1
|
Muthumanickam S, Thennila M, Yuvaraj P, Lingam KAP, Selvakumar K. An Efficient Synthesis of Heterogeneous and Hard Bound Ti
IV
‐MCM‐41 Catalyzed Mannich Bases and π‐Conjugated Imines. ChemistrySelect 2021. [DOI: 10.1002/slct.202103547] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
| | - Muthukumar Thennila
- Department of Physics Sethu Institute of Technology Virudhunagar 626115 . Tamilnadu India
| | - Paneerselvam Yuvaraj
- CSIR-North East Institute of Science & Technology Branch Laboratory Lamphelpat Imphal Manipur 795004 India
| | | | | |
Collapse
|
2
|
Hydrodesulfurization of 4,6-Dimethyldibenzothiophene and the Diesel Oil Fraction on NiMo Catalysts Supported over Proton-Exchanged AlMCM-41 and TiMCM-41 Extrudates. Catalysts 2021. [DOI: 10.3390/catal11091086] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
Abstract
NiMo catalysts supported on mesoporous MCM-41 type materials shaped with binder were tested for activity in the hydrodesulfurization of 4,6-dimethyldibenzothiophene (4,6-DMDBT) and the diesel fuel fraction (0.92 wt% of sulfur). The aim of the investigation was to evaluate the effect of ion exchange with protons of Al- or Ti-substituted MCM-41 mesoporous supports. The subjected catalytic systems were NiMo/HAlMCM-41 and NiMo/HTiMCM-41, and for comparison purposes NiMo/AlMCM-41 and NiMo/TiMCM-41. The samples were characterized by N2 sorption (at 77 K), XRD, TEM, XPS, SEM and Py–IR. It was found that the functionalization of AlMCM-41 and TiMCM-41 with protons increased the conversion of 4,6-DMDBT and the pseudo-first-order rate constant. Correspondingly, 4,6-DMDBT HDS reactions over the NiMo/HTiMCM-41 catalyst proceeded to a similar extent via hydrogenation and direct desulfurization, whereas over the NiMo/HAlMCM-41 they proceeded mainly via direct desulfurization. Furthermore, the ion-exchanged catalysts displayed two-fold higher efficiency in direct desulfurization than their non-modified counterparts. The NiMo/HTiMCM-41 catalyst exhibited the highest catalytic efficiency in the HDS of 4,6-DMDBT and the diesel oil fraction. The high activity of the NiMo/HTiMCM-41 catalyst is mainly attributed to its appropriate acidity, as well as the metal–support interaction providing both the high dispersion of the active phase and the desirable multilayered stacking morphology of the active phase slabs.
Collapse
|
3
|
Di JQ, Wang HJ, Cui ZS, Hu JY, Zhang ZH. Catalyst-free Synthesis of Aminomethylphenol Derivatives in Cyclopentyl Methyl Ether via Petasis Borono-Mannich Reaction. Curr Org Synth 2021; 18:294-300. [PMID: 33327919 DOI: 10.2174/1570179417666201216161143] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/10/2020] [Revised: 10/21/2020] [Accepted: 10/29/2020] [Indexed: 11/22/2022]
Abstract
OBJECTIVE Aminomethylphenol molecules have wider applications in pharmaceuticals, agrochemicals, plant protection and promising functional materials. The development of an efficient and practical method to prepare this class of compound is highly desirable from both environmental and economical points of view. MATERIALS AND METHODS In order to establish an effective synthetic method for preparing aminomethylphenol derivatives, the Petasis borono-Mannich reaction of salicylaldehyde, phenylboronic acid and 1,2,3,4- tetrahydroisoquinoline was selected as a model reaction. A variety of reaction conditions are investigated, including solvent and temperature. The generality and limitation of the established method were also evaluated. RESULTS AND DISCUSSION It was found that model reaction can be carried out in cyclopentyl methyl ether at 80 oC under catalyst-free conditions. This protocol, with broad substrate applicability, the reaction of various arylboronic acid, secondary amine and salicylaldehyde proceeded smoothly under optimal reaction conditions to afford various aminomethylphenol derivatives in high yields. A practical, scalable, and high-yielding synthesis of aminomethylphenol derivatives was successfully accomplished. CONCLUSION A catalyst-free practical method for the synthesis of minomethylphenol derivatives based on Petasis borono-Mannich (PBM) reaction of various arylboronic acid, secondary amine and salicylaldehyde in cyclopentyl methyl ether has been developed. The salient features of this protocol are avoidance of any additive/catalyst and toxic organic solvents, use of cyclopentyl methyl ether as the reaction medium, clean reaction profiles, easy operation, and high to excellent yield.
