bluuebunny/crossref_metadata_2025_split huggingface dataset:
Bioactive Sesquiterpenoids and Diterpenoids from the Liverwort Bazzania albifolia
Authors: Liu Na , Guo Dong‐Xiao , Wang Shu‐Qi , Wang Yan‐Yan , Zhang Li , Li Gang , Lou Hong‐Xiang 
Published: October 2012

AbstractOne undescribed 6,7‐secofusicoccane‐type diterpene, albifolione (1), and one new aromadendrane‐type sesquiterpenoid ketone, methyl 2‐oxoaromadendra‐1(10),3‐dien‐12‐oate (2), along with four known compounds, δ‐cuparenol (3), fusicoauritone (4), chiloscyphenols A and B (5 and 6, resp.), were isolated from the liverwort Bazzania albifolia Horik. The structures and relative configurations of 1 and 2 were established unequivocally on the basis of spectroscopic data analysis. Preliminary bioassay revealed that compound 5 showed quite strong cytotoxicity against the human tumor cell line MCF‐7, with an IC50 value of 5.6 μM.
2‐Hydroxynaphthalene‐1‐carbaldehyde‐ and 2‐(Aminomethyl)pyridine‐Based Schiff Base CuII Complexes for DNA Binding and Cleavage
Authors: Reddy Pulimamidi Rabindra , Shilpa Addla 
Published: October 2012

AbstractThree mononuclear CuII complexes, [CuCl(naph‐pa)] (1), [Cu(bipy)(naph‐pa)]Cl (2), and [Cu(naph‐pa)(phen)]Cl (3) ((naph‐pa)=Schiff base derived from the condensation of 2‐hydroxynaphthalene‐1‐carbaldehyde and 2‐picolylamine (=2‐(aminomethyl)pyridine), bipy=2,2′‐bypiridine, and phen=1,10‐phenanthroline) were synthesized and characterized. Complex 1 exhibits square‐planar geometry, and 2 and 3 exhibit square pyramidal geometry, where Schiff base and bipy/phen act as NNO and as NN donor ligands, respectively. CT (Calf thymus)‐DNA‐binding studies revealed that the complexes bind through intercalative mode and show good binding propensity (intrinsic binding constant Kb: 0.98×105, 2.22×105, and 2.67×105 M−1 for 1–3, resp.). The oxidative and hydrolytic DNA‐cleavage activity of these complexes has been studied by gel electrophoresis: all the complexes displayed chemical nuclease activity in the presence and absence of H2O2. From the kinetic experiments, hydrolytic DNA cleavage rate constants were determined as 2.48, 3.32, and 4.10 h−1 for 1–3, respectively. It amounts to (0.68–1.14)×108‐fold rate enhancement compared to non‐catalyzed DNA cleavage, which is impressive. The complexes display binding and cleavage propensity to DNA in the order of 3>2>1.
Small Organic Solutes in Sticky Droplets from Orb Webs of the SpiderZygiella atrica(Araneae; Araneidae):β‐Alaninamide Is a Novel and Abundant Component
Authors: Townley Mark A. , Pu Qinglin , Zercher Charles K. , Neefus Christopher D. , Tillinghast Edward K. 
Published: October 2012

AbstractIn northeastern North America,Zygiella atricaoften build their orb webs near the ocean. We analyzed individual field‐builtZ. atricawebs to determine if organic low‐molecular‐mass solutes (LMM) in their sticky droplets showed any unusual features not previously seen in orb webs of other species living in less salty environments. While two of the three most abundant organic LMM (putrescine (butane‐1,4‐diamine) and GABamide (4‐aminobutanamide)) are already well‐known from webs of inland spiders, the third major LMM,β‐alaninamide (3‐aminopropanamide), a homolog of GABamide, has not been detected in sticky droplets from any other araneoid spiders (27 species). It remains to be established, however, whether or not use ofβ‐alaninamide is related to proximity to saltwater. We observed variability in organic LMM composition inZ. atricawebs that appeared to be influenced more by an undetermined factor associated with different collecting locations and/or collection dates than by different genders or instars. Shifts in composition when adult females were transferred from the field to the laboratory were also observed. Structural similarities and inverse correlations amongβ‐alaninamide, GABamide, andN‐acetylputrescine suggest that they may form a series of LMM fulfilling essentially the same, as yet unknown, role in the webs of those species in which they occur.
High Diversity of Indigenous Populations of Dalmatian Sage (Salvia officinalis L.) in Essential‐Oil Composition
Authors: Jug‐Dujaković Marija , Ristić Mihailo , Pljevljakušić Dejan , Dajić‐Stevanović Zora , Liber Zlatko , Hančević Katarina , Radić Tomislav , Šatović Zlatko 
Published: October 2012

