In situ generation of functionality in a reactive binicotinic-acid-based ligand for the design of multi-functional copper(ii) complexes: syntheses, structures and properties

CrystEngComm ◽  
2015 ◽  
Vol 17 (8) ◽  
pp. 1871-1880 ◽  
Author(s):  
Dongsheng Deng ◽  
Hui Guo ◽  
Guohui Kang ◽  
Lufang Ma ◽  
Xu He ◽  
...  
Keyword(s):  
Catalytic Activity ◽  
Reaction Conditions ◽  
Strecker Reaction ◽  
Structures And Properties ◽  
In Situ Generation

Five copper binicotinic complexes have been synthesized depending on the reaction conditions. Complexes 1 and 2 display excellent catalytic activity for Strecker reaction of imines.

Phosphorus Promoted HZSM-5 Zeolites for the Coupling Transformation of Methanol with 1-Butene to Propylene

2020 ◽  
Author(s):  
Xiao-hua Tang ◽  
Rui-qiang Liu ◽  
Hai-feng Tian ◽  
Hui Li ◽  
fei zha ◽  
...  
Keyword(s):  
Catalytic Activity ◽  
Space Velocity ◽  
In Situ Synthesis ◽  
Synthetic Methods ◽  
Incipient Wetness Impregnation ◽  
Large Specific Surface Area ◽  
Reaction Conditions ◽  
Coupling Transformation ◽  
Incipient Wetness

Phosphorus promoted HZSM-5 zeolites (P-HZSM-5) were prepared by synthetic methods of incipient wetness impregnation and in-situ synthesis, respectively. It was characterized by the means of XRD, SEM, BET, TG and NH3-TPD. The P-HZSM-5 zeolite prepared by incipient wetness impregnation has a large specific surface area and pore size, and the weak acidity is remarkably increased. The catalytic activity of P-HZSM-5 for the coupling transformation of methanol with 1-butene to propylene was investigated. Under the reaction conditions of temperature at 550 ℃, pressure at 0.4 MPa, space velocity at 1800 mL/(gcath) and mole ratio of CH3OH/C4H8 to 1:1, the conversion of C4H8 can reach to 75.8%, and the selectivity and yield of propylene are 42.2% and 31.9%, respectively.

Photo-synergistic promoted in situ generation of Bi0–BiSbO4 nanostructures as an efficient catalyst for nitrobenzene reduction

RSC Advances ◽  
2015 ◽  
Vol 5 (125) ◽  
pp. 103013-103018 ◽  
Author(s):  
Mengqing Liu ◽  
Li Lv ◽  
Xiaomeng Du ◽  
Junyu Lang ◽  
Yiguo Su ◽  
...  
Keyword(s):  
Catalytic Activity ◽  
Efficient Catalyst ◽  
Nitrobenzene Reduction ◽  
In Situ Generation

This work reports on the construction of Bi0–BiSbO4 nanostructures to show photo-synergistic and efficient catalytic activity toward nitrobenzenes reduction.

Advantage of in situ Generation of N-Arylsulfonyl Imines from α-Amide Sulfones in the Phase Transfer Catalyzed Asymmetric Strecker Reaction.

ChemInform ◽  
2007 ◽  
Vol 38 (20) ◽  
Author(s):  
Takashi Ooi ◽  
Yukitaka Uematsu ◽  
Jun Fujimoto ◽  
Kazuhiro Fukumoto ◽  
Keiji Maruoka
Keyword(s):  
Phase Transfer ◽  
Strecker Reaction ◽  
In Situ Generation

In situ Generation and Utilization of CO: An Efficient Route towards N-Substituted Saccharin via Carbonylative Cyclization of 2-Iodosulfonamides

Synlett ◽  
2017 ◽  
Vol 28 (15) ◽  
pp. 2000-2003 ◽  
Author(s):  
Bhalchandra Bhanage ◽  
Sujit Chavan ◽  
Adithyaraj K.
Keyword(s):  
Catalyst System ◽  
Reaction Conditions ◽  
Efficient Route ◽  
In Situ Generation

The present protocol demonstrates the synthesis of N-substituted saccharines via carbonylative cyclization of 2-iodosulfonamides using a Pd(OAc)2/Xantphos catalyst system and phenyl formate as a CO source. A variety of saccharin derivatives is synthesized under milder reaction conditions.

scholarly journals Unprecedented nucleophile-promoted 1,7-S or Se shift reactions under Pummerer reaction conditions of 4-alkenyl-3-sulfinylmethylpyrroles

2018 ◽  
Vol 14 ◽  
pp. 2722-2729 ◽  
Author(s):  
Takashi Go ◽  
Akane Morimatsu ◽  
Hiroaki Wasada ◽  
Genzoh Tanabe ◽  
Osamu Muraoka ◽  
...  
Keyword(s):  
Successive Reaction ◽  
Reaction Conditions ◽  
Tetrabutylammonium Hydroxide ◽  
Pummerer Reaction ◽  
In Situ Generation ◽  
Shift Reaction

A unique 1,7-S- and Se-shift reaction under Pummerer reaction conditions of 4-alkenyl-3-sulfinyl- and seleninylpyrroles was described. The usual Pummerer reaction of 4-(alkenylaminomethyl)-3-phenylsulfinylpyrroles and a successive reaction with tetrabutylammonium hydroxide (TBAH) yielded either pyrrolo[3,2-c]azepines or N-pyrrol-3-ylmethyl-N-(4-hydroxy-3-sulfanylpropyl)-p-toluenesulfonamides (diols). Seleno-Pummerer reactions of 3-selanylmethylpyrroles also proceeded via in situ generation of selenoxides, followed by a treatment with TBAH.

scholarly journals Highly Functional Group Tolerant, (E)-Selective Transfer Semihydrogenation of Alkynes Catalysed by Iridium Complex Bearing Unsymmetrical Ferrocene-Based Phosphine Ligand

2021 ◽  
Author(s):  
Rafał Kusy ◽  
Marcin Lindner ◽  
Jakub Wagner ◽  
Karol Grela
Keyword(s):  
Catalytic Activity ◽  
Steric Hindrance ◽  
Functional Group ◽  
Phosphine Ligand ◽  
Iridium Complex ◽  
Selective Transfer ◽  
Reaction Conditions ◽  
Catalytic Systems ◽  
The Common

Herein, we present (E)-selective transfer semihydrogenation of alkynes based on in situ generated iridium complex from [Ir(COD)Cl]2 and unsymmetrical ferrocene-based phosphine ligand in the presence of formic acid as a hydrogen donor. The catalytic system is distinguished by unprecedented chemoselectivity and exceptional stereoselectivity substantiated by the broad scope of test-ed substrates, including natural products derivatives. The uniform reaction conditions may be applied to various alkynes, owing to a lack of over-reduction. The intriguing difference in catalytic activity between unsymmetrical and symmetrical ferrocene-based ligands was attributed to diver-gent coordination and steric hindrance. The presented methodology constitutes a solution to the common limitations of the published catalytic systems.

Advantage of in situ generation of N-arylsulfonyl imines from α-amide sulfones in the phase-transfer-catalyzed asymmetric Strecker reaction

2007 ◽  
Vol 48 (8) ◽  
pp. 1337-1340 ◽  
Author(s):  
Takashi Ooi ◽  
Yukitaka Uematsu ◽  
Jun Fujimoto ◽  
Kazuhiro Fukumoto ◽  
Keiji Maruoka
Keyword(s):  
Phase Transfer ◽  
Strecker Reaction ◽  
In Situ Generation
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