402 results

4’-(N-(2-cyanoethyl)pyrrol-2-yl)-2,2’:6’,2’’-terpyridine

Disciplines : chemistry, organic
Collected date : Jun 2022
Creators : Jérôme Husson

Data for the synthesis and caracterization of 4’-(N-(2-cyanoethyl)pyrrol-2-yl)-2,2’:6’,2’’-terpyridine.

4′-(N-(Propargyl)pyrrol-2-yl)-2,2′:6′,2′′-terpyridine

Disciplines : chemistry, organic
Collected date : from 2018 to 2019

A new terpyridine molecule, bearing a N-propargylated pyrrole, was prepared and characterized. Its synthesis was based on a Krohnke-type reaction between 2-acetylpyridine and N-propargylpyrrole-2-carboxaldehyde in a basic medium. An allene-containing terpyridine was also obtained as a by-product.

Glaciological data Austre Lovén Svalbard

Collected date : from Oct 2008 ongoing
Creators : Eric Bernard

These data are measured in High Arctic over an observatory basin, located at 79°N on the W coast of Svalbard. Austre Lovén is a small 4.5 km² polythermal glacier in constant decline since the end of the LIA. The surrounding catchment is no more than 10 km² and exhibits a significant periglacial area ...

Pollen analysis - La Cluse-et-Mijoux (F-25), La Cluse

Collected date : from Aug 2021 ongoing
Creators : Hervé Richard

Pollen tests in a white clay fill on the right bank of the Doubs. Two samples: 40 and 75 cm deep.

Pollen analysis - Vatteville-la-Rue (F-76), Mare de la Pelouse, Forêt de Brotonne

Collected date : from May 2020 ongoing
Creators : Hervé Richard

Eight pollen tests carried out on a borehole about one metre deep from a peat bog in the Brotonne forest. Samples very rich in pollen and spores. Last two millennia (Middle Ages?).

1-{4-[(Hexyloxy)methyl]pyridin-2-yl}ethanone

Disciplines : chemistry, organic
Collected date : 2016
Creators : Florian Charrier

A new member of the 2-acetylpyridine family has been prepared and characterized by NMR and IR spectroscopies.

Phytomanagement - Vieux-Charmont (F-25)

Disciplines : forestry mycology cell biology ...
Collected date : from 2018 ongoing

The study site is an industrial wasteland, located in the city of Vieux-Charmont in the Doubs (France). The site presents an urbanized environment with the presence of dwellings, the Belfort-Montbéliard greenway. Several wetlands are also present, in particular the gravels pond and the river "la ...

New spiropyrrolothiazole derivatives bearing an oxazolone moiety as potential antidiabetic agent: Design, synthesis, crystal structure, Hirshfeld surface analysis, ADME and molecular docking studies

In a sustained search for novel and effective antihyperglycemics, a new series of fifteen isomeric oxazolone-fused dispiropyrrolothiazoles resulting from one-pot three component reaction between L-4-thiazolidine carboxylic acid, arylidene-oxazolones and isatin (or acenaphthenequinone) has been ...

Antimicrobial Activity and DFT Studies of a Novel Set of Spiropyrrolidines Tethered with Thiochroman-4-one/Chroman-4-one Scaffolds

A novel series of 14 spiropyrrolidines bearing thiochroman-4-one/chroman-4-one, and oxindole/acenaphthylene-1,2-dione moieties were synthesized and characterized by spectroscopic techniques, as well as by three X-ray diffraction studies, corroborating the stereochemistry. Quantum chemical ...

Synthesis, antidiabetic activity and molecular docking study of rhodanine-substitued spirooxindole pyrrolidine derivatives as novel α-amylase inhibitors

In a sustained search for novel α-amylase inhibitors for the treatment of type 2 diabetes mellitus (T2DM), we report herein the synthesis of a series of nineteen novel rhodanine-fused spiro[pyrrolidine-2,3′-oxindoles]. They were obtained by one-pot three component [3 + 2] cycloaddition of stabilized ...

Pollen analysis - Les Rousses (F-39), Les Rousses lake

Collected date : from 1986 to 2021
Creators : Hervé Richard

Natural site: peat bog near the lake's outlet. 16 palynological samples. The selection was made in several drillings. Two pollen tests performed in 2021 towards the lake outlet.

Pollen analysis - Vaux-lès-Saint-Claude (F-39), Eau Morte

Collected date : from Oct 2021 ongoing
Creators : Hervé Richard

Pollen tests in the filling of a circular depression (ice rest, pockmark?) in the heart of a meander of the Bienne. Two samples: 162 and 200 cm deep.

1-(4-Formyl-2,6-dimethoxyphenoxy)-4-chlorobut-2-yne

Disciplines : chemistry, organic
Collected date : from 2020 to 2021
Creators : Jérôme Husson

A reaction of biomass-derived aldehyde synringaldehyde and half an equivalent of 1,4-dichlorobut-2-yne was attempted in order to obtain a bis-aldehyde with an alkyne spacer. The reaction was carried out in a basic media to effect bis O-alkylation, as described in literature for the preparation of ...

4′-(5-Methylfuran-2-yl)-2,2′:6′,2″-terpyridine: A New Ligand Obtained from a Biomass-Derived Aldehyde with Potential Application in Metal-Catalyzed Reactions

Disciplines : chemistry, organic
Collected date : from 2017 to 2018

The new ligand 4′-(5-methylfuran-2-yl)-2,2′:6′,2″-terpyridine (1) was prepared in one step from 2-acetylpyridine and 5-methylfurfural. The latter is an aldehyde that can be readily obtained from biomass. The new terpyridine molecule was characterized by 1H and 13C-NMR spectroscopy as well as by ...

