Selectivity and activity in catalytic hydrogenation of azido groups over Pd nanoparticles on aluminum oxy-hydroxide

2016 ◽  
Vol 40 (11) ◽  
pp. 9550-9555 ◽  
Author(s):  
Belgüzar Yasemin Kara ◽  
Benan Kılbaş ◽  
Haydar Göksu
Keyword(s):  
Sodium Borohydride ◽  
Catalytic Hydrogenation ◽  
Pd Nanoparticles ◽  
Aryl Azides ◽  
Catalytic Method

A practical and effective catalytic method has been developed for the reduction of aryl azides in the presence of PdAlO(OH) nanoparticles and sodium borohydride.

The synthesis of model lactones of cyclolignan type

1981 ◽  
Vol 46 (9) ◽  
pp. 2123-2128 ◽  
Author(s):  
Jiří Křepelka ◽  
Jiří Holubek
Keyword(s):  
Sodium Borohydride ◽  
Catalytic Hydrogenation ◽  
Dicarboxylic Acids ◽  
Inhibitory Effect ◽  
Experimental Animals

Lactones VI-IX were prepared on reduction of anhydrides of 4-aryl-1-methoxynaphthalene-2,3-dicarboxylic acids IV and V with sodium borohydride in methanol. Catalytic hydrogenation on platinum of lactones VIII and IX gave lactones with hydrogenated ring A, or A and C. Lactones XII and XIII were found to possess an inhibitory effect on the growth of the tumour S 37 in experimental animals.

Recyclable catalyst for catalytic hydrogenation of phenylacetylene by coupling Pd nanoparticles with highly compressible graphene aerogels

RSC Advances ◽  
2014 ◽  
Vol 4 (104) ◽  
pp. 59977-59980 ◽  
Author(s):  
Xu Zhang ◽  
Zhiyu Wang ◽  
Shuang Li ◽  
Chunlei Wang ◽  
Jieshan Qiu
Keyword(s):  
Graphene Oxide ◽  
Catalytic Hydrogenation ◽  
Chemical Reduction ◽  
Pd Nanoparticles ◽  
Catalytic Performance ◽  
Hydrogenation Reaction ◽  
Recyclable Catalyst ◽  
Graphene Aerogels ◽  
Excellent Catalytic Performance

Highly compressible graphene aerogels were made by chemical reduction of graphene oxide with HI, which act as recyclable catalyst to exhibit excellent catalytic performance towards selective semi-hydrogenation reaction after loading Pd nanoparticles.

The synthesis of D-angolosamine

1977 ◽  
Vol 55 (6) ◽  
pp. 1100-1103 ◽  
Author(s):  
Hans H. Baer ◽  
Fawzy F. Z. Georges
Keyword(s):  
Sodium Borohydride ◽  
Catalytic Hydrogenation ◽  
Title Compound ◽  
Amino Glycoside ◽  
Starting Point ◽  
Simplified Procedure

The synthesis of 2,3,6-trideoxy-3-dimethylamino-D-arabino-hexose hydrochloride (10) (D-angolosamine, a constituent of the antibiotic, angolamycin) is described. First, a simplified procedure for the preparation of methyl 6-deoxy-α-D-glucopyranoside from methyl α-D-glucopyranoside is recorded. The deoxy derivative served as the starting point for sequential preparation of methyl 3,6-dideoxy-3-nitro-α-D-glucopyranoside (1), its 2,4-diacetate (2), its 4-monoacetate (3), its 2-O-mesyl-4-acetate (4), its 2-mesylate (5), and methyl 2,3,6-trideoxy-3-nitro-α-D-erythro-hex-2-enopyranoside (6) essentially according to procedures previously established (in part, in the L-series). Treatment of 5 or 6 with sodium borohydride produced methyl 2,3,6-trideoxy-3-nitro-α-D-arabino-hexopyranoside (7). Catalytic hydrogenation of 7 gave the corresponding 3-amino glycoside hydrochloride (8) which was hydrolyzed to furnish 3-amino-2,3,6-trideoxy-D-arabino-hexose hydrochloride (9) (D-acosamine, the enantiomer of a component of the antibiotic, actinoidin). N,N-Dimethylation of 8 followed by hydrolysis afforded the crystalline title compound (10).

