Zobrazeno 1 - 10
of 13
pro vyhledávání: '"Jean Alex. Laffitte"'
Publikováno v:
Journal of Molecular Catalysis A: Chemical. :137-141
The Fries rearrangement of phenyl acetate for the paracetamol process is usually performed in hydrofluoric acid (HF). We have optimized this reaction with methane sulfonic acid (MSA), a strong, stable and biodegradable acid, to give para-hydroxyaceto
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::6e21d5d430a575e2480184387dcee19c
https://doi.org/10.1016/s1381-1169(01)00506-4
https://doi.org/10.1016/s1381-1169(01)00506-4
Publikováno v:
Scientific Reports
The effects of replacing the phenyl rings of triphenylamine (TPA) by naphtyl groups are analysed on a series of push-pull molecules containing a 2-thienyl-dicyanovinyl acceptor group. UV-Vis absorption spectroscopy and cyclic voltammetry show that th
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=pmid________::33136cc6135c048b8f78d8f9e45234f3
https://pubmed.ncbi.nlm.nih.gov/25761773
https://pubmed.ncbi.nlm.nih.gov/25761773
Autor:
Jean Pierre Genêt, X. Pfister, Catherine Pinel, Virginie Ratovelomanana-Vidal, Jean-Alex Laffitte
Publikováno v:
Tetrahedron Letters. 35:4559-4562
The reduction of racemic β-keto esters having the tetralone structure by chiral ruthenium(II) catalysts is realized with an ideal kinetic dynamic resolution. Remarkably, high anti selectivity approaching 100% and enantioselectivity (up to 97%) using
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::d8eca52410282184372cdf6676e561f8
https://doi.org/10.1016/s0040-4039(00)60727-x
https://doi.org/10.1016/s0040-4039(00)60727-x
Publikováno v:
Tetrahedron Letters. 35:3091-3094
The reduction of unsubstituted or methoxy-substituted (±)-2-carboxyethyl-1-tetralones by selected microorganisms affords optically active 1-hydroxy-2-carboxyethyl tetralins which can be used as versatile asymmetric synthons, for example in the prepa
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::1931cbed6fe829707c8d223ab4b8f2c1
https://doi.org/10.1016/s0040-4039(00)76837-7
https://doi.org/10.1016/s0040-4039(00)76837-7
Autor:
Jean Pierre Genêt, M.C.Caño De Andrade, Sergio Mallart, Virginie Ratovelomanana-Vidal, Catherine Pinel, X. Pfister, Jean-Alex Laffitte
Publikováno v:
Tetrahedron: Asymmetry. 5:665-674
A general and new synthesis of hexacoordinate chiral 1-[2-methylallyl]Ru II 2 complexes is presented. This synthesis uses the very accessible CODRu(2-methylallyl) 2 complex as starting material. These complexes (P*P)Ru(η 3 -(CH 2 ) 2 CCH 3 ) 2 (e.g.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::ad39fb57fa34fe4f9650935800e6583a
https://doi.org/10.1016/0957-4166(94)80029-4
https://doi.org/10.1016/0957-4166(94)80029-4
Publikováno v:
ChemInform. 25
The reduction of unsubstituted or methoxy-substituted (±)-2-carboxyethyl-1-tetralones by selected microorganisms affords optically active 1-hydroxy-2-carboxyethyl tetralins which can be used as versatile asymmetric synthons, for example in the prepa
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::a9dc592ae18ad10c2f0a9c9be8d6706c
https://doi.org/10.1002/chin.199438045
https://doi.org/10.1002/chin.199438045
Autor:
Jean-Pierre Genêt, Catherine Pinel, Sergio Mallart, Jean Alex Laffitte, Sylvain Juge, Nathalie Cailhol
Publikováno v:
Tetrahedron Letters. 33:5343-5346
The synthesis of (R, R)DIPAMP ruthenium bis (2-methylallyl)2 and halogeno derivative (R, R) DIPAMPRu2X23 complexes is presented, which uses the easily available from (COD)2Ru(2-methylallyl)21. These new catalysts were found to be effective for asymme
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::bc56fd961da4cae50f92abadc5965c96
https://doi.org/10.1016/s0040-4039(00)79088-5
https://doi.org/10.1016/s0040-4039(00)79088-5
Publikováno v:
Tetrahedron Letters. 31:6357-6360
The oxazaphopholidine borano complex 3 , prepared in one step from ephedrine, reacts with alkyl and aryl lithium compounds to afford regio and stereoselectively the corresponding aminophosphine complexes 4 . Acid methanolysis of 4 leads to the phosph
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::a93c034ee611c1a5f1458ffd8efade58
https://doi.org/10.1016/s0040-4039(00)97063-1
https://doi.org/10.1016/s0040-4039(00)97063-1
Publikováno v:
Journal of neurochemistry. 61(3)
(+)-S-Adenosyl-l-methionine [(+)-SAM] was isolated from rat brain and was quantified by HPLC followed by UV spectrophotometric measurements and by 1H-NMR. Its estimated ratio in brain is 3% of total SAM. Because of its commercial unavailability, (+)-
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::8179930588e01acdc5e6c9c402c6878d
https://pubmed.ncbi.nlm.nih.gov/8360691
https://pubmed.ncbi.nlm.nih.gov/8360691
Publikováno v:
The Journal of Organic Chemistry. 51:3428-3435
Synthese de mercapto-3 cyclobutanol (A) a partir de chloromethyl oxiranne et du derive lithie du bis-trimethylsilylmethylthio-2 perhydro pyranne. L'heterocycle du titre substitue allyl-3 et le (Z)-methyl-3 dithiabicyclo [5.1.1] nonene-6 sont prepares
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::2aa9aeb12915dbf4985ef9407664f5d3
https://doi.org/10.1021/jo00368a004
https://doi.org/10.1021/jo00368a004