AbstractEssential oils of 25 indigenous populations of Dalmatian sage (Salvia officinalis L.) that represent nearly half of native distribution area of the species were analyzed. Plantlets collected from wild populations were grown in the same field under the same environmental conditions and then sampled for essential‐oil analysis. The yield of essential oil ranged from 1.93 to 3.70% with average of 2.83%. Among the 62 compounds detected, eight (cis‐thujone, camphor, trans‐thujone, 1,8‐cineole, β‐pinene, camphene, borneol, and bornyl acetate) formed 78.13–87.33% of essential oils of individual populations. Strong positive correlations were observed between camphor and β‐pinene, β‐pinene and borneol, as well as between borneol and bornyl acetate. The strongest negative correlation was detected between camphor and trans‐thujone. Principal component analysis (PCA) on the basis of eight main compounds showed that first main component separated populations with high thujone content, from those rich in camphor, while the second component separated populations rich in cis‐thujone from those rich in trans‐thujone. Cluster analysis (CA) led to the identification of three chemotypes of S. officinalis populations: cis‐thujone; trans‐tujone, and camphor/β‐pinene/borneol/bornyl acetate. We propose that differences in essential oils of 25 populations are mostly genetically controlled, since potential environmental factors were controlled in this study.
Chemical Composition of Hypericum rumeliacumBoiss. Essential Oil. A New Chemotype of This Pharmacologically Valuable Species?
Authors: Radulović Niko S. , Blagojević Polina D. 
Published: October 2012

AbstractAnalysis by GC and GC/MS of the essential‐oil samples obtained from dry above‐ground parts of Hypericum rumeliacum Boiss. (collected in the flowering and fruit‐forming vegetative stages) allowed the identification of 212 components in total, comprising ≥97.8% of the total oil composition. In the flowering phase, the major identified volatile compounds were undecane (6.6%), dodecanal (10.8%), and germacrene D (14.1%), whereas α‐pinene (7.3%), β‐pinene (26.1%), (Z)‐β‐ocimene (8.5%), (E)‐β‐ocimene (10.2%), bicyclogermacrene (7.7%), and germacrene D (15.1%) were dominant in the fruit‐forming phase. Some of the minor constituents found in the studied oil samples (e.g., a homologous series of four 6‐alkyl‐5,6‐dihydro‐2H‐pyran‐2‐ones, i.e., massoia dodeca‐, trideca‐, tetradeca‐, and hexadecalactones) have a restricted occurrence in the Plant Kingdom, and their presence in Hypericum L. spp. has not been previously reported. The chemical compositions of the herein studied additional 34 oils obtained from selected Hypericum taxa were compared using multivariate statistical analysis (agglomerative hierarchical cluster analysis and principal component analysis). The results of these statistical analyses could not be used to either confirm or discard the existence of different H. rumeliacum chemotypes. However, they have implied that the volatile profile of this plant species is determined by the stage of its phenological development.
Water‐Soluble Cationic Derivatives of Indirubin, the Active Anticancer Component from Indigo naturalis
Authors: Ginzinger Werner , Egger Alexander , Mühlgassner Gerhard , Arion Vladimir B. , Jakupec Michael A. , Galanski Mathea Sophia , Berger Walter , Keppler Bernhard K. 
Published: October 2012

AbstractTo overcome the problem of poor aqueous solubility and bioavailability of indirubin‐3‐oximes, the compounds were modified by attaching a quaternary ammonium group at the oxime moiety. Exploring the prodrug concept, an oxime ester with acetyl‐l‐carnitine was prepared, and the rate of its hydrolysis was investigated to assess its suitability for clinical administration. In addition, the cytotoxic potency of new stable oxime ethers with a choline moiety and their influence on the cell cycle were tested in human cancer cell lines.
Dye‐Sensitized Solar Cells Based on a Donor–Acceptor System with a Pyridine Cation as an Electron‐Withdrawing Anchoring Group
Authors: Cheng Ming , Yang Xichuan , Li Jiajia , Chen Cheng , Zhao Jianghua , Wang Yu , Sun Licheng 
Published: October 2012

AbstractNew hemicyanine dyes (CM101, CM102, CM103, and CM104) in which tetrahydroquinoline derivatives are used as electron donors and N‐(carboxymethyl)‐pyridinium is used as an electron acceptor and anchoring group were designed and synthesized for dye‐sensitized solar cells (DSSCs). Compared with corresponding dyes that have cyanoacetic acid as the acceptor, N‐(carboxymethyl)‐pyridinium has a stronger electron‐withdrawing ability, which causes the absorption maximum of dyes to be redshifted. The photovoltaic performance of the DSSCs based on dyes CM101–CM104 markedly depends on the molecular structures of the dyes in terms of the n‐hexyl chains and methoxyl. The device sensitized by dye CM104 achieved the best conversion efficiency of 7.0 % (Jsc=13.4 mA cm−2, Voc=704 mV, FF=74.8 %) under AM 1.5 irradiation (100 mW cm−2). In contrast, the device sensitized by reference dye CMR104 with the same donor but the cyanoacetic acid as the acceptor gave an efficiency of 3.4 % (Jsc=6.2 mA cm−2, Voc=730 mV, FF=74.8 %). Under the same conditions, the cell fabricated with N719 sensitized porous TiO2 exhibited an efficiency of 7.9 % (Jsc=15.4 mA cm−2, Voc=723 mV, FF=72.3 %). The dyes CM101–CM104 show a broader spectral response compared with the reference dyes CMR101–CMR104 and have high IPCE exceeding 90 % from 450 to 580 nm. Considering the reflection of sunlight, the photoelectric conversion efficiency could be almost 100 % during this region.
Encapsulation of Luminescent Homoleptic [Ru(dpp)3]2+‐Type Chromophores within an Amphiphilic Dendritic Environment
Authors: Hahn Uwe , Luelf Henning , Winkler Henrik D. F. , Schalley Christoph A. , Vögtle Fritz , De Cola Luisa 
Published: October 2012

AbstractA new series of homoleptic metallodendrimers has been synthesized through ruthenium‐metal complexation by dendritically modified bathophenanthroline ligands. The presence of hydrophilic oligo(ethylene glycol) groups on the surface of the monodisperse metal complexes enabled the solubilization of all of the fractal species in a wide range of solvents, including water. The specific properties of all of these compounds have been systematically investigated by using photophysical techniques as a function of the generation number. Accordingly, the encapsulation of the highly luminescent [Ru(dpp)3]2+‐type (dpp=4,7‐diphenyl‐1,10‐phenanthroline) core unit within a dendritic microenvironment creates a powerful means to shield the center from dioxygen quenching. This shielding effect, as exerted on the phosphorescent ruthenium‐derived center, is reflected by enhanced emission intensities and extended excited‐state lifetimes that are close to the highest values reported so far, even in an air‐equilibrated aqueous medium. Interestingly, when inspecting the largest dendritic assembly, that is, the third‐generation assembly, significant drops in emission quantum yields and lifetimes are observed. This anomalous behavior has been attributed to the folding of the branches towards the luminescent core.
Electroactive Tetrathiafulvalenyl‐1,2,3‐triazoles by Click Chemistry: Cu‐ versus Ru‐Catalyzed Azide–Alkyne Cycloaddition Isomers
Authors: Biet Thomas , Cauchy Thomas , Avarvari Narcis 
Published: October 2012

AbstractTwo series of 4‐ and 5‐tetrathiafulvalenyl‐1,2,3‐triazoles, as multifunctional ligands and precursors for molecular materials, have been synthesized by copper‐ or ruthenium‐based “click” chemistry. The solid‐state structures of three ligands and two CuII complexes were determined. Large differences in the electron‐donating properties between the 1,4‐ and 1,5‐isomers were evidenced by cyclic voltammetry. Theoretical calculations support this observation and allow the assignment of the electronic transitions observed in UV/Vis spectra of the ligands.
Carbene‐Stabilized Phosphenium Oxides and Sulfides
Authors: Maaliki Carine , Lepetit Christine , Duhayon Carine , Canac Yves , Chauvin Remi 
Published: October 2012

