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Showing 1 to 12 of 83 entries
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Lanthanide-mediated supramolecular cages and host-guest interactions.

Inorganic chemistry

El Aroussi B, Guénée L, Pal P, Hamacek J.
PMID: 21797240
Inorg Chem. 2011 Sep 05;50(17):8588-97. doi: 10.1021/ic201156q. Epub 2011 Jul 28.

The structure and thermodynamic properties of lanthanide complexes with a new tripodal ligand L2 have been elucidated using different physicochemical methods. At stoichiometric ratios, the tetrahedral three-dimensional complexes with lanthanide cations are formed in acetonitrile with good stabilities. Despite...

Remote stereoselective deconjugation of α,β-unsaturated esters by simple amidation reactions.

Chemical science

Vishe M, Hrdina R, Poblador-Bahamonde AI, Besnard C, Guénée L, Bürgi T, Lacour J.
PMID: 29142723
Chem Sci. 2015 Aug 01;6(8):4923-4928. doi: 10.1039/c5sc01118c. Epub 2015 May 25.

The thermodynamically disfavored isomerization of α,β-unsaturated esters to deconjugated β,γ-unsaturated analogues occurs readily when coupled to an amidation. Within the framework of macrocyclic derivatives, it is shown that 15, 16, and 18 membered macrocycles react with

Helicity inversion and redox chemistry of chiral manganese(II) cubanes.

Dalton transactions (Cambridge, England : 2003)

Deville C, Granelli M, Downward AM, Besnard C, Guenée L, Williams AF.
PMID: 25019262
Dalton Trans. 2014 Sep 14;43(34):12917-25. doi: 10.1039/c4dt01590h.

The chiral ligand S-1,2-bis(1H-benzimidazol-2-yl)ethanol, 1, reacts with manganese(II) salts to form cubanes which readily undergo oxidation reactions leading either to a tetranuclear manganese(II,III) mixed valence complex 4 or to a tetranuclear complex of ligand 5 where the secondary alcohol...

Asymmetric bromine-lithium exchange: on the importance of both the diamine ligand and the organolithium reagent.

Chemical communications (Cambridge, England)

Praz J, Graff J, Egger L, Guénée L, Wagschal S, Kündig EP, Alexakis A.
PMID: 26439116
Chem Commun (Camb). 2015 Dec 11;51(95):16912-5. doi: 10.1039/c5cc06548h.

The asymmetric bromine-lithium exchange on a series of prochiral biphenyls was investigated. As in many asymmetric organolithium reactions, the chiral ligand (here a diamine) was considered to be the enantiocontrolling element. We show here that the organolithium reagent also...

Enantioselective organocatalytic iodination-initiated Wagner-Meerwein rearrangement.

Organic letters

Romanov-Michailidis F, Guénée L, Alexakis A.
PMID: 24195731
Org Lett. 2013 Nov 15;15(22):5890-3. doi: 10.1021/ol402981z. Epub 2013 Nov 06.

The present manuscript describes a high-yielding enantioselective semipinacol transposition, initiated by an electrophilic iodination event. The title transformation makes use of the anionic phase-transfer catalysis (PTC) paradigm for chirality induction. Thus, when combined appropriately, the insoluble cationic iodinating reagent...

A simple chemical tuning of the effective concentration: selection of single-, double-, and triple-stranded binuclear lanthanide helicates.

Chemistry (Weinheim an der Bergstrasse, Germany)

Terazzi E, Guénée L, Bocquet B, Lemonnier JF, Dalla Favera N, Piguet C.
PMID: 19784971
Chemistry. 2009 Nov 23;15(46):12719-32. doi: 10.1002/chem.200902026.

The replacement of terminal 2-benzimidazol-6-carboxypyridine (two internal rotational degrees of freedom) with 2-benzimidazol-8-hydroxyquinoline (one internal rotational degree of freedom) into segmental bis-tridentate ligands in going from L2 and [L3-2 H](2-) to [L12 b-2 H](2-) does not significantly affect the...

Complexation of trivalent lanthanides with planar tridentate aromatic ligands tuned by counteranions and steric constraints.

Inorganic chemistry

Escande A, Guénée L, Buchwalder KL, Piguet C.
PMID: 19133740
Inorg Chem. 2009 Feb 02;48(3):1132-47. doi: 10.1021/ic801908c.

Among the plethora of parameters controlling the stability and structures of lanthanide coordination complexes, it is often difficult to decipher their relative importance in the global complexation processes. The combination of the bond valence method (for analyzing solid state...

Efficient synthesis of imino-methano Tröger bases by nitrene insertions into C-N bonds.

Organic letters

Pujari SA, Guénée L, Lacour J.
PMID: 23855678
Org Lett. 2013 Aug 02;15(15):3930-3. doi: 10.1021/ol4016892. Epub 2013 Jul 15.

A direct nitrene insertion into C-N bonds is observed upon treatment of methano-Tröger bases with arylsulfonyl iminophenyliodinanes under copper and dirhodium catalysis. Novel cyclic imino-methano Tröger bases are obtained (55-88%). Enantiopure products (ee ≥ 99%) can be obtained with...

Enantioselective halogenative semi-pinacol rearrangement: a stereodivergent reaction on a racemic mixture.

Chemical communications (Cambridge, England)

Romanov-Michailidis F, Pupier M, Guénée L, Alexakis A.
PMID: 25234590
Chem Commun (Camb). 2014 Nov 14;50(88):13461-4. doi: 10.1039/c4cc05923a.

