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Boron-based compounds have been utilized as ligands within transition metal complexes for many decades. The diversity of such compounds in terms of varying functional groups is truly exceptional. Boron compounds are of high interest due to the great potential to modify the substituents around the boron center and to produce a broad range of structural motifs. The many different ways these compounds can coordinate or interact with transition metal centers is astonishing. Examples of transition metal complexes containing boron-based ligands include scorpionates, cluster-type borane- and carboranes, borates, and phosphine-stabilized borylene ligands. This Special Issue brings together a collection of articles focusing on recent developments in the aforementioned boron-based ligands. The articles reported in this book will provide the reader with an overview of the types of boron-based ligands which are currently being researched in groups around the world.

dodecaborate(6?) --- pincer --- hexanuclear compounds --- aggregation --- germanium --- ligand --- iridium --- ruthenium --- polyborate --- metallaborane --- boron-containing heterocycles --- soft scorpionate --- borohydride --- copper --- sulfur --- carborane --- zinc --- nido-carborane --- iron bis(dicarbollide) --- synthesis --- antimony --- borinane --- oxidoborate --- metallacarborane --- UV-Vis spectroscopy --- thiolato ligand --- dimethyloxonium derivatives --- scorpionate --- carboranylamidinate --- carbodiphosphorane --- self-assembly --- zinc(II) complex --- crystal structure --- cobalt bis(dicarbollide) --- NTA --- boron --- X-ray structure --- methoxy derivatives --- properties --- hexaborate(2?)

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This Special Issue on “Catalysts for Syngas Production”, included in the Catalysts open access journal, shows new research about the development of catalysts and catalytic routes for syngas production, and the optimization of the reaction conditions for the process. This issue includes ten articles about the different innovative processes for syngas production. Synthesis gas (or syngas) is a mixture of hydrogen and carbon monoxide, with different chemical composition and H2/CO molar ratios, depending on the feedstock and production technology used. Syngas may be obtained from alternative sources to oil, such as natural gas, coal, biomass, organic wastes, etc. Syngas is a very good intermediate for the production of high value compounds at the industrial scale, such as hydrogen, methanol, liquid fuels, and a wide range of chemicals. Accordingly, efforts should be made on the co-feeding of CO2 with syngas, as an alternative for reducing greenhouse gas emissions. In addition, more syngas will be required in the near future, in order to satisfy the demand for synfuels and high value chemicals.

x%Co-Ni/Ce-Al2O3 --- steam reforming --- regeneration --- thermal stability --- anti-coking ability --- carbon --- combined Co–Fe species --- deactivation --- hydrogen production --- methane decomposition --- Ni catalysts --- combustion method --- dry reforming of methane --- RWGS reaction --- improved stability --- CH4 --- CeO2 --- dry reforming --- MgO --- Ni --- TiO2 --- syngas production --- hydrogen sulfide --- carbon dioxide --- Ni-Mo sulfide semiconductor --- non-thermal plasma --- methane steam reforming --- bench scale --- effectiveness factor --- Sulfur tolerant water gas shift catalyst --- steam/gas ratio --- Mo–Co/alkali/Al2O3 catalyst --- catalyst deactivation --- syngas --- H2 production --- Hydrogen --- Low Temperature Steam Reforming --- Rh4(CO)12 cluster --- microemulsion synthesis --- CeZr oxide --- Zr oxide --- heterogeneous catalysis --- solar thermochemical --- iridium catalyst --- rhodium catalyst --- catalytic cracking --- ethylene --- carbon nanofilaments --- hydrogen --- n/a --- combined Co-Fe species --- Mo-Co/alkali/Al2O3 catalyst

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Boron, a metalloid with rich chemistry, continues to offer a diverse platform in designing novel catalysts and materials for applications in a variety of areas. This book, while celebrating Professor Todd Marder’s contributions to boron chemistry, on the occasion of his 65th birthday in November 2020, highlights and brings into focus some of the important discoveries in this field, through state-of-the-art reviews and research articles

1,1,1-tri(boryl)alkanes --- 1,2,3-tri(boryl)alkanes --- 1,1,2-tri(boryl)alkanes --- 1,1,2-tri(boryl)alkenes --- synthetic approaches --- synthetic applications --- dicarbollide --- ruthenium --- metallodrug --- kinase inhibitor --- closo-o-carborane --- nido-o-carborane --- intramolecular charge transfer --- deboronation --- color change --- boron --- π-conjugated materials --- opto-electronics --- tetracoordinated --- m-carborane --- electrophilic substitution --- coupling reaction --- organic branches --- Hirshfield Study --- 1,4-bis(trimethylsilyl)-1,4-diaza-2,5-cyclohexadienes --- salt-free reduction --- rotational barrier --- B=N bond --- immobilization of antibodies --- IL-10 --- magnetic nanoparticles --- pre-concentration of antigens --- saliva matrix --- TNF-α --- fluorosulfanyl group --- fluorinated ligands --- phosphines --- rhodium --- iridium --- conjugated hydrocarbon --- isoelectronic molecule --- electronic structure --- quantum chemistry --- singlet-triplet gap --- n/a

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In this Special Issue, recent advances in cross-coupling reactions are presented in the form of original research articles, reviews, and short communications. These contributions cover different topics in this area, including novel coupling reactions, reaction conditions, synthetic alternatives, metal ligands, and applications for new pharmaceutical compounds and organic materials. In particular, the reviews deal with methodologies such as the synthesis of diarylketones through palladium catalysis and the most relevant examples of Suzuki–Miyaura and Buchwald–Hartwig coupling reactions in the synthesis of bioactive compounds. The synthetic utility of cross-coupling reactions for the synthesis of medium-size rings and the utility of Stille and Suzuki coupling reactions for the synthesis of new molecular machines based on sterically hindered anthracenyl trypticenyl units are also summarized. The original research articles present the synthesis of 2-alkynylpyrrols by inverse Sonogashira coupling and the synthesis of indoles under oxidative dearomative cross-dehydrogenative conditions. The efficient combination of iridium-catalyzed C–H borylation of aryl halides with the Sonogashira coupling and a sequential iridium-catalyzed borylation of NH-free pyrroles followed by a Suzuki–Miyaura reaction are included. The synthesis of aryl propionic acids, a common structural motif in medicinal chemistry, and the synthesis of new organic dyes are also covered.

cross coupling --- dearomatization --- C-H functionalization --- indolin-3-ones --- dimerization and trimerization of indoles --- C–H borylation --- Sonogashira cross-coupling --- borylated aryl alkynes --- one-pot reaction --- restricted rotations --- M(CO)3 tripods --- molecular brakes and gears --- X-ray --- V-T NMR --- borylation --- Suzuki coupling --- NH-Free --- 5-aryl pyrrole-2-carboxylates --- iridium-catalyzed --- heteroaryl substituted pyrroles --- 2,3′-bipyrrole --- electrophilic haloacetylenes --- pyrroles --- ethynylpyrroles --- furans --- thiophenes --- pyrazoles --- Al2O3 --- transition-metal catalysis --- intramolecular cyclization --- medium-sized heterocycles --- C-H activation --- acylation --- palladium --- arenes --- heteroarenes --- indigo dyes --- DSSC --- synthesis --- spectroscopy --- Heck reaction --- styrene --- methoxycarbonylation --- profene --- cross-coupling reactions --- C-C bond forming reactions --- C-Heteroatom bond forming reactions --- clinical candidate --- DNA-encoded libraries --- cyclopeptides --- allosteric modulators --- PROTAC --- catalysis in water --- C–C cross-coupling --- Suzuki–Miyaura reaction --- sulfonated salan --- n/a --- C-H borylation --- 2,3'-bipyrrole --- C-C cross-coupling --- Suzuki-Miyaura reaction

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The Special Issue entitled “Remote Sensing in Vessel Detection and Navigation” comprises 15 articles on many topics related to remote sensing with navigational sensors. The sequence of articles included in this Special Issue is in line with the latest scientific trends. The latest developments in science, including artificial intelligence, were used. It can be said that navigation and vessel detection remain important and hot topics, and a lot of work will continue to be done worldwide. New techniques and methods for analyzing and extracting information from navigational sensors and data have been proposed and verified. Some of these will spark further research, and some are already mature and can be considered for industrial implementation and development.

autonomous navigation --- automatic radar plotting aid --- safe objects control --- game theory --- computer simulation --- Sentinel-2 --- multispectral --- temporal offsets --- ship --- aircraft --- velocity --- altitude --- parallax --- jet stream --- Unmanned Surface Vessel (USV) --- multi-Global Navigation Satellite System (GNSS) receiver --- bathymetric measurements --- cross track error (XTE) --- SSL --- six-degrees-of-freedom motion --- motion attitude model --- edge detection --- straight-line fitting --- visual saliency --- vessel detection --- video monitoring --- inland waterway --- real-time detection --- neural network --- target recognition --- HRRP --- residual structure --- loss function --- trajectory tracking --- unmanned surface vehicle --- navigation --- bathymetry --- hydrographic survey --- real-time communication --- maritime situational awareness --- ship detection --- Iridium --- on-board --- image processing --- flight campaign --- position estimation --- ranging mode --- single shore station --- AIS --- bag-of-words mechanism --- machine learning --- image analysis --- ship classification --- marine system --- river monitoring system --- feature extraction --- synthetic aperture radar (SAR) ship detection --- multi-stage rotational region based network (MSR2N) --- rotated anchor generation --- multi-stage rotational detection network (MSRDN) --- convolutional neural network (CNN) --- synthetic aperture radar (SAR) --- multiscale and small ship detection --- complex background --- false alarm --- farbon dioxide peaks --- midwave infrared --- FTIR --- adaptive stochastic resonance (ASR) --- matched intrawell response --- nonlinear filter --- line enhancer --- autonomous underwater vehicles (AUVs) --- target tracking --- group targets --- GLMB --- structure --- formation --- remote sensing