AbstractCarbene→chalcogenophosphenium adducts, which correspond to an intermolecular stabilization mode of the so far elusive, free oxo‐ and thiooxophosphenium species [R2P+=X] (X=O, S) by imidazolylidene (NHC) and diaminocyclopropenylidene (BAC) donors, have been isolated and fully characterized. The dative character of the R2C:→P+(X)Ph2 bond was confirmed experimentally by nucleophilic displacement of the carbene donor with a chloride ion and by an exchange reaction of the NHC ligand of the NHC:→P+(O)Ph2 adduct with an independently prepared BAC ligand, thereby giving the BAC:→P+(O)Ph2 adduct. This dative character was further characterized by the DFT‐calculated preference of carbene→chalcogenophosphenium systems for a heterolytic dissociation mode over a homolytic one.
Dipole Field Guided Orientated Attachment of Nanocrystals to Twin‐Brush ZnO Mesocrystals
Authors: Liu Ming‐Han , Tseng Yao‐Hung , Greer Heather F. , Zhou Wuzong , Mou Chung‐Yuan 
Published: October 2012

AbstractMesocrystals of ZnO were synthesized hydrothermally by using gum arabic as a structure‐directing agent. Their hierarchical structure has a unique twin‐brush form consisting of vertically aligned nanorods in a single‐crystal‐like porous form. The formation mechanism of the twin‐brush ZnO was investigated by quenching a series of samples at different times and examining them by TEM, SEM, and XRD. The alignment of ZnO crystal units can be modulated by adding simple salts such as KCl to change the units from nanorods to nanoplates. This can be explained by screening the dipolar force of the polar crystal. Local cathodoluminescence of twin‐brush ZnO was used to follow the local structure changes.
Singlet Oxygen Photo‐Oxygenation in Water/Pluronic F‐127 Hydrogels: Increased Reaction Efficiency Coupled with a Switch in Regioselectivity
Authors: Griesbeck Axel G. , Uhlig Johannes , Sottmann Thomas , Belkoura Lhoussaine , Strey Reinhard 
Published: October 2012

AbstractPluronic F‐127 hydrogels are highly efficient microenvironments for photochemical reactions, as demonstrated for singlet oxygen reactions of monoalkenes. Nonpolar substrates are localized in the nanosized polymer compartment, which can be visualized by neutron scattering. The efficiency of 1O2 reactions is strongly increased for tiglate derivatives and the regioselectivity of the ene reaction of trisubstituted alkenes is completely switched in comparison with solution phase and inverted in comparison with intrazeolite photo‐oxygenations.
A Biomimetic Pathway for Vanadium‐Catalyzed Aerobic Oxidation of Alcohols: Evidence for a Base‐Assisted Dehydrogenation Mechanism
Authors: Wigington Bethany N. , Drummond Michael L. , Cundari Thomas R. , Thorn David L. , Hanson Susan K. , Scott Susannah L. 
Published: October 2012

AbstractThe first step in the catalytic oxidation of alcohols by molecular O2, mediated by homogeneous vanadium(V) complexes [LVV(O)(OR)], is ligand exchange. The unusual mechanism of the subsequent intramolecular oxidation of benzyl alcoholate ligands in the 8‐hydroxyquinolinato (HQ) complexes [(HQ)2VV(O)(OCH2C6H4‐p‐X)] involves intermolecular deprotonation. In the presence of triethylamine, complex 3 (X=H) reacts within an hour at room temperature to generate, quantitatively, [(HQ)2VIV(O)], benzaldehyde (0.5 equivalents), and benzyl alcohol (0.5 equivalents). The base plays a key role in the reaction: in its absence, less than 12 % conversion was observed after 72 hours. The reaction is first order in both 3 and NEt3, with activation parameters ΔH≠=(28±4) kJ mol−1 and ΔS≠=(−169±4) J K−1 mol−1. A large kinetic isotope effect, 10.2±0.6, was observed when the benzylic hydrogen atoms were replaced by deuterium atoms. The effect of the para substituent of the benzyl alcoholate ligand on the reaction rate was investigated using a Hammett plot, which was constructed using σp. From the slope of the Hammett plot, ρ=+(1.34±0.18), a significant buildup of negative charge on the benzylic carbon atom in the transition state is inferred. These experimental findings, in combination with computational studies, support an unusual bimolecular pathway for the intramolecular redox reaction, in which the rate‐limiting step is deprotonation at the benzylic position. This mechanism, that is, base‐assisted dehydrogenation (BAD), represents a biomimetic pathway for transition‐metal‐mediated alcohol oxidations, differing from the previously identified hydride‐transfer and radical pathways. It suggests a new way to enhance the activity and selectivity of vanadium catalysts in a wide range of redox reactions, through control of the outer coordination sphere.
ChemInform Abstract: Nd4.67Ru3Mg8.83 — A Magnesium‐Rich Compound with Ru@Mg4Nd4 Square Antiprisms and Mg@Mg8 Cubes as Basic Building Units.
Authors: Linsinger Stefan , Rodewald Ute Ch. , Poettgen Rainer 
Published: October 2012

