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le catalyseur peut être le tetrakis(triphenylphosphine)palladium(0).
the halide (br, cl) or triflate is an aryl, benzyl, or vinyl compound and the alkene contains at least one hydrogen and is often electron-deficient such as acrylate ester or an acrylonitrile.the catalyst can be tetrakis(triphenylphosphine)palladium(0), palladium chloride or palladium(ii) acetate.
Ultimo aggiornamento 2016-03-03
Frequenza di utilizzo: 1
Qualità:
ils peuvent être interceptés par les bases organiques comme la triphenylphosphine et la pyridine.
with organic bases such as triphenylphosphine or pyridine, their interception can occur.
Ultimo aggiornamento 2015-05-14
Frequenza di utilizzo: 1
Qualità:
on ajoute 12g de tetrakis triphenylphosphine palladium (0) et on chauffe le milieu réactionnel au reflux pendant 2h.
12 g of tetrakis(triphenylphosphine)palladium(0) are added and the reaction medium is heated at reflux for 2 h.
Ultimo aggiornamento 2014-12-03
Frequenza di utilizzo: 1
Qualità:
une méthode selon l'une quelconque des revendications 4 à 6, qui est appliquée en présence de chlorure de lithium ou de triphenylphosphine.
a process according to any one of claims 4 to 6, which is carried out in the presence of lithium chloride or triphenylphosphine.
Ultimo aggiornamento 2014-12-04
Frequenza di utilizzo: 2
Qualità:
le ligand est de préférence une phosphine telle que la triphenylphosphine, une arsine telle que la triphénylarsine ou encore l'acétonitrile ou le benzonitrile.
the ligand is preferably a phosphine such as trifurylphosphine, an arsine such as triphenylarsine or also acetonitrile or benzonitrile.
Ultimo aggiornamento 2014-12-03
Frequenza di utilizzo: 1
Qualità:
derive de triphenylphosphine, son procede de production, complexe de palladium contenant ledit derive, et procede de production d'un derive de biaryle
triphenylphosphine derivative, production process therefor, palladium complex thereof, and process for producing biaryl derivative
Ultimo aggiornamento 2014-11-25
Frequenza di utilizzo: 3
Qualità:
la réduction partielle de 10 avec une quantité insuffisante de triphenylphosphine conduit au méthylhémiacétal du formaldéhyde (19) et au méthoxyméthylhydroxyméthylperoxide (20).
partial reduction of 10 with a deficient amount of triphenylphosphine gave formaldehyde hemiacetal (19) and methoxymethylhydroxymethylperoxide (20).
Ultimo aggiornamento 2015-05-14
Frequenza di utilizzo: 1
Qualità:
on ajoute 5 % de tétrakis triphenylphosphine palladium (o) (3 mg ; 2,7.10 "3 mmol).
5% tetrakis(triphenylphosphine)palladium (0) (3 mg; 2.7×10 −3 mmol) is added.
Ultimo aggiornamento 2014-12-03
Frequenza di utilizzo: 1
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le composé éthyl-4,6-di-o-acétyl-2,3-didésoxy-α-d-érythro-hex-2-énopyranoside (1) en présence de triphenylphosphine et d'une quantité catalytique de tétrakis(triphénylphosphine)palladium(0) réagit avec différentes amines ou des composés ayant un groupement méthylène réactif et conduit avec d'excellents rendements aux produits aminés ainsi qu'aux dérivés c-alkylés en position allylique.
ethyl 4,6-di-o-acetyl-2,3-dideoxy-α-d-erythro-hex-2-enopyranoside (1) in the presence of triphenylphosphine and a catalytic amount of tetrakis(triphenylphosphine)palladium(0) reacted with a variety of amines or with reactive methylene compounds to give high yields of products aminated or c-alkylated, respectively, in an allylic position.
Ultimo aggiornamento 2015-05-14
Frequenza di utilizzo: 1
Qualità: