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Zinc diphosphonates templated by organic amines: syntheses and characterizations of [NH3(CH2)2NH3]Zn(hedpH2)2*2H2O and [NH3(CH2)nNH3(CH2)nNH3]Zn2(hedpH)2*2H2O (n=4,5,6) (hedp=1-hydroxyethylidenediphophonate).

Inorganic chemistry

Song HH, Zheng LM, Wang Z, Yan CH, Xin XQ.
PMID: 11531453
Inorg Chem. 2001 Sep 10;40(19):5024-9. doi: 10.1021/ic010033v.

Four new zinc diphosphonate compounds with formulas [NH(3)(CH(2))(2)NH(3)]Zn(hedpH(2))(2).2H(2)O, 1, [NH(3)(CH(2))(n)()NH(3)]Zn(2)(hedpH)(2).2H(2)O, (n = 4, 2; n = 5, 3; n = 6, 4) (hedp = 1-hydroxyethylidenediphosphonate) have been synthesized under hydrothermal conditions at 110 degrees C and in the presence...

Stereoselective synthesis of di- and monofluoromethylated vicinal ethylenediamines with di- and monofluoromethyl sulfones.

The Journal of organic chemistry

Liu J, Li Y, Hu J.
PMID: 17385922
J Org Chem. 2007 Apr 13;72(8):3119-21. doi: 10.1021/jo070094w. Epub 2007 Mar 27.

The diastereoselective nucleophilic (phenylsulfonyl)difluoromethylation and (phenylsulfonyl)monofluoromethylation of alpha-amino N-tert-butanesulfinimines (3) by using PhSO2CF2H and PhSO2CH2F reagents gave products 4 or 5 in high yields (73-99%) and with excellent diastereoselectivity (dr up to >99:1). After subsequent reductive desulfonylation and acid-catalyzed...

Strong Hydrogen Bonded Molecular Interactions between Atmospheric Diamines and Sulfuric Acid.

The journal of physical chemistry. A

Elm J, Jen CN, Kurtén T, Vehkamäki H.
PMID: 27128188
J Phys Chem A. 2016 May 26;120(20):3693-700. doi: 10.1021/acs.jpca.6b03192. Epub 2016 May 04.

We investigate the molecular interaction between methyl-substituted N,N,N',N'-ethylenediamines, propane-1,3-diamine, butane-1,4-diamine, and sulfuric acid using computational methods. Molecular structure of the diamines and their dimer clusters with sulfuric acid is studied using three density functional theory methods (PW91, M06-2X, and...

Ethylenediamine derivatives efficiently react with oxidized RNA 3' ends providing access to mono and dually labelled RNA probes for enzymatic assays and in vivo translation.

Nucleic acids research

Mamot A, Sikorski PJ, Siekierska A, de Witte P, Kowalska J, Jemielity J.
PMID: 34591964
Nucleic Acids Res. 2022 Jan 11;50(1):e3. doi: 10.1093/nar/gkab867.

Development of RNA-based technologies relies on the ability to detect, manipulate, and modify RNA. Efficient, selective and scalable covalent modification of long RNA molecules remains a challenge. We report a chemical method for modification of RNA 3'-end based on...

Synthesis of chiral 1,2-diamines by asymmetric lithiation-substitution.

Organic letters

Coldham I, Copley RC, Haxell TF, Howard S.
PMID: 11700142
Org Lett. 2001 Nov 15;3(23):3799-801. doi: 10.1021/ol016818m.

[reaction--see text] The imidazolidine (tetrahydroimidazole) 2, prepared in one step from N-iso-propylethylenediamine, was subjected to asymmetric lithiation and substitution using sec-butyllithium, (-)-sparteine and a range of electrophiles. Substituted imidazolidines were formed with high optical purity and could be hydrolyzed...

Reactive Silver Oxalate Ink Composition with Enhanced Curing Conditions for Flexible Substrates.

ACS applied materials & interfaces

Zope KR, Cormier D, Williams SA.
PMID: 29303549
ACS Appl Mater Interfaces. 2018 Jan 31;10(4):3830-3837. doi: 10.1021/acsami.7b19161. Epub 2018 Jan 19.