scholarly journals Mechanistic interpretation of selective catalytic hydrogenation and isomerization of alkenes and dienes by ligand deactivated Pd nanoparticles

Nanoscale ◽  
2015 ◽  
Vol 7 (42) ◽  
pp. 17786-17790 ◽  
Author(s):  
Jie S. Zhu ◽  
Young-Seok Shon
Keyword(s):  
Catalytic Hydrogenation ◽  
Pd Nanoparticles ◽  
Palladium Nanoparticle ◽  
Nanoparticle Catalysts ◽  
Alkene Hydrogenation

Unsupported thiolate-capped palladium nanoparticle catalysts are found to be highly substrate-selective for alkene hydrogenation and isomerization.

Model reactions for a synthesis of streptamine based on the diamination of nitrocyclitol acetates

1968 ◽  
Vol 46 (17) ◽  
pp. 2793-2797 ◽  
Author(s):  
Hans H. Baer ◽  
Margaret C. T. Wang
Keyword(s):  
Sodium Borohydride ◽  
Catalytic Hydrogenation ◽  
Borohydride Reduction ◽  
Permanganate Oxidation ◽  
Sodium Borohydride Reduction ◽  
Model Reactions

Treatment of trans,trans-2-nitro-1,3-cyclohexanediol diacetate with ammonia followed by acetylation gives trans,trans 1,3-diacetamido-2-nitrocyclohexane (4). Catalytic hydrogenation of 4 and subsequent acetylation lead to trans,trans-2,6-diacetamidocyclohexylamine (5) and trans,trans-1,2,3-triacetamidocyclohexane (6), respectively. Permanganate oxidation of 4 affords cis-2,6-diacetamidocyclohexanone (7; 2,4-dinitrophenylhydrazone, 8). Sodium borohydride reduction of 7 produces trans,trans-2,6-diacetamidocyclohexanol (9; O-acetate, 10).

Bromate reduction in water by catalytic hydrogenation using metal–organic frameworks and sodium borohydride

RSC Advances ◽  
2015 ◽  
Vol 5 (54) ◽  
pp. 43885-43896 ◽  
Author(s):  
Kun-Yi Andrew Lin ◽  
Shen-Yi Chen
Keyword(s):  
Sodium Borohydride ◽  
Catalytic Hydrogenation ◽  
Metal Organic Frameworks ◽  
Metal Organic ◽  
Bromate Reduction

Catalytic hydrogenation of bromate is a promising approach to remove bromate from water considering that this approach not only removes bromate but also converts it to bromide.

Pd nanoparticles stabilized with phosphine-functionalized porous ionic polymer for efficient catalytic hydrogenation of nitroarenes in water

2020 ◽  
Vol 44 (9) ◽  
pp. 3681-3689 ◽  
Author(s):  
Yizhu Lei ◽  
Zaifei Chen ◽  
Guosong Lan ◽  
Renshu Wang ◽  
Xiao-Yu Zhou
Keyword(s):  
Catalytic Activity ◽  
Catalytic Hydrogenation ◽  
Palladium Nanoparticles ◽  
Pd Nanoparticles ◽  
Catalytic Performance ◽  
High Catalytic Activity ◽  
Ionic Polymer ◽  
Electron Donation ◽  
Nano Size ◽  
Excellent Catalytic Performance

Small palladium nanoparticles stabilized with phosphine-functionalized PIP displayed high catalytic activity for nitroarenes hydrogenation. Nano-size Pd particles, electron-donation effect of phosphine ligand, and surface wettability account for its excellent catalytic performance.

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