Collapse
Affiliation(s)
- Jia-Qi Di
- Hebei Key Laboratory of Organic Functional Molecules, National Demonstration Center for Experimental Chemistry Education, College of Chemistry and Material Science, Hebei Normal University, Shijiazhuang 050024, China
| | - Hao-Jie Wang
- Hebei Key Laboratory of Organic Functional Molecules, National Demonstration Center for Experimental Chemistry Education, College of Chemistry and Material Science, Hebei Normal University, Shijiazhuang 050024, China
| | - Zhen-Shui Cui
- Hebei Key Laboratory of Organic Functional Molecules, National Demonstration Center for Experimental Chemistry Education, College of Chemistry and Material Science, Hebei Normal University, Shijiazhuang 050024, China
| | - Jin-Yong Hu
- Hebei Key Laboratory of Organic Functional Molecules, National Demonstration Center for Experimental Chemistry Education, College of Chemistry and Material Science, Hebei Normal University, Shijiazhuang 050024, China
| | - Zhan-Hui Zhang
- Hebei Key Laboratory of Organic Functional Molecules, National Demonstration Center for Experimental Chemistry Education, College of Chemistry and Material Science, Hebei Normal University, Shijiazhuang 050024, China
| |
Collapse
|
4
|
Govardhana Reddy PV, Rajendra Prasad Reddy B, Venkata Krishna Reddy M, Raghava Reddy K, Shetti NP, Saleh TA, Aminabhavi TM. A review on multicomponent reactions catalysed by zero-dimensional/one-dimensional titanium dioxide (TiO 2) nanomaterials: Promising green methodologies in organic chemistry. JOURNAL OF ENVIRONMENTAL MANAGEMENT 2021; 279:111603. [PMID: 33172705 DOI: 10.1016/j.jenvman.2020.111603] [Citation(s) in RCA: 14] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/21/2020] [Revised: 10/30/2020] [Accepted: 10/30/2020] [Indexed: 05/14/2023]
Abstract
Heterogeneous catalysis has currently become an emerging tool for the design and development of sustainable manufacturing processes in order to obtain advanced intermediates, fine chemicals, and bioactive molecules. This field has been considered efficient and eco-friendly, as it investigates the utilization of non-hazardous metals for atom-economical reactions. Nanomaterials have created a significant impact on scientific and engineering advancements due to their tunable properties with superior performance over their massive counterparts. Due to the increased demand for heterogeneous catalysts in industries and academia, different transition metal oxides have been made into substantial nanostructures. Among them, titanium dioxide (TiO2) nanomaterials have received more attention on account of their chemical stability, low cost, dual acid-base properties, good oxidation rate and refractive index. Different modifications of TiO2 extend their applications as active catalysts or catalyst supports in diverse catalytic processes, such as photovoltaics, lithium batteries, pigments and others. One-dimensional (1-D) TiO2 nanostructures such as nanotubes, nanowires and nanorods have achieved greater importance owing to the unique properties of improved porosity, decreased inter-crystalline contacts, large surface-to-volume ratio, superior dispersibility, amplified accessibility of hydroxyl (-OH) groups and presence of good concentrations of Brønsted/Lewis acid sites. Since the discovery, 1-D TiO2 nanostructures have served good photocatalytic applications, but were less explored in organic transformations. While many articles and reviews have covered the applications of 0-D and 1-D TiO2 nanostructured materials (NSMs) in photoelectrochemical reactions and solar cells, there are other interesting applications of these as well. In contrast to the conventional multi-step processes that utilise the stepwise formation of individual bonds, one-pot conversions based on multicomponent reactions (MCRs) have acquired much significance in contemporary organic synthesis. This paper presents a critical review on history, classification, design and synthetic utility of titania-based nanostructures, which could be used as robust solid-acid catalysts and catalyst supports for MCRs. Further, to put ideas into perspective, the introduction and applications of MCRs for various organic transformations have been discussed.
