3421-95-2

Upstream product

• 100-44-7 benzyl chloride 
• 1948-33-0 tert-butylhydroquinone 
• 100-39-0 benzyl bromide 

Downstream Products

• 1252785-23-1 4-(benzyloxy)-2-tert-butyl-6-[(4-methoxy-2-nitrophenyl)diazenyl]phenol 
• 88-32-4 3-tert-butyl-4-methoxyphenol 
• 192803-36-4 5-benzyloxy-3-tert-butyl-2-hydroxy-benzaldehyde 
• 805314-84-5 (4-methoxy-phenoxy)-acetic acid 3-tert-butyl-5-formyl-4-hydroxy-phenyl ester 
• 616873-79-1 1,3,5-benzenetrioxytriacetic acid tri-(3-tert-butyl-5-formyl-4-hydroxy-phenyl)ester 
• 616873-78-0 p-phenylenedioxydiacetic acid di-(3-tert-butyl-5-formyl-4-hydroxy-phenyl)ester 
• 192803-37-5 3-tert-butyl-2,5-dihydroxybenzaldehyde 

Relevant academic research and scientific papers

NOVEL REACTIVE BENZOTRIAZOLE UV ABSORBER AND USE THEREOF

A novel reactive benzotriazole UV absorber and a use thereof are disclosed. The benzotriazole UV absorber is represented by the following formula (I): wherein, A, R1, R2 and X are defined in the specification.

Photocatalytic synthesis of dihydrobenzofurans by oxidative [3+2] cycloaddition of phenols

We report a protocol for oxidative [3+2] cycloadditions of phenols and alkenes applicable to the modular synthesis of a large family of dihydrobenzofuran natural products. Visible-light-activated transition metal photocatalysis enables the use of ammonium persulfate as an easily handled benign terminal oxidant. The broad range of organic substrates that are readily oxidized by photoredox catalysis suggests that this strategy may be applicable to a variety of useful oxidative transformations.

Synthesis of benzotriazole monomer

The synthesis of benzotriazole monomers and the use of the benzotriazole monomers and one or more other monomers to prepare ultraviolet (UV) light absorbing polymer compositions. The synthetic methods described in this application provide a significant improvement over the previous methods used to prepare benzotriazole monomers.

Polymeric salen-Ti(IV) or V(V) complex catalyzed asymmetric synthesis of O-acetylcyanohydrins from KCN, Ac2O and aldehydes

Polymeric salen-Ti(IV) and V(V) complexes were employed in the enantioselective O-acetyl cyanation of aldehydes with potassium cyanide and acetic anhydride. The crosslinked polymeric salen-Ti(IV) catalyst exhibited good activities and enantioselectivities, up to 91% ee with 99% conversion was obtained at -20°C with 1 mol% of catalyst (based on bimetallic catalytic unit). Moreover, six consecutive recyclings with the easily recovered crosslinked polymeric catalyst showed no obvious decrease in either activity or enantioselectivity. Linear polymeric salen-V(V) catalyst showed good catalytic efficiency too, up to 94% ee with 99% conversion was obtained at -42°C with 5 mol% of catalyst. Graphical Abstract.

Highly enantioselective resolution of terminal epoxides with cross-linked polymeric salen-Co(III) complexes

Crosslinked polymeric salen-Co(III) complexes derived from a novel dialdehyde and a trialdehyde were synthesized and employed in the hydrolytic kinetic resolution (HKR) of terminal epoxides. Up to 99% ee were obtained with only 0.16-0.02 mol% of catalyst (based on catalytic unit).

Oxidation of Alkoxyphenols. Part 26. The Trimer of a 2,2'-Diphenoquinone (1,1'-Bicyclohexa-3,5-dienylidene-2,2'-dione)

The blue material produced in the oxidation of 4-methoxy-3-t-butylphenol, formerly described as an intermediate in the formation of the dibenzodioxepin oxidation product, is shown to be 5,5'-dimethoxy-4,4'-di-t-butyl-2,2'-diphenoquinone.This qui