38453-87-1

Upstream product

• 589-87-7 1,4-bromoiodobenzene 
• 95-13-6 1-indene 
• 615-13-4 2-indanone 
• 38453-66-6 3-(4-bromo-benzyl)-3H-isobenzofuran-1-one 
• 766-96-1 4-bromo-1-ethynylbenzene 
• 1714-38-1 7-methoxy-1,3,5-cycloheptatriene 
• 1421374-33-5 7-((4-bromophenyl)ethynyl)cyclohepta-1,3,5-triene 
• 1122-91-4 4-bromo-benzaldehyde 
• 1370372-05-6 2-((4-bromophenyl)ethynyl)benzaldehyde 
• 1370372-11-4 1-((4-bromophenyl)ethynyl)-2-ethynylbenzene 
• 6630-33-7 ortho-bromobenzaldehyde 
• 38453-74-6 methyl 2-(4-bromostyryl)benzoate 
• 130818-31-4 (E)-2-(4-bromostyryl)benzoic acid 
• 106-37-6 1.4-dibromobenzene 

Downstream Products

• 79449-07-3 2-(p-cyanophenyl)indene 

Relevant academic research and scientific papers

4-benzo five-membered ring-phenyl ketoxime ester compound as well as preparation method and application thereof

The invention discloses a 4-benzo five-membered ring- phenyl ketoxime ester compound as well as a preparation method and application thereof. The invention relates to a 4-benzo five-membered ring-phenyl oxime ester derivative shown as a formula (I), a photocuring composition and a preparation method of the 4-benzo five-membered ring-phenyl ketoxime ester derivative shown as the formula (I). The 4-benzo five-membered ring-phenyl ketoxime ester derivative molecule represented by the formula (I) has the advantages of red shift of absorption wavelength, good photoinitiation efficiency, simple synthesis steps, and wide application prospect in the field of UV-Vis-LED excitable photocureable coating or ink industrialization.

CO extrusion in homogeneous gold catalysis: Reactivity of gold acyl species generated through water addition to gold vinylidenes

Herein, we describe a new gold-catalyzed decarbonylative indene synthesis. Synergistic σ,π-activation of diyne substrates leads to gold vinylidene intermediates, which upon addition of water are transformed into gold acyl species, a type of organogold compound hitherto only scarcely reported. The latter are shown to undergo extrusion of CO, an elementary step completely unknown for homogeneous gold catalysis. By tuning the electronic and steric properties of the starting diyne systems, this new reactivity could be exploited for the synthesis of indene derivatives in high yields.

Gold for the generation and control of fluxional barbaralyl cations

Fluxional molecules which rapidly pass back and forth between a large number of constitutional isomers through low-energy rearrangements have fascinated chemists owing to their role in the study of fundamental theoretical concepts[ 2] and their potential to adapt their chemical structures in response to their environment or to act as prototypical molecular transport systems. They represent a facet of systems chemistry that is relatively unexplored, in which a dynamic structural library can be contained within a single molecule. The 9-barbaralyl cation (1) is a hugely fluxional C9H9 + hydrocarbon that exists as a mixture of 181 400 degenerate forms which interconvert rapidly at temperatures as low as -135 °C-each carbon atom may exchange with every other carbon atom in the structure through a series of pericyclic reactions. Unlike the neutral homologues semibullvalene (2; two degenerate tautomers) and bullvalene (3; 1209600 degenerate tautomers), which are stable compounds under ambient conditions, 1 is highly reactive and undergoes irreversible rearrangement to 1,4-bishomotropylium cation (4) above -125 °C. Functionalized barbaralanes may be suitable candidates for switchable, fluxional molecules. However, the difficulty in handling these compounds coupled with the low-yielding, multistep syntheses and harsh reaction conditions (typically featuring strongly or super acidic media) employed in the generation of 1 and its derivatives have so far limited the extent to which the chemistry of this fascinating dynamic carbon skeleton has been explored.

Joining the rings: The preparation of 2- and 3-indenyl-triptycenes, and curious related processes

The indenyltriptycenes, 1 and 2, where the 3- or 2-indenyl, respectively, is attached at the 9-position of the triptycene, are attractive prototypes of molecular gearing systems that can also incorporate a brake. These molecules have been prepared from their respective indenylanthracenes, 3 and 4, by the [4 + 2] cycloaddition of benzyne to the anthracene fragment, and the rotational barriers about the indenyl-triptycenyl single bonds in 1 (12 kcal mol -1) and 2 (-1) have been measured. The precursor anthracenes, 3 and 4, were prepared by using palladium-catalysed coupling reactions. Unexpectedly, the Heck-type reaction of 9-bromoanthracene, 5, with indene leads to the formation of 3-indenylanthracene 3; moreover, this process is accompanied by a novel palladium-catalysed carbocyclisation reaction leading to the indenophenanthrylene 9. The addition of benzyne to 9-(3-indenyl)anthracene, 3, yields the corresponding indenyltriptycene, 1, and, surprisingly, the anthracenyl methano-bridged phenanthrene 16. It has been demonstrated that 2-arylindenes can act as 1,3-dienes in the [4 + 2] cycloadditions of benzyne. The products 2, 7a, 9 and 16 have been characterised by X-ray crystallography. The Royal Society of Chemistry.

A facile synthesis of 2-arylindenes by Pd-catalyzed direct arylation of indene with aryl iodides

A series of 2-arylindenes were prepared by the reaction of aryl iodides with indene in the presence of a catalytic amount of Pd(OAc)2.

Response of Acidity and Magnetic Rtesonance Properties to Aryl Substitution in Carbon Acids and Derived Carbanions: 2- and 3-Arylindenes

Substitution in the aryl ring of 2- and 3-arylindenes has been used to examine the acidity of these hydrocarbons and the charge density and ion pair structure of their anions.Acidities were measured for the 2-arylindenes both in pure Me2SO and in Me2SO-H2