Collapse
Affiliation(s)
| | | | | | - Kakarla Raghava Reddy
- School of Chemical and Biomolecular Engineering, The University of Sydney, Sydney, NSW, 2006, Australia.
| | - Nagaraj P Shetti
- Center for Electrochemical Science & Materials, Department of Chemistry, K.L.E. Institute of Technology, Hubballi, 580 027, Karnataka, India
| | - Tawfik A Saleh
- Chemistry Department, King Fahd University of Petroleum & Minerals, Dhahran, 31261, Saudi Arabia
| | - Tejraj M Aminabhavi
- Department of Pharmaceutics, SETs' College of Pharmacy, Dharwad, 580 007, Karnataka, India.
| |
Collapse
|
5
|
Simonetti SO, Pellegrinet SC. Theoretical Study of the Borono-Mannich Reaction with Pinacol Allenylboronate. J Org Chem 2020; 85:7494-7500. [PMID: 32364384 DOI: 10.1021/acs.joc.0c01003] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Abstract
A density functional theory study of the mechanism of the Borono-Mannich reaction using benzylamine and piperidine as representative examples of primary and secondary amines with pinacol allenylboronate is presented. The study shows that both reactions progress through coordination between the boron and the phenolic oxygen. Ring size strain and hydrogen bond activation appear to determine the observed divergent regioselectivity. In the case of benzylamine, the eight-membered ring transition structure that leads to the propargylamine exhibits a hydrogen bond between the hydrogen attached to the nitrogen and the phenolic oxygen (γ-attack), whereas for piperidine a hydrogen bond between the hydrogen on the imine carbon and one of the oxygens of the pinacol group was observed in the six-membered ring transition structure toward the allenylamine (α-attack).
Collapse
Affiliation(s)
- Sebastián O Simonetti
- Instituto de Química Rosario (IQUIR-CONICET), Facultad de Ciencias Bioquímicas y Farmacéuticas, Universidad Nacional de Rosario, Suipacha 531, Rosario 2000, Argentina
| | - Silvina C Pellegrinet
- Instituto de Química Rosario (IQUIR-CONICET), Facultad de Ciencias Bioquímicas y Farmacéuticas, Universidad Nacional de Rosario, Suipacha 531, Rosario 2000, Argentina
| |
Collapse
|
6
|
Wu P, Givskov M, Nielsen TE. Reactivity and Synthetic Applications of Multicomponent Petasis Reactions. Chem Rev 2019; 119:11245-11290. [PMID: 31454230 PMCID: PMC6813545 DOI: 10.1021/acs.chemrev.9b00214] [Citation(s) in RCA: 125] [Impact Index Per Article: 25.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/05/2019] [Indexed: 02/06/2023]
Abstract
The Petasis boron-Mannich reaction, simply referred to as the Petasis reaction, is a powerful multicomponent coupling reaction of a boronic acid, an amine, and a carbonyl derivative. Highly functionalized amines with multiple stereogenic centers can be efficiently accessed via the Petasis reaction with high levels of both diastereoselectivity and enantioselectivity. By drawing attention to examples reported in the past 8 years, this Review demonstrates the breadth of the reactivity and synthetic applications of Petasis reactions in several frontiers: the expansion of the substrate scope in the classic three-component process; nonclassic Petasis reactions with additional components; Petasis-type reactions with noncanonical substrates, mechanism, and products; new asymmetric versions assisted by chiral catalysts; combinations with a secondary or tertiary transformation in a cascade- or sequence-specific manner to access structurally complex, natural-product-like heterocycles; and the synthesis of polyhydroxy alkaloids and biologically interesting molecules.