An efficient, quantitative deracemization strategy for optically inactive allylic cycloalkanols has been achieved using the biphasic halogenative semi-pinacol reaction protocol. The resultant β-halo spiroketones, containing three contiguous stereogenic centers, were easily recovered with high diastereomeric and enantiomeric purities following...

Supramolecular squares of dirhodium(II) tetracarboxylate: combining carboxylate-exchange and metal-ligand coordination for self-assembly.

Chemical communications (Cambridge, England)

Tong LH, Clifford S, Gomila A, Duval S, Guénée L, Williams AF.
PMID: 22933013
Chem Commun (Camb). 2012 Oct 11;48(79):9891-3. doi: 10.1039/c2cc35206k. Epub 2012 Aug 29.

Square self-assemblies are obtained from dirhodium(II) tetracarboxylate complexes using an isonicotinate-type ligand to act as an equatorial ligand to one dirhodium unit and an axial ligand to another. It is shown that the supramolecular squares are formed selectively out...

Publisher Correction: Evidence that breast cancer risk at the 2q35 locus is mediated through IGFBP5 regulation.

Nature communications

Ghoussaini M, Edwards SL, Michailidou K, Nord S, Cowper-Sal Lari R, Desai K, Kar S, Hillman KM, Kaufmann S, Glubb DM, Beesley J, Dennis J, Bolla MK, Wang Q, Dicks E, Guo Q, Schmidt MK, Shah M, Luben R, Brown J, Czene K, Darabi H, Eriksson M, Klevebring D, Bojesen SE, Nordestgaard BG, Nielsen SF, Flyger H, Lambrechts D, Thienpont B, Neven P, Wildiers H, Broeks A, Van't Veer LJ, Rutgers EJT, Couch FJ, Olson JE, Hallberg E, Vachon C, Chang-Claude J, Rudolph A, Seibold P, Flesch-Janys D, Peto J, Dos-Santos-Silva I, Gibson L, Nevanlinna H, Muranen TA, Aittomäki K, Blomqvist C, Hall P, Li J, Liu J, Humphreys K, Kang D, Choi JY, Park SK, Noh DY, Matsuo K, Ito H, Iwata H, Yatabe Y, Guénel P, Truong T, Menegaux F, Sanchez M, Burwinkel B, Marme F, Schneeweiss A, Sohn C, Wu AH, Tseng CC, Van Den Berg D, Stram DO, Benitez J, Pilar Zamora M, Perez JIA, Menéndez P, Shu XO, Lu W, Gao YT, Cai Q, Cox A, Cross SS, Reed MWR, Andrulis IL, Knight JA, Glendon G, Tchatchou S, Sawyer EJ, Tomlinson I, Kerin MJ, Miller N, Haiman CA, Henderson BE, Schumacher F, Le Marchand L, Lindblom A, Margolin S, Teo SH, Yip CH, Lee DSC, Wong TY, Hooning MJ, Martens JWM, Collée JM, van Deurzen CHM, Hopper JL, Southey MC, Tsimiklis H, Kapuscinski MK, Shen CY, Wu PE, Yu JC, Chen ST, Alnæs GG, Borresen-Dale AL, Giles GG, Milne RL, McLean C, Muir K, Lophatananon A, Stewart-Brown S, Siriwanarangsan P, Hartman M, Miao H, Buhari SABS, Teo YY, Fasching PA, Haeberle L, Ekici AB, Beckmann MW, Brenner H, Dieffenbach AK, Arndt V, Stegmaier C, Swerdlow A, Ashworth A, Orr N, Schoemaker MJ, García-Closas M, Figueroa J, Chanock SJ, Lissowska J, Simard J, Goldberg MS, Labrèche F, Dumont M, Winqvist R, Pylkäs K, Jukkola-Vuorinen A, Brauch H, Brüning T, Koto YD, Radice P, Peterlongo P, Bonanni B, Volorio S, Dörk T, Bogdanova NV, Helbig S, Mannermaa A, Kataja V, Kosma VM, Hartikainen JM, Devilee P, Tollenaar RAEM, Seynaeve C, Van Asperen CJ, Jakubowska A, Lubinski J, Jaworska-Bieniek K, Durda K, Slager S, Toland AE, Ambrosone CB, Yannoukakos D, Sangrajrang S, Gaborieau V, Brennan P, McKay J, Hamann U, Torres D, Zheng W, Long J, Anton-Culver H, Neuhausen SL, Luccarini C, Baynes C, Ahmed S, Maranian M, Healey CS, González-Neira A, Pita G, Rosario Alonso M, Álvarez N, Herrero D, Tessier DC, Vincent D, Bacot F, de Santiago I, Carroll J, Caldas C, Brown MA, Lupien M, Kristensen VN, Pharoah PDP, Chenevix-Trench G, French JD, Easton DF, Dunning AM.
PMID: 29633761
Nat Commun. 2018 Apr 10;9:16193. doi: 10.1038/ncomms16193.

This corrects the article DOI: 10.1038/ncomms5999.

Bottom-Up Approach for the Rational Loading of Linear Oligomers and Polymers with Lanthanides.

Inorganic chemistry

Mirzakhani M, Nozary H, Naseri S, Besnard C, Guénée L, Piguet C.
PMID: 34601875
Inorg Chem. 2021 Oct 18;60(20):15529-15542. doi: 10.1021/acs.inorgchem.1c02157. Epub 2021 Oct 02.

The adducts between luminescent lanthanide tris(β-diketonate)s and diimine or triimine ligands have been explored exhaustively for their exceptional photophysical properties. Their formation, stability, and structures in solution, together with the design of extended metallopolymers exploiting these building blocks, remain,...

Showing 1 to 12 of 83 entries