16274-88-7

Upstream product

• 23592-89-4 1-(2-methylphenyl)-3-phenyl-2-propanone 
• 615-13-4 2-indanone 
• 6921-34-2 benzylmagnesium chloride 
• 100-39-0 benzyl bromide 

Downstream Products

• 14669-30-8 [2-(2-Benzyl-3H-inden-1-yl)-ethyl]-diethyl-amine 
• 47292-44-4 [3-(2-Benzyl-3H-inden-1-yl)-2-methyl-propyl]-dimethyl-amine 
• 14715-16-3 [3-(2-Benzyl-3H-inden-1-yl)-propyl]-dimethyl-amine 
• 14715-14-1 [2-(2-Benzyl-3H-inden-1-yl)-propyl]-dimethyl-amine 
• 14715-12-9 2-Benzyl-3-(2-dimethylaminoethyl)-indene 

Relevant academic research and scientific papers

Synthesis and characterization of new bis(2-R-indenyl) zirconium dichloride complexes for the olefin polymerization

A series of 2-alkylindene(2-RInd; R=Me, i-Pr, n-Bu, Bzl, Cy, t-Bu) were prepared by nucleophilic addition of the corresponding alkyl anions to 2-indanone in the presence (or absence) of LaCl3. With these 2-alkylindenes, bis(2-alkylindenyl)zirconium dichloride complexes were synthesized to investigate the effects of alkyl substituents at 2-position of indene on the rotational conversion rate between rotamers (racemic and meso) and the catalytic activities toward olefin polymerization. Analysis of NMR spectra could line up the electron donating abilities and steric bulkiness of alkyl substituents in order and variable temperature NMR analysis (from 298 to 193 K) proved that these alkyls could not freeze free rotation of indenyl ligands. These complexes showed catalytic activities toward ethylene and propylene polymerization and the variation of catalytic activities(PE, Me〉Cy〉i-Pr〉Bzl〉n-Bu; PP, Me〉n-Bu〉i-Pr〉Cy〉Bzl), molecular weights(PE, n-Bu〉Cy〉i-Pr〉Me〉Bzl; PP, n-Bu〉Me〉Cy〉i-Pr〉Bzl), and polydispersities(PE, 2.80-5.05; PP, 2.23-3.30) were rationalized with steric, electronic, and structural factors. Steric bulkiness of substituents played an important role in the propylene polymerization but relative importance of these factors were different in the ethylene polymerization.

Dissymmetric ansa zirconocene complexes with di- and trisubstituted indenyl ligands as catalysts for homogeneous ethylene homo- and ethylene/1-hexene copolymerization reactions

Different routes for the synthesis of 1,2- and 1,2,3-substituted indene derivatives are described. Representative substituents are: Me, Ph, PhCH2, PhCH2CH2, PhCH2CH2CH2, CH2CH?=?CH2. Subsequent deprotonation of these substituted indenes and reaction with indenyl zirconium trichloride gave the corresponding dissymmetric bis(indenyl) zirconium complexes. After activation with methylaluminoxane (MAO) these complexes show high activities both in ethylene homopolymerisation and ethylene/1-hexene copolymerisation. The rate of comonomer incorporation can reach 33.3% (15/MAO). The copolymers exhibit lower melting points than the homopolymers and their crystallinities α are lower compared with the homopolymers.

Porous polymeric coordination compounds

The present invention describes three-dimensional porous coordination compounds, a method of making the compounds, and a method of using the compounds to contain reactants in a reaction, said compounds characterized by a plurality of sheets comprising a two-dimensional array of repeating structural units comprising at least one transition metal, one polyfunctional ligand and one exodentate ligand wherein: (1) at least one binding member of each said polyfunctional ligand is coordinated to transition metal atoms in two different repeating structural units within one sheet; (2) said binding sites of each exodentate bridging ligand are coordinated to transition metal atoms in a each of two adjacent sheets, and (3) the ligands of the three-dimensional polymeric compound define channels and pores of molecular size throughout the structure of the compound.

Unbridged metallocene dichloride complexes with mono-substituted indenyl ligands and their application for the polymerization of propene

The synthesis of unbridged metallocene dichloride complexes of the type Ind′2ZrCl2 (Ind′ = 2-alkyl- or arylalkyl-substituted indenyl) is described. The complexes are characterized by 1H- and 13C-NMR spectroscopy and mass spectrometry. After activation with methylalumoxane these complexes can be used for propene polymerization; they produce block copolymers consisting of alternating isotactic and atactic blocks. The polymerization results and the polymer properties are presented. The influence of the catalyst structure on the polymerization behaviour is discussed.

ω-phenylalkyl-substituted zirconocene dichloride complexes as catalyst precursors for homogeneous ethylene polymerization

The reaction of ω-phenyl-1-bromoalkanes with cyclopentadienyl sodium, indenyl lithium or fluorenyl lithium forms ω-phenylalkyl-substituted ligand precursors in high yields. The corresponding anions react with zirconium tetrachloride to give ω-phenylalkyl-

Photochemistry of α-(o-tolyl)acetone and some derivatives: Triplet α-cleavage and singlet δ-hydrogen abstraction

Photolysis of α-(o-tolyl)acetone (TA) in 2-propanol was reported not to produce the indanol product expected from δ-hydrogen abstraction and cyclization of the resulting 1,5-biradical. A reinvestigation of this reaction reveals that the photolysis of solutions of TA does produce an indanol, albeit as a minor product. Similarly, photolysis of benzene solutions of o-tolylmethyl benzyl ketone (TBK) and o-tolylmethyl cyclohexyl ketone (TCK) results in the formation of indanols as minor products (ca. 5-10%). However, the photolysis of mesitylmethyl benzyl ketone (MBK) yields an indanol in significant yield (ca. 40%). In all cases, the diphenylethanes (DPEs) expected from free-radical recombination of benzylic radicals produced by α-cleavage are produced as dominant products. In order to determine the synthetic limitations of indanol formation from the photolysis of α-(o-tolyl)acetones, the mechanism of these photolyses was investigated. Sensitization with triplet acetone generated from the thermolysis of tetramethyl-1,2-dioxetane at 70 °C, quenching of the disappearance of ketone by isoprene, and isoprene quenching of the formation of indanol and fluorescence demonstrate that α-cleavage occurs dominantly from the triplet state and that δ-hydrogen abstraction occurs exclusively from the singlet state. Rates of quenching of acetone phosphorescence by dibenzyl ketone (DBK) and TBK in acetonitrile are found to be about 1 order of magnitude less than the rate of diffusion control. The yield of indanol can be enhanced by the introduction of methyl groups to the aryl ring, an increase in the reaction temperature, the addition of a triplet quencher to the reaction mixture, and, as previously reported, the use of microheterogeneous media. The quantum yield measurements for product formation show that the efficiency of α-cleavage drops by half from DBK to TBK and by a factor of 3 from TBK to MBK. We interpret this inefficiency to result from a radiationless deactivation of the singlet state which occurs when the o-tolyl group is attached to the α-position of a dialkyl ketone and this radiationless transition is induced by an incipient but incomplete δ-hydrogen abstraction, as previously proposed for γ-hydrogen abstraction.