Collapse
Affiliation(s)
- Peng Wu
- Chemical
Genomics Center of the Max Planck Society, Dortmund 44227, Germany
- Department
of Chemical Biology, Max Planck Institute
of Molecular Physiology, Dortmund 44227, Germany
- Chemical
Biology and Therapeutics Science, Broad
Institute of MIT and Harvard, Cambridge, Massachusetts 02142, United States
- Department
of Medicine and Brigham and Women’s Hospital, Harvard Medical School, Boston, Massachusetts 02115, United States
- Department
of Chemistry, Massachusetts Institute of
Technology, Cambridge, Massachusetts 02139, United States
- Department
of Drug Design and Pharmacology, University
of Copenhagen, Copenhagen DK-2100, Denmark
| | - Michael Givskov
- Costerton
Biofilm Center, Department of Immunology and Microbiology, University of Copenhagen, Copenhagen DK-2200, Denmark
- Singapore
Centre for Environmental Life Sciences Engineering, Nanyang Technological University, Singapore 637551, Singapore
| | - Thomas E. Nielsen
- Costerton
Biofilm Center, Department of Immunology and Microbiology, University of Copenhagen, Copenhagen DK-2200, Denmark
- Singapore
Centre for Environmental Life Sciences Engineering, Nanyang Technological University, Singapore 637551, Singapore
| |
Collapse
|
7
|
Bhoomireddy RPR, Narla LB, Peddiahgari VGR. Green synthesis of 1,2,3-triazoles via
Cu2
O NPs on hydrogen trititanate nanotubes promoted 1,3-dipolar cycloadditions. Appl Organomet Chem 2018. [DOI: 10.1002/aoc.4752] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
Affiliation(s)
| | - L.G. Bhavani Narla
- Department of Humanities and Sciences; SV College of Engineering; Kadapa 516003 Andhra Pradesh India
| | | |
Collapse
|
8
|
Chacko P, Shivashankar K. Synthesis of aminomethylphenol derivatives via magnetic nano
$$\hbox {Fe}_{3}\hbox {O}_{4}$$
Fe
3
O
4
catalyzed one pot Petasis borono-Mannich reaction. J CHEM SCI 2018. [DOI: 10.1007/s12039-018-1560-y] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
|
9
|
Kaboudin B, Zangooei A, Kazemi F, Yokomatsu T. Catalyst-free Petasis-type reaction: Three-component decarboxylative coupling of boronic acids with proline and salicylaldehyde for the synthesis of alkylaminophenols. Tetrahedron Lett 2018. [DOI: 10.1016/j.tetlet.2018.02.003] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
|
10
|
Reddy BRP, Reddy SS, Reddy PVG. Cu(OTf)2 loaded protonated trititanate nanotubes catalyzed reaction: a facile method for the synthesis of furo[2,3-b]quinoxalines. NEW J CHEM 2018. [DOI: 10.1039/c8nj00287h] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
An efficient method is developed for the synthesis of furo[2,3-b]quinoxalines via one-pot three-component reaction of o-phenylenediamine, ethylglyoxalate and phenylacetylenes.
