. Izmest’ev, D. V. Petukhov, S. A. Rubtsova

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New coumestans: synthesis, cytotoxic and antioxidant activity

IF 1.7 4区化学

Russian Chemical Bulletin Pub Date : 2025-02-20 DOI: 10.1007/s11172-024-4485-2

S. A. Popova, I. Yu. Chukicheva, Yu. R. Aleksandrova, M. E. Neganova

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Synthesis of hydrophilic chlorophyll derivatives containing terpene and galactose fragments and evaluation of the terpene fragment effect on the photocytotoxicity of target compounds

IF 1.7 4区化学

Russian Chemical Bulletin Pub Date : 2025-02-20 DOI: 10.1007/s11172-024-4487-0

M. V. Mal’shakova, Ya. I. Pylina, L. L. Frolova, A. V. Kutchin, D. V. Belykh

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Polyphenolic components of extracts from the knot wood of plum “Renklod sinii” (Renclode blue)

IF 1.7 4区化学

Russian Chemical Bulletin Pub Date : 2025-02-20 DOI: 10.1007/s11172-024-4486-1

D. E. Tsvetkov, A. S. Dmitrenok, Yu. E. Tsvetkov, A. O. Chizhov, N. E. Nifantiev

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Preparation of fluorinated 5,5′-dialkylsubstituted dipyrromethanes

IF 1.7 4区化学

Russian Chemical Bulletin Pub Date : 2025-02-20 DOI: 10.1007/s11172-024-4471-8

P. L. Kuznetsova, V. E. Shambalova, A. S. Aldoshin, K. A. Lyssenko, V. G. Nenajdenko

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Synthesis and competitive functionalization of ethyl 4-aryl-2-oxo- and ethyl 4-aryl-2-thioxo-6-(trifluoromethyl)tetrahydropyrimidine-5-carboxylates

IF 1.7 4区化学

Russian Chemical Bulletin Pub Date : 2025-02-20 DOI: 10.1007/s11172-024-4473-6

A. E. Ivanova, M. V. Goryaeva, Ya. V. Burgart, P. A. Slepukhin, V. I. Saloutin

{"title":"Synthesis and competitive functionalization of ethyl 4-aryl-2-oxo- and ethyl 4-aryl-2-thioxo-6-(trifluoromethyl)tetrahydropyrimidine-5-carboxylates","authors":"A. E. Ivanova, M. V. Goryaeva, Ya. V. Burgart, P. A. Slepukhin, V. I. Saloutin","doi":"10.1007/s11172-024-4473-6","DOIUrl":"10.1007/s11172-024-4473-6","url":null,"abstract":"<div>Efficient conditions were found for the dehydration of ethyl 6-aryl-4-hydroxy-2-oxo- and ethyl 6-aryl-4-hydroxy-2-thioxo-4-(trifluoromethyl)hexahydropyrimidine-5-carboxylates that formed in the Biginelli reaction from trifluoroacetoacetic ester, aldehyde, and (thio)urea. In the presence of thionyl chloride and pyridine, the dehydration affords tetrahydropyrimidines. Under these conditions, 4-CF3-2-thioxohexahydropyrimidine bearing an ortho-hydroxy group in the aryl substituent undergo cyclization to form ethyl 4-thioxotetrahydromethanobenzo[g][1,3,5]oxadiazocine-11-carboxylate. In the methylation and alkoxymethylation reactions, ethyl 4-aryl-2-oxo(thioxo)-6-(trifluoromethyl)tetrahydropyrimidine-5-carboxylates show an ambident nucleophilic character, reacting at the N(1), N(3), O, or S centers. Methyl-N(1)-tetrahydropyrimidines were obtained as the major methylation products; while the alkoxymethylation with paraformaldehyde and various alcohols afforded N(3)-substituted derivatives.</div>","PeriodicalId":756,"journal":{"name":"Russian Chemical Bulletin","volume":"73 12","pages":"3624 - 3637"},"PeriodicalIF":1.7,"publicationDate":"2025-02-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143446504","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

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Copper-based metal-organic frameworks as catalysts for the amination of aryl iodides

IF 1.7 4区化学

Russian Chemical Bulletin Pub Date : 2025-02-20 DOI: 10.1007/s11172-024-4467-4

A. S. Borisova, D. S. Kuliukhina, A. S. Malysheva, A. V. Murashkina, A. D. Averin, V. V. Vergun, V. I. Isaeva, E. N. Savelyev, I. A. Novakov, I. P. Beletskaya

{"title":"Copper-based metal-organic frameworks as catalysts for the amination of aryl iodides","authors":"A. S. Borisova, D. S. Kuliukhina, A. S. Malysheva, A. V. Murashkina, A. D. Averin, V. V. Vergun, V. I. Isaeva, E. N. Savelyev, I. A. Novakov, I. P. Beletskaya","doi":"10.1007/s11172-024-4467-4","DOIUrl":"10.1007/s11172-024-4467-4","url":null,"abstract":"<div>Copper-based metal-organic frameworks (Cu-MOFs) were successfully used for the amination of aryl iodides for the first time. The conditions were selected using four different Cu-MOFs in a model reaction of n-octylamine with iodobenzene. Efficient reaction requires the use of O,O′-bidentate ligands (2-acetylcyclohexanone, 2-isobutyrylcyclo-hexanone, rac-1,1′-bi(2-naphthol), or rac-BINOL), and, in the best cases, the yields of N-octylaniline can exceed 80%. The nature of MOF does not produce a strong effect on the reaction outcome. The amination of iodobenzene derivatives containing electron-donating and electron-withdrawing substituents in the para- and meta-positions was investigated. The study also demonstrated the possibility of successful N-arylation of adamantane-containing amines with iodobenzene and its derivatives in the presence of MOFs and rac-BINOL or 2-isobutyrylcyclohexanone ligands. The yields of the products were found to depend on the steric hindrances at the nitrogen atom, with the best yields (87–88%) being obtained in the N,N′-diarylation of adamantanediamines. Using the reaction of n-octylamine with iodobenzene, the possibility of catalyst reuse for up to 10 cycles was demonstrated.</div>","PeriodicalId":756,"journal":{"name":"Russian Chemical Bulletin","volume":"73 12","pages":"3567 - 3577"},"PeriodicalIF":1.7,"publicationDate":"2025-02-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143446441","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

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