117766-40-2

Upstream product

• 486-25-9 9-fluorenone 
• 100-66-3 methoxybenzene 
• 90-96-0 bis(p-methoxyphenyl)methanone 
• 3236-71-3 9,9-bis(4-hydroxyphenyl)fluorene 
• 74-88-4 methyl iodide 
• 1616859-93-8 3-(biphenyl-2-yl)-1-phenylprop-2-yn-1-one 
• 86-73-7 9H-fluorene 
• 82214-69-5 2-biphenylmagnesium bromide 
• 16513-88-5 Biphenyl-2-yl-bis-(4-methoxy-phenyl)-methanol 

Downstream Products

• 3236-71-3 9,9-bis(4-hydroxyphenyl)fluorene 

Relevant academic research and scientific papers

4,4′-(Fluorene-9,9-diyl)diphenol: A new versatile building block for clathrate type and macrocyclic host-guest inclusion

4,4′-(Fluorene-9,9-diyl)diphenol (1) is demonstrated to be both an effective clathrate host in itself and a useful construction element to form a rigid macrocyclic host compound 2. The X-ray crystal structures of 1 and of its inclusion compounds with acetonitrile (1 : 1) and ethanol (1 : 2) as well as the inclusion compound of 2 with dimethyl sulfoxide (1 : 4) and the mixed-guest inclusion compounds of 2 with 2-picoline, 3-picoline or 4-picoline and acetone (2 : 2 : 1) are reported. Inclusion compounds of 1 with acetonitrile and ethanol are studied by thermal analysis.

Metal-free cycloisomerizations of: O -alkynylbiaryls

We describe a novel and highly efficient metal-free strategy to construct 9,9-disubstituted fluorenes and phenanthrenes via the TfOH-catalyzed cycloisomerizations of o-alkynylbiaryls. Notably, the significant effects of the electronic properties and steric hindrance of the alkyne terminus on the reaction selectivity have been observed.

Palladium-copper catalyzed C(sp3)-C(sp2) bond C-H activation cross-coupling reaction: Selective arylation to synthesize 9-aryl-9: H -xanthene and 9,9-diaryl-xanthene derivatives

A novel cooperatively catalyzed C(sp3)-C(sp2) bond C-H activation cross-coupling reaction has been developed. A series of 9-aryl-9H-xanthenes and 9,9-diaryl-xanthenes were selectively synthesized in moderate to good yields by control

AROMATIC SULFONIUM SALT COMPOUND

A photoacid generator which can generate an acid efficiently when energy was absorbed, is excellent in the developing property and can form fine patterns, and a cationic polymerization initiator excellent in curability are provided; and a resist composition and a cationically polymerizable composition using them are provided. An aromatic sulfonium salt compound represented by the General Formula (I) below: (wherein each of E1 to E4 independently represents a substituent represented by the General Formula (II) below or the General Formula (III) below). Preferably, in the General Formula (I), r and s are 0; m and n are 0; or n and r are 0, and more preferably, one of m and s in the General Formula (I) is 1.