Collapse
|
11
|
Reddy BRP, Reddy PVG, Shankar MV, Reddy BN. CuI Supported on Protonated Trititanate Nanotubes: A Reusable Catalyst for the One-Pot Synthesis of Propargylamines via A3-Coupling. ASIAN J ORG CHEM 2017. [DOI: 10.1002/ajoc.201600623] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/31/2023]
Affiliation(s)
| | | | - Muthukonda V. Shankar
- Nano Catalysis and Solar Fuels Research Laboratory; Department of Materials Science&Nanotechnology; Yogi Vemana University; Kadapa- 516 003 Andhra Pradesh India
| | - Bijivemula N. Reddy
- Department of Chemistry; Vellore Institute of Technology; Vellore- 632014 Tamil Nadu India
| |
Collapse
|
12
|
Paul J, Presset M, Le Gall E. Multicomponent Mannich-Like Reactions of Organometallic Species. European J Org Chem 2017. [DOI: 10.1002/ejoc.201700038] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/25/2023]
Affiliation(s)
- Jérôme Paul
- Electrochimie et Synthèse Organique; Université Paris Est, ICMPE (UMR 7182), CNRS, UPEC; 2-8 rue Henri Dunant 94320 Thiais France
| | - Marc Presset
- Electrochimie et Synthèse Organique; Université Paris Est, ICMPE (UMR 7182), CNRS, UPEC; 2-8 rue Henri Dunant 94320 Thiais France
| | - Erwan Le Gall
- Electrochimie et Synthèse Organique; Université Paris Est, ICMPE (UMR 7182), CNRS, UPEC; 2-8 rue Henri Dunant 94320 Thiais France
| |
Collapse
|
13
|
Praveen Kumar D, Lakshmana Reddy N, Srinivas B, Durga Kumari V, Shankar M. Influence of reaction parameters for the enhanced photocatalytic hydrogen production using surface modified semiconductor Titania nanotubes. ACTA ACUST UNITED AC 2017. [DOI: 10.1016/j.matpr.2017.09.079] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
|
14
|
Tabassum S, Govindaraju S, Pasha MA. Sonochemistry – an innovative opportunity towards a one-pot three-component synthesis of novel pyridylpiperazine derivatives catalysed by meglumine in water. NEW J CHEM 2017. [DOI: 10.1039/c6nj03919g] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
An unprecedented and expeditious synthetic strategy for rapid access to a diversity-oriented library of novel functionalized pyridyl piperazine derivatives is reported.
Collapse
Affiliation(s)
- S. Tabassum
- Department of Studies in Chemistry
- Central College Campus
- Bangalore University
- Bengaluru-560 001
- India
| | - S. Govindaraju
- Department of Studies in Chemistry
- Central College Campus
- Bangalore University
- Bengaluru-560 001
- India
| | - M. A. Pasha
- Department of Studies in Chemistry
- Central College Campus
- Bangalore University
- Bengaluru-560 001
- India
| |
Collapse
|
15
|
Hosseinzadeh R, Lasemi Z, Oloub M, Pooryousef M. A green protocol for the one-pot multicomponent Petasis boronic Mannich reaction using ball milling. JOURNAL OF THE IRANIAN CHEMICAL SOCIETY 2016. [DOI: 10.1007/s13738-016-0983-y] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
|
16
|
Praveen Kumar D, Lakshmana Reddy N, Karthikeyan M, Chinnaiah N, Bramhaiah V, Durga Kumari V, Shankar MV. Synergistic effect of nanocavities in anatase TiO2 nanobelts for photocatalytic degradation of methyl orange dye in aqueous solution. J Colloid Interface Sci 2016; 477:201-8. [PMID: 27289430 DOI: 10.1016/j.jcis.2016.05.014] [Citation(s) in RCA: 33] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/17/2016] [Revised: 05/11/2016] [Accepted: 05/11/2016] [Indexed: 10/21/2022]
Abstract
Nanocavities are empty voids exposed on the surface of one dimensional TiO2 nanostructured material. Often, they exhibited beneficial optical and electrical properties that leads to efficient photocatalytic reactions. This study reports formation of nanocavities on anatase TiO2 nanobelts (TNB) through dehydroxylation of surface hydroxyl groups during calcination process (350-600°C). The morphological and crystal structure analysis of TNB-500, -550 and -600 displayed the nanobelts shape with high density of nano-size cavities and increase in average diameter with calcination temperature. The SAED patterns confirm the anatase TiO2 phase. The enhanced light absorption properties of biphasic anatase/TiO2-B and anatase TiO2 than H2Ti3O7 are attributed to transformation of crystal structure upon calcination process. The catalytic activity was evaluated for degradation of methyl orange dye in aqueous solution under solar light irradiation. The reaction variables such as calcination temperature, amount of catalyst and pH of the methyl orange dye solution were studied and discussed in detail. Under optimal experimental conditions TNB-550 photocatalyst displayed highest degradation performance about 8 folds higher than H2Ti3O7. The high performance is explained as due to synergistic properties of one dimensional anatase TiO2 with high density of nanocavities leading to one dimensional transfer of electrons and high absorption co-efficient in UV-A spectrum are suitable for efficient red-ox reactions.
Collapse
Affiliation(s)
- D Praveen Kumar
- Nano Catalysis and Solar Fuels Research Laboratory, Department of Materials Science & Nanotechnology, Yogi Vemana University, Vemanapuram, Kadapa 516003, Andhra Pradesh, India
| | - N Lakshmana Reddy
- Nano Catalysis and Solar Fuels Research Laboratory, Department of Materials Science & Nanotechnology, Yogi Vemana University, Vemanapuram, Kadapa 516003, Andhra Pradesh, India
| | - M Karthikeyan
- Nano Catalysis and Solar Fuels Research Laboratory, Department of Materials Science & Nanotechnology, Yogi Vemana University, Vemanapuram, Kadapa 516003, Andhra Pradesh, India
| | - N Chinnaiah
- Nano Catalysis and Solar Fuels Research Laboratory, Department of Materials Science & Nanotechnology, Yogi Vemana University, Vemanapuram, Kadapa 516003, Andhra Pradesh, India
| | - V Bramhaiah
- Nano Catalysis and Solar Fuels Research Laboratory, Department of Materials Science & Nanotechnology, Yogi Vemana University, Vemanapuram, Kadapa 516003, Andhra Pradesh, India
| | - V Durga Kumari
- Inorganic and Physical Chemistry Division, Indian Institute of Chemical Technology (CSIR-IICT), Hyderabad 500007, Telangana, India
| | - M V Shankar
- Nano Catalysis and Solar Fuels Research Laboratory, Department of Materials Science & Nanotechnology, Yogi Vemana University, Vemanapuram, Kadapa 516003, Andhra Pradesh, India.
| |
Collapse
|
17
|
Reddy BN, Rani CR, Reddy SM, Pathak M. An efficient and green La(OTf)3 catalyzed Petasis borono–Mannich reaction for the synthesis of tertiary amines. RESEARCH ON CHEMICAL INTERMEDIATES 2016. [DOI: 10.1007/s11164-016-2551-6] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
|
18
|
REDDY NLAKSHMANA, KUMAR DPRAVEEN, SHANKAR MV. Co-catalyst free Titanate Nanorods for improved Hydrogen production under solar light irradiation. J CHEM SCI 2016. [DOI: 10.1007/s12039-016-1061-9] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
|
19
|
Guerrera CA, Ryder TR. The Petasis Borono-Mannich Multicomponent Reaction. BORON REAGENTS IN SYNTHESIS 2016. [DOI: 10.1021/bk-2016-1236.ch009] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Affiliation(s)
- Cessandra A. Guerrera
- Department of Chemistry, Southern Connecticut State University, New Haven, Connecticut 06515, United States
| | - Todd R. Ryder
- Department of Chemistry, Southern Connecticut State University, New Haven, Connecticut 06515, United States
| |
Collapse
|
20
|
Kumar P, Griffiths K, Lymperopoulou S, Kostakis GE. Tetranuclear Zn2Ln2 coordination clusters as catalysts in the Petasis borono-Mannich multicomponent reaction. RSC Adv 2016. [DOI: 10.1039/c6ra17209a] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/14/2023] Open
Abstract
We report for the first time the efficiency of heteronuclear Zn/Ln coordination clusters (CCs) as catalysts for the multicomponent Mannich-type condensation that involves amines, aldehydes and boronic acids, known as the Petasis borono-Mannich (RBR) reaction.
Collapse
Affiliation(s)
- Prashant Kumar
- Department of Chemistry
- School of Life Sciences
- University of Sussex
- Brighton BN1 9QJ
- UK
| | - Kieran Griffiths
- Department of Chemistry
- School of Life Sciences
- University of Sussex
- Brighton BN1 9QJ
- UK
| | | | - George E. Kostakis
- Department of Chemistry
- School of Life Sciences
- University of Sussex
- Brighton BN1 9QJ
- UK
| |
Collapse
|