Diversity-oriented Synthesis of Spiropyrrolo[1, 2-a]isoquinoline Derivatives via Diastereoselective and Regiodivergent Three-component 1,3-Dipolar Cycloaddition Reactions: In vitro and in vivo Evaluation of the Antidiabetic Activity of Rhodanine Analogues

Collected date : from 2018 to 2021

An efficient diastereoselective route is developed to get access to novel spiropyrrolo[1,2-a]isoquinoline-oxindole skeletons by a one-potthree-component [3 + 2] cycloaddition reaction of (Z)-5-arylidene-1,3-thiazolidine-2,4-diones, isatin derivatives, and 1,2,3,4-tetrahydroisoquinoline (THIQ). ...

Control of Structures and Emission Properties of (CuI)n 2-Methyldithiane Coordination Polymers

A structurally unique and strongly luminescent nonporous 3D coordination polymer (CP) [Cu8I8(methyldithiane)4]n, CP3, has been prepared in a quasi-anticipated manner from 2-methyl-1,3-dithiane, L1, and CuI. This CP incorporates an unprecedented Cu8I8 cluster built upon two side-fused open cubanes. ...

A Fused Poly(truncated rhombic dodecahedron)-Containing 3D Coordination Polymer: A Multifunctional Material with Exceptional Properties

The design of new and inexpensive metal-containing functional materials is of great interest. Herein is reported a unique thermochromic near-IR emitting coordination polymer, 3D-[Cu8I8(L1)2]n, CP2, which is formed when ArS(CH2)4SAr (L1, Ar = 4-C6H4OMe) reacts with 2 equiv of CuI in EtCN. In MeCN, ...

Crystal structure of di-[mu]-iodido-bis­[bis(aceto­nitrile-[kappa]N)copper(I)]

The title compound, [Cu2I2(CH3CN)4], exhibits a centrosymmetric Cu2I2 core [Cu...Cu distance = 2.7482 (11) Å], the CuI atoms of which are further coordinated by four mol­ecules of aceto­nitrile. The CuI atom has an overall distorted tetra­hedral coordination environment evidenced by L-Cu-L angles (L ...

Crystal structure of di-[mu]-iodido-bis­[(dimethyl sulfoxide-[kappa]O)(tri­phenyl­phosphane-[kappa]P)copper(I)]

The centrosymmetric dinuclear title compound, [Cu2I2(C2H6OS)2(C18H15P)2], represents the first example of a CuI complex ligated by an O-bound dimethyl sulfoxide ligand. In the crystal, the two tetrahedrally coordinated CuI atoms are bridged by two [mu]2-iodido ligands in an almost symmetrical ...

Crystal structure of the two-dimensional coordination polymer poly[di-μ-bromido-bis­(μ-tetra­hydro­thiophene)­dicopper(I)]

The polymeric title compound, [Cu2Br2(C4H8S)2]n, CP1, represents an example of a two-dimensional coordination polymer resulting from reaction of CuBr with tetra­hydro­thio­phene (THT) in MeCN solution. The two-dimensional layers consist of two different types of rhomboid-shaped dinuclear ...

4,4″-Dichloro-4′-(2-thienyl)-2,2′:6′,2″-terpyridine

Disciplines : chemistry, organic
Collected date : from 2017 to 2018

A new thiophene-substituted terpyridine derivative has been prepared and characterized. This ligand features a thiophene heterocycle (as an electrochemically polymerizable unit) as well as two chlorine atoms for further functionalization.

4′-(N-(Propan-1,2-dienyl)pyrrol-2-yl)-2,2′:6′,2″-terpyridine

Disciplines : chemistry, organic
Collected date : from 2018 to 2019

A new pyrrole-substituted terpyridine derivative that possesses an allene moiety was obtained as an “unexpected” sole product during an attempt to alkylate the N-atom of pyrrole with propargyl bromide in order to obtain an alkyne-functionalized terpyridine.

4′-(5-n-Propylthiophen-2-yl)-2,2′:6′,2″-terpyridine

Disciplines : chemistry, organic
Collected date : 2020

A new thiophene-substituted terpyridine derivative has been prepared through the reaction between 5-n-propylthiophene-2-carboxaldehyde and 2-acetylpyridine. This terpyridine derivative bears an alkyl chain linked via a thiophene heterocycle.

Pollen analysis - Le Miroir (F-71), La Tuilerie (La Peupleraie), A39-T1 and T2

Collected date : 1995
Creators : Hervé Richard

Natural site over the alignment of the A39 motorway; drilling. Two series: T1 (18 poor samples) and T2 (88 palynological samples + 2 radiocarbon datings). Samples often difficult to read. Publication CRAS, 1996.

Pollen analysis - Auneau (F-28), L'Hermitage (detour road 18/116/19)

Collected date : from 2011 to 2012

Natural site: drilling with motorised "russian" core. 120 palynological samples. + 6 radiocarbon datings. 2015 publication: only the "gallo-roman" part.

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Université de Bourgogne, Université de Franche-Comté, UTBM, AgroSup Dijon, ENSMM, BSB, Arts des Metiers