AbstractThe Mg‐rich title compound is prepared from the elements (Ta ampule, 1473 K, 8 h followed by annealing at 673 K for 96 h) and characterized by powder and single crystal XRD.
ChemInform Abstract: Sulfides with Strong Nonlinear Optical Activity and Thermochromism: ACd4Ga5S12 (A: K, Rb, Cs).
Authors: Lin Hua , Zhou Liu‐Jiang , Chen Ling 
Published: October 2012

AbstractThe title compounds are prepared in high yields by reaction of Cd, Ga, and S in a molar ratio of 4:5:12 and a slight excess of MCl (M: K, Rb, Cs) as reactive flux (1273 K, 7 d).
ChemInform Abstract: Origin of the Room‐Temperature Ferromagnetism in Sr3YCo4O10+δ (0.5 < δ < 1.0): Formation of Ferromagnetic Spin Bags in the Oxygen‐Rich Perovskite Layers.
Authors: Bettis Jerry L. Jr. , Xiang Hongjun , Whangbo Myung‐Hwan 
Published: October 2012

AbstractThe title compound is characterized by DFT electronic structure calculations.
ChemInform Abstract: New Iron‐Based Mixed‐Polyanion Cathodes for Lithium and Sodium Rechargeable Batteries: Combined First Principles Calculations and Experimental Study.
Authors: Kang Kisuk , et al. et al. 
Published: October 2012

AbstractCompounds (III) and (VI) crystallize in the orthorhombic space group Pn21a (powder XRD and neutron diffraction) and contain three‐dimensional Na/Li paths supported by P2O7 pillars in the crystal.
ChemInform Abstract: (C8H22N4Zn) 2Ge7O14(OH)F3: A One‐Dimensional Zinc Germanate Containing Hollow Columns with an 18‐Membered Window.
Authors: Nguyen Quang Bac , Li Kwang‐Hwa 
Published: October 2012

AbstractTitle compound (III) is characterized by single crystal XRD, solid state 19F NMR, and IR spectroscopy.
ChemInform Abstract: Nitrate‐Bridged “Pseudo‐Double‐Propeller”‐Type Lanthanide(III)—Copper(II) Heterometallic Clusters: Syntheses, Structures, and Magnetic Properties.
Authors: Chaudhari Abhijeet K. , Joarder Biplab , Riviere Eric , Rogez Guillaume , Ghosh Sujit K. 
Published: October 2012

AbstractCompounds (III) are characterized by single crystal XRD and magnetic measurements.
ChemInform Abstract: Rapid Preparation of Cycloheptane Ring from 1,2‐Diketone and Bis(iodozincio)methane via Oxy‐Cope Rearrangement Using Microflow System.
Authors: Haraguchi Ryosuke , Takada Yoshiaki , Matsubara Seijiro 
Published: October 2012

AbstractThe title reaction is studied as both classical one‐pot reaction and in a microflow system.
ChemInform Abstract: Nucleophilic Pentafluorophenylation of Nitroalkenes.
Authors: Kondratyev Nikolay S. , Zemtsov Artem A. , Levin Vitalij V. , Dilman Alexander D. , Struchkova Marina I. 
Published: October 2012

AbstractOptimized conditions A) have to be changed in the case of aliphatic nitro compounds.
ChemInform Abstract: Nano‐TiO2: An Efficient and Reusable Heterogeneous Catalyst for Ring Opening of Epoxides under Solvent‐Free Conditions.
Authors: Chen Xi'an , Wu Huayue , Wang Shun , Huang Shaoming 
Published: October 2012

