نتایج جستجو برای: chemoselective

تعداد نتایج: 1372  

Journal: :Chemical communications 2007
Barbara Procuranti Stephen J Connon

A new class of bifunctional organocatalyst promotes the chemoselective reduction of diketone electrophiles at catalytic loadings in the presence of an inorganic co-reductant.

Journal: :Faraday Discussions 2021

An alternative reaction mechanism combined with preferential perpendicular adsorption make non-noble metals chemoselective catalysts for nitroarene hydrogenation.

Journal: :iranian journal of catalysis 2011
gholamabbas chehardoli mohammad ali zolfigol tahereh azadbakht

1,1’-(ethane-1,2-diyl)dipyridinium bistribromide (edpbt) was used as a chemoselective and effective organocatalyst for the silylation of hydroxyl groups as well as desilylation of trimethylsilyl ethers under mild conditions at room temperature with good to excellent yields.

Journal: :Organic & biomolecular chemistry 2013
Teng-fei Niu Mu Sun Mei-fang Lv Wen-bin Yi Chun Cai

An efficient chemoselective process for the synthesis of 14- and 15-membered triazole-containing macrocycle compounds has been developed through the combination of two multicomponent reactions and an intramolecular Sonogashira cross-coupling reaction.

Journal: :Chemical communications 2005
Naoya Kumagai Shigeki Matsunaga Masakatsu Shibasaki

The cooperative catalysis of CpRu(PPh3)2(CH3CN)PF6 (1b) and DBU enables chemoselective nucleophilic activation of acetonitrile in the presence of base-sensitive aldehydes 2 to afford corresponding beta-hydroxynitriles in good yield.

Journal: :Organic & biomolecular chemistry 2014
R Noël V Gembus V Levacher J-F Brière

An organocatalysed and chemoselective one-pot oxa-Michael-cyclocondensation reaction of N-BocNHOH to unsaturated α-ketoesters is reported which affords an original entry to enantioenriched 3-isoxazoline carboxylate derivatives as biorelevant heterocyclic frameworks.

Journal: :iranian journal of science and technology (sciences) 2013
a. z. sardarian

4-dodecylbenzenesulfonic acid (dbsa) has been shown to be an efficient, mild, green, stable and chemoselective brønsted acid catalyst for the synthesis of 1, 1-diacetates (acylals) of aldehydes under solvent-free conditions. the mild condition, eco-friendly, excellent yields, short reaction times and using an easily available, inexpensive and reusable catalyst are important features of this met...

1,1’-(Ethane-1,2-diyl)dipyridinium bistribromide (EDPBT) was used as a chemoselective and effective organocatalyst for the silylation of hydroxyl groups as well as desilylation of trimethylsilyl ethers under mild conditions at room temperature with good to excellent yields.

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