532987-77-2

Upstream product

• 1616416-12-6 C₁₅H₁₈O 
• 532987-76-1 2-(hydroxy-phenyl-methyl)3-methyl-2-cyclopentene-1-one 
• 70156-97-7 6-bromo-7-methyl-1,4-dioxaspiro<4.4>non-6-ene 
• 80963-36-6 2-bromo-3-methyl-2-cyclopentene-1-one 
• 2758-18-1 3-Methyl-2-cyclopenten-1-one 
• 917-54-4 methyllithium 
• 532987-75-0 3-methyl-2-[phenyl-(2-tetrahydropyranyloxo)methyl]-2-cyclopenten-1-one 

Downstream Products

• 532987-78-3 2-[α-fluorenylbenzyl]-1,3-dimethylcyclopentadiene 
• 1616416-13-7 [(-C(phenyl)HC-(phenyl)H-)(η⁵-2,5-(methyl)₂C₅H₂)₂ZrCl₂] 

Relevant academic research and scientific papers

Preparation of ansa-metallocenes for production of poly(α-olefin) lubricants

An ansa-zirconocene bearing methyl substituents at all positions adjacent to the bridgehead [(-C(Ph)HC(Ph)H-)(η5-2,5-Me2C 5H2)2ZrCl2] (4) was prepared in high yields (78%) through the reductive dimerization of 1,4-dimethyl-6-phenylfulvene utilizing ZrCl2·DME generated in situ. The structure of 4 was subsequently confirmed using X-ray crystallography. 4 exhibited excellent catalytic performance with regard to 1-decene oligomerization, which was carried out with the intention of preparing lubricant base stocks. High activities (21 × 106 g mol-1 Zr h-1 activity; TON = 150 000; TOF = 42 s-1) were observed at temperatures as high as 120 °C and the oligomer distribution was appropriate for lubricant application. The simulated distillation (SIMDIS) data confirmed that a wide range of oligomers were formed, ranging from the dimer (2-mer) to 20-mer. A minimal amount of the dimer and oligomers larger than the 10-mer was formed (13 and 25 wt%, respectively). Alternatively, a typical unbridged complex such as (η5-nBuC5H4)2ZrCl2 primarily produced dimers (54 wt%), whereas the ansa-zirconocene (EBI)ZrCl 2 primarily produced oligomers larger than 10-mer (62 wt%). The methyl substituents at the positions adjacent to the bridgehead in 4 played a significant role in the catalytic performance.

Fulvene, metallocene catalysts and preparation method thereof, and preparation of polyolefines copolymer using the same

The present invention relates to a novel fulvene compound and a preparation method thereof, and more particularly to a fulvene compound having substituted groups in the 2- and 5-positions, prepared from an unsaturated ketone having a substituted group in

Fulvene having substituents only on 1-, 4-, and 6-positions: A key intermediate for novel ansa-metallocene complexes

A synthetic route for 1,4-dimethyl-6-phenylfulvene (4) and 1,4-dimethyl-6,6-diphenylfulvene (5), which are characteristic in that they have substituents only on 1-, 4-, and 6-positions, is developed. The synthetic route is straightforward from 2-bromo-3-m