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• 24686-79-1 4,4'-dimethyl-thiobenzophenone S-oxide 
• 7385-10-6 9-(trimethylsilyl)fluorene 
• 80077-83-4 (9H-Fluoren-9-yl)-di-p-tolyl-methanol 
• 885-39-2 9-(dibromomethylene)-9H-fluorene 
• 5720-05-8 4-methylphenylboronic acid 
• 611-97-2 bis(p-methylphenyl)-methanone 
• 486-25-9 9-fluorenone 
• 5142-75-6 tri(p-tolyl)bismuth 
• 13029-09-9 2,2'-dibromobiphenyl 
• 1407489-32-0 1,1-bis(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)-2,2-bis(4-methylphenyl)ethene 
• 22370-71-4 4,4'-(2,2-dibromoethene-1,1-diyl)bis(methylbenzene) 
• 5565-85-5 5,5-dimethyl-5H-dibenzo[b,d]stannole 
• 189999-35-7 [1,1'-biphenyl]-2,2'-iodonium trifluoromethanesulfonate 
• 766-97-2 4-n-methylphenylacetylene 

Relevant academic research and scientific papers

Construction of a Luminogen Exhibiting High Contrast and Multicolored Emission Switching through Combination of a Bulky Conjugation Core and Tolyl Groups

Stimuli-responsive luminogens may find application in highly sensitive sensors, memories and security inks. However, few examples exhibiting both high contrast and multi-colored emission switching have been reported due to the absence of a molecular desig

Aggregation-Induced Emission Leading to White Light Emission in Diphenylbenzofulvene Derivatives

The search for a unique molecular system able to efficiently emit in the total visible range of the electromagnetic spectra, i. e., white light emission (WLE), is a topic of intense research. We here show that aggregates formed by diphenylbenzofulvene (DP

α-Bromoacrylic Acids as C1 Insertion Units for Palladium-Catalyzed Decarboxylative Synthesis of Diverse Dibenzofulvenes

Herein α-bromoacrylic acids have been employed as C1 insertion units to achieve the palladium-catalyzed [4 + 1] annulation of 2-iodobiphenyls, which provides an efficient platform for the construction of diverse dibenzofulvenes. This protocol enables the formation of double C(aryl)-C(vinyl) bonds via a C(vinyl)-Br bond cleavage and decarboxylation. It is particularly noteworthy that the method features a broad substrate scope, and various interesting frameworks, such as bridged ring, fused (hetero)aromatic ring, and divinylbenzene, can be successfully incorporated into the products.

Three-component Pd/Cu-catalyzed cascade reactions of cyclic iodoniums, alkynes, and boronic acids: An approach to methylidenefluorenes

Linear diaryliodonium salts are widely used as arylating reagents for C-C and C-X bond formation. Meanwhile, synthetic applications of cyclic iodoniums are relatively rare although they offer the opportunity to set up reaction cascades. We demonstrate an atom and step economical three-component reaction involving cyclic diphenyleneiodoniums, alkynes, and boronic acids, resulting in the construction of methylidenefluorenes in a single operation. Our route enables facile access to both symmetrical and unsymmetrical methylidenefluorene derivatives, compounds that have attracted interest due to their optical properties.

New synthesis of dibenzofulvenes by palladium-catalyzed double cross-coupling reactions

Palladium-catalyzed double cross-coupling reactions of 1,1-bis(pinacolato) borylalk-1-enes with 2,2′-dibromobiaryls and of 9-stannafluorenes with 1,1-dibromoalk-1-enes have been demonstrated to serve as new synthetic methods for dibenzofulvenes.

Palladium catalyzed atom-economic synthesis of functionalized 9-(diarylmethylene)-9H-fluorenes using triarylbismuths in one-pot bis-coupling process

An efficient palladium catalyzed atom-economic synthesis of functionalized 9-(diarylmethylene)-9H-fluorenes has been accomplished in one-pot bis-coupling process using triarylbismuths as organometallic reagents. These bis-couplings in 1 hour short reactio

A double Suzuki approach for synthesis of substituted diarylmethylidenefluorenes

A convenient synthesis of substituted diarylmethylidenefluorene derivatives, using a double Suzuki reaction, is reported. Georg Thieme Verlag Stuttgart.

Dications of fluorenylidenes. Relationship between electrochemical oxidation potentials and antiaromaticity in diphenyl-substituted fluorenyl cations

The antiaromaticity of a series of dications of p-substituted diphenylmethylidene fluorenes was explored using three criteria attributed to aromaticity/antiaromaticity. The relative stability of the dications (energetic criterion) was measured via the red

Substituent Effects on Electron Spin Distribution and Conformation of Radical Ions obtained from 9-Diphenylmethylenefluorenes

Nine new substituted 9-diphenylmethylenefluorenes were synthetized.The reductions of the unsubstituted hydrocarbon and eleven substituted derivatives were studied by cyclic voltammetry in dimethylformamide solution.E.s.r. and ENDOR spectra of the radical anions obtained by reduction with alkali metal in tetrahydrofuran were recorded.The electron spin distribution as obtained from experiment was compared with the results of Hueckel-McLachlan calculations.The conformations of the radical anions were determined from the spectra.The ratio of electron spin densities in the fluorene part of the alkene and in the diphenylmethylene group obeys a linear Hammett correlation.A similar study was performed for the radical cations of six of the twelve alkenes.

Preparation of sulfines by alkylidenation of sulfur dioxide using α-silyl carbanions

The synthesis of sulfines 4 from a series of active methylene compounds is described.Deprotonation, followed by silylation, gives the trimethylsilyl compounds 2.Subsequent deprotonation to α-silyl carbanions and treatment with an excess of sulfur dioxide