Results 121 to 130 of about 12,432 (295)

Tandem RCM–Claisen Rearrangement–[2+2] Cycloaddition of O,O'-(But-2-en-1,4-diyl)-bridged Binaphthols

open access: yesMolecules, 2012
Attempted RCM of 2,2'-bis(allyloxy)-1,1'-binaphthyl resulted in a Claisen-type rearrangement of a postulated labile dioxacyclodecine proceeding at room temperature and followed by [2+2] cycloaddition.
Michael Abraham   +5 more
doaj   +1 more source

Lattice Coherency‐Driven (111)‐Oriented Wide Bandgap Perovskite Films

open access: yesAdvanced Energy Materials, EarlyView.
Methylammonium lead chloride (MAPbCl3)‐derived seed templates regulate wide‐bandgap perovskite crystallization through coupled thermodynamic and kinetic effects. Lattice‐coherent templating lowers the energy cost for (111) epilayer growth, while growth retardation controls crystallization kinetics, ultimately producing highly crystalline face‐up (111 ...
Yu‐Na Lee   +5 more
wiley   +1 more source

High‐Sublimation‐Temperature Additives for Efficient Perovskite Solar Cells via Single‐Source Evaporation

open access: yesAdvanced Energy Materials, EarlyView.
The introduction of high‐sublimation‐temperature additives during the mechanosynthesis of FAPbI3 powders enables the single‐source evaporation of phase‐pure, additive‐free FAPbI3 thin films of high optoelectronic quality. The additive‐engineered deposition process yields photovoltaic devices with stabilized efficiencies exceeding 18% for an active ...
Zongbao Zhang   +13 more
wiley   +1 more source

An Unexpected Formation of Spiro Isoxazoline-Dihydrofurane Compounds from Substituted Ketofurfuryl Alcohols

open access: yesMolecules
Oximation of substituted ketofurfuryl alcohols in the presence of hydroxylamine hydrochloride and pyridine in ethanol as solvent led to a new class of spiro derivatives presenting a 7-methylene-1,6-dioxa-2-azaspiro [4.4] nona-2,8-diene skeleton along ...
Claire Cuyamendous   +2 more
doaj   +1 more source

4-Benzyl-1,2,4-triazaspiro[4.5]dec-1-ene-3-thione

open access: yesIUCrData, 2016
In the title compound, C14H17N3S, the cyclohexane ring adopts a chair conformation. The dihedral angle between the triazole and phenyl ring is 77.2 (3)°.
Shaaban K. Mohamed   +5 more
doaj   +1 more source

Synthesis, Structure Elucidation and Antimicrobial Evaluation of some Novel Triazolo[3,4-b]thiadiazole and Triazolo[3,4-b]thiadiazine Derivatives [PDF]

open access: yes, 2009
Fused triazoles derivatives have been prepared from the reaction of the starting material 4 with some electrophilicreagents. The structures of all new compounds have beenestablished on the basis of elemental analysis and spectroscopicdata.
Al-Sehemi, Abdullah
core  

High‐Performance Noble‐Metal‐Free Perovskite Solar Cells Enabled by MoOX/Cr/Al Multilayer Electrodes

open access: yesAdvanced Energy Materials, EarlyView.
Cost‐effective perovskite solar cells (PSCs) are developed using a noble‐metal‐free MoOX/Cr/Al multilayer electrode. The devices achieve a power conversion efficiency (PCE) of 25.6%, competitive with that of Au‐based devices (26.3%), and a 25.5 cm2 mini‐module shows 21.3% PCE.
Wooyeon Kim   +7 more
wiley   +1 more source

Spiro-compounds. Part II. Ring Transformation in Spiro-compound from 4-Methylcyclohexanone. A New Synthesis of Cadalene.

open access: yes, 1936
Spiro-compounds. Part II. Ring Transformation in Spiro-compound from 4-Methylcyclohexanone. A New Synthesis of Cadalene.
openaire   +1 more source

Photochemical Rearrangement of 8- methyl Spiro [2.5] oct-7-en-4-one to 4-methyl Spiro [2.5] oct-4-en-6-one [PDF]

open access: yesJournal of Sciences, Islamic Republic of Iran, 1989
Irradiation of &methyl spiro [2.5] oct-7-en-4-one through its singlet excited state resulted in the formation of 4-methyl spirO [2.5] oct-4-en -6-one. We have used the cyclopropyl moiety in the molecule as a probe to study the operating mechanism in the
doaj  

Synthesis of spiro[isoindole-1,5’-isoxazolidin]-3(2H)-ones as potential inhibitors of the MDM2-p53 interaction

open access: yesBeilstein Journal of Organic Chemistry, 2016
A series of spiro[isoindole-1,5-isoxazolidin]-3(2H)-ones has been synthesized by 1,3-dipolar cycloaddition of N-benzylnitrone with isoindolin-3-methylene-1-ones.
Salvatore V. Giofrè   +10 more
doaj   +1 more source

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