AbstractThe reaction is remarkably stereo‐ and regioselective and the catalytic activity of titanium dioxide strongly depends on particle size and surface area.
ChemInform Abstract: Biomimetic Flavin‐Catalyzed Aldehyde Oxidation.
Authors: Murray Alexander T. , Matton Pascal , Fairhurst Nathan W. G. , John Matthew P. , Carbery David R. 
Published: October 2012

AbstractThe presence of a strong electron‐donating group in the ortho‐ or para‐position [cf.(IIb) and (IId)] leads to formation of phenol by‐products, consistent with a competitive Dakin oxidation.
ChemInform Abstract: Palladium‐Catalyzed N‐Monoarylation of Amidines and a One‐Pot Synthesis of Quinazoline Derivatives.
Authors: McGowan Meredeth A. , McAvoy Camille Z. , Buchwald Stephen L. 
Published: October 2012

AbstractThe particle size of Cs2CO3 is crucial: whereas the commercial product causes no reaction or very low yields, the finely grounded substance proves to be successful.
ChemInform Abstract: Synthesis and Properties of Novel i‐ and g‐Line Sensitive Photoacid Generators Based on 9‐Fluorenone Derivatives with Aryl—Ethynyl Units.
Authors: Kodama Shintaro , Okamura Haruyuki , Shirai Masamitsu 
Published: October 2012

AbstractThis is the first example of a photoacid generator (PAG) synthesis via the introduction of arylethynyl units into the chromophore.
ChemInform Abstract: Efficient AgOTf or Ph3PAuCl—AgSbF6 Catalyzed Cyclization of 1‐Hydroxy‐2‐alkynylallylphosphonates/2‐alkynylallyl Alcohols to 2‐Furylphosphonates/2,3,5‐Trisubstituted Furans.
Authors: Kotikalapudi Ramesh , Swamy K. C. Kumara 
Published: October 2012

AbstractOptimized reaction conditions are developed for the cyclization of 2‐alkynylallyl alcohols to give highly substituted furanone derivatives.
ChemInform Abstract: A Convenient Access to γ‐Lactones from O‐Allyl‐α‐Bromoesters Using a One‐Pot Ionic—Radical—Ionic Sequence.
Authors: Beneteau Romain , Lebreton Jacques , Denes Fabrice 
Published: October 2012

AbstractIn continuation of recently published studies on the cyclization of in situ generated α‐bromo aluminum acetals, an efficient protocol for preparation of γ‐lactones is presented.
ChemInform Abstract: A Novel Convergent Method for the Synthesis of α‐Acyl‐γ‐hydroxylactams and Its Application in the Total Synthesis of PI‐090 and 091.
Authors: Uchiro Hiromi , Shionozaki Nobuhiro , Kobayakawa Yu , Nakagawa Hiroko , Makino Kimiko 
Published: October 2012

AbstractThe aldol reaction of N‐Boc‐protected γ‐hydroxylactams (I) provides access towards title α‐acyl‐γ‐hydroxylactams (III).
ChemInform Abstract: Synthesis, Cytotoxic Properties and Tubulin Polymerization Inhibitory Activity of Novel 2‐Pyrazoline Derivatives.
Authors: Abdel‐Aziz Mohamed , Aly Omar M. , Khan Sabine S. , Mukherjee Kamalika , Bane Susan 
Published: October 2012

AbstractA series of novel 3,5‐diarylpyrazoline derivatives (III) are synthesized and screened for their anticancer activity in a tubulin polymerization inhibitory assay.
ChemInform Abstract: Regioselective Synthesis and Antimicrobial Studies of Ester Linked 1,4‐Disubstituted 1,2,3‐Bistriazoles.
Authors: Lal Kashmiri , Kumar Ashwani , Pavan M. S. , Kaushik C. P. 
Published: October 2012

AbstractThe title compounds (III) are synthesized via click chemistry by Cu‐catalyzed cycloaddition of various bisalkynes with azides.
ChemInform Abstract: Hypervalent Iodine(V) Mediated Mild and Convenient Synthesis of Substituted 2‐Amino‐1,3,4‐oxadiazoles.
Authors: Prabhu Girish , Sureshbabu V. V. 
Published: October 2012

AbstractA convenient one‐pot two‐step sequence allows the synthesis of the title compounds (III) by reaction of acylhydrazides with isothiocyanates and subsequent IBX‐mediated cyclodesulfurization of the resulting intermediate acylthiosemicarbazides.