A solid silver-ligand complex, μ-oxolato-bis(ethylenediaminesilver(I)), was developed for formulating particle-free conductive metal-organic decomposition (MOD) inkjet inks. The complex comprises both a high molar silver content and solubility in inkjet compatible polar solvents. An aqueous ink formulation with 29.5 wt...

Low-Temperature Reductive Aminolysis of Carbohydrates to Diamines and Aminoalcohols by Heterogeneous Catalysis.

Angewandte Chemie (International ed. in English)

Pelckmans M, Vermandel W, Van Waes F, Moonen K, Sels BF.
PMID: 28892238
Angew Chem Int Ed Engl. 2017 Nov 13;56(46):14540-14544. doi: 10.1002/anie.201708216. Epub 2017 Oct 13.

Short amines, such as ethanolamines and ethylenediamines, are important compounds in today's bulk and fine chemicals industry. Unfortunately, current industrial manufacture of these chemicals relies on fossil resources and requires rigorous safety measures when handling explosive or toxic intermediates....

Recent advances in tuberculosis: New drugs and treatment regimens.

Current respiratory medicine reviews

Sloan DJ, Davies GR, Khoo SH.
PMID: 24683386
Curr Respir Med Rev. 2013 Jun 01;9(3):200-210. doi: 10.2174/1573398x113099990017.

The current treatment regimen against drug susceptible tuberculosis (DS-TB) was defined by the 1980s. Since then the emergence of the global HIV pandemic and the escalation of drug resistant (DR-) forms of TB have presented new challenges for therapeutic...

Diastereoselective Synthesis of Enantioenriched Trifluoromethylated Ethylenediamines and Isoindolines Containing Two Stereogenic Carbon Centers by Nucleophilic Trifluoromethylation Using HFC-23.

The Journal of organic chemistry

Hirano K, Saito T, Fujihira Y, Sedgwick DM, Fustero S, Shibata N.
PMID: 32421330
J Org Chem. 2020 Jun 19;85(12):7976-7985. doi: 10.1021/acs.joc.0c00796. Epub 2020 Jun 02.

Fluoroform, HFC-23, is an industrial byproduct from the synthesis of polytetrafluoroethylene and is a vastly underused resource; however, its physicochemical properties have hindered progress toward synthetic uses. Herein, we describe the use of HFC-23 as a cheap trifluoromethylating agent...

Ethylenediamine derivatives efficiently react with oxidized RNA 3' ends providing access to mono and dually labelled RNA probes for enzymatic assays and in vivo translation.

Nucleic acids research

Mamot A, Sikorski PJ, Siekierska A, de Witte P, Kowalska J, Jemielity J.
PMID: 34591964
Nucleic Acids Res. 2022 Jan 11;50(1):e3. doi: 10.1093/nar/gkab867.

Development of RNA-based technologies relies on the ability to detect, manipulate, and modify RNA. Efficient, selective and scalable covalent modification of long RNA molecules remains a challenge. We report a chemical method for modification of RNA 3'-end based on...

NMR determination of the microscopic constants of diprotonated diamines in aqueous solution.

Talanta

Creyf HS, van Poucke LC, Eeckhaut Z.
PMID: 18961374
Talanta. 1973 Oct;20(10):973-8. doi: 10.1016/0039-9140(73)80005-0.

The microscopic acidity constants of the diprotonated asymmetric N-methyl-substituted ethylenediamines and N-methylpiperazine were determined by using the change of the chemical shift of the methyl protons with varying acidity. The determination was carried out at 25 degrees in aqueous...

Polyoxotitanate Molecular Cage Featuring Four Types of Ethylenediamines: Formation Mechanism Insight from Host-Guest Interaction and Crystallographic Study.

Inorganic chemistry

Cui X, Zhang FQ, Li X, Hou JJ, Li H, Zhang XM.
PMID: 34081454
Inorg Chem. 2021 Jun 21;60(12):9174-9180. doi: 10.1021/acs.inorgchem.1c01189. Epub 2021 Jun 03.

Titanium-oxide or polyoxotitanate clusters are a new type of inorganic host materials that can encapsulate inorganic molecules or ions. We report herein a (NH

Showing 1 to 12 of 14 entries