38209-58-4

Usage

InChI:InChI=1/C11H12O5/c1-14-8-5-4-7(6-9(8)15-2)10(12)11(13)16-3/h4-6H,1-3H3

Upstream product

• 67-56-1 methanol 
• 4732-70-1 3,4-dimethoxyphenylglyoxylic acid 
• 5781-53-3 monomethyl oxalyl chloride 
• 91-16-7 1,2-dimethoxybenzene 
• 1131-62-0 1-(3,4-dimethoxyphenyl)ethanone 
• 63987-72-4 2,2-dibromo-1-(3,4-dimethoxyphenyl)ethan-1-one 
• 15964-79-1 methyl (3,4-dimethoxyphenyl)acetate 
• 93-40-3 (3,4-Dimethoxyphenyl)acetic acid 
• 183303-74-4 1-(3,4-dimethoxyphenyl)-2-phenoxy-1-ethanol 
• 140455-40-9 1-(3,4-dimethoxyphenyl)-2-phenoxy-1-ethanone 
• 22675-96-3 2-methoxyphenoxy-3',4'-dimethoxyacetophenone 

Downstream Products

• 191998-16-0 Amino-(3,4-dimethoxy-phenyl)-acetic acid methyl ester 
• 4732-70-1 3,4-dimethoxyphenylglyoxylic acid 
• 850794-59-1 methyl 2-(3,4-dimethoxyphenyl)-3-phenoxy-2-hydroxypropanoate 
• 850794-62-6 2-(3,4-dimethoxyphenyl)-3-phenoxy-2-hydroxypropanoic acid 
• 850794-56-8 methyl 2-(3,4-dimethoxyphenyl)-2,3-epoxypropanoate 

Relevant academic research and scientific papers

Catalytic Activation of Carbon-Hydrogen Bonds in Lignin Linkages over Strong-Base-Modified Covalent Triazine Frameworks for Lignin Oxidative Cleavage

The design of highly efficient catalysts for the cleavage of various lignin linkages is the key step in the depolymerization of lignin. In this paper, strong-base-modified covalent triazine frameworks (CTFs) were reported to be effective in the cleavage o

Cobalt Nanoparticles Embedded in N-Doped Porous Carbon Derived from Bimetallic Zeolitic Imidazolate Frameworks for One-Pot Selective Oxidative Depolymerization of Lignin

Cobalt nanoparticles embedded in N-doped porous carbon (Co@CN) were prepared by the pyrolysis of bimetallic zeolitic imidazolate frameworks (BMZIFs) based on ZIF-8 and ZIF-67. The catalyst shows excellent catalytic efficiency in one-pot selective oxidative cleavage of different linkages like β-O-4, a-O-4 and β-1 in organosolv lignin and lignin model compounds in the presence of oxygen (ambient pressure) under mild conditions (383 K). Compared with traditional supported catalyst, the catalyst gives a highly hollow structure, which favored the adsorption of substrates and oxygen. The uniform cobalt nanoparticles surrounded by N-doped graphitic structures and the strong electron transfer from graphitic nitrogen to Co NPs make it hard to be oxidized prior to use and higher catalytic reactivity. Moreover, the catalyst can be easily recovered by magnetic force after the reaction, and reused after reduction for five times without an obvious change in yields.

New method for preparing alpha-bromo-3,4-dimethoxyphenylacetic trichloroethanol ester

The invention discloses a method for preparing a key intermediate alpha-bromo-3,4-dimethoxyphenylacetic trichloroethanol ester for synthesis of Baculiferin L. the method comprises the following steps:1) using 1,2-dimethoxylphenyl (CAS: 91-16-7) and methyl

Method for catalyzing oxidative cracking of lignin by heterogeneous cobalt

The invention discloses a method for catalyzing oxidative cracking of lignin by a heterogeneous cobalt. The method adopts a porous carbon-nitrogen-loaded cobalt nano-material as a catalyst, and oxidative cracking of beta-O-4, alpha-O-4 and beta-1 lignin template compounds and solvent type lignin is carried out under the action of the catalyst with methanol as a solvent and oxygen as an oxidant inorder to obtain phenol, methyl benzoate and other small molecule compounds. The heterogeneous cobalt catalyst adopted in the invention realizes a wide application range of a substrate, is suitable forthe oxidative cracking of the beta-O-4, alpha-O-4 and beta-1 lignin template compounds and solvent type lignin, realizes high yield of a product and no polymerization of the product, and can be simply recovered through magnetic force after the reaction ends.

Rh-catalyzed asymmetric hydrogenation of racemic aldimines via dynamic kinetic resolution

Catalyzed by a rhodium complex of P-stereogenic diphosphine ligand trichickenfootphos (TCFP), asymmetric hydrogenation of racemic aldimines via dynamic kinetic resolution has been realized for the preparation of chiral arylglycines with good yields and enantioselectivities.

Development of a simple system for the oxidation of electron-rich diazo compounds to ketones

Mild heating of diazo compounds in DMSO furnishes ketone products in moderate to excellent yields. The reaction is particularly effective on electron-rich substrates and exhibits high chemoselectivity, allowing for the use of diazo compounds containing additional oxidation-prone functional groups. This straightforward protocol offers an alternate route to synthetically useful α-ketoesters from readily available aryl diazoacetates.

An efficient and practical synthesis of aryl and hetaryl α-keto esters

A general and highly efficient method was developed for the synthesis of -keto esters by oxidative esterification of 2,2-dibromo-1-(het)arylethanones by sequential treatment with dimethyl sulfoxide and an alkanol. The versatility of the reaction was established by synthesizing a range of -keto esters by treatment of 2,2-dibromoethanones, derived from aryl or hetaryl ketones, with di-methyl sulfoxide and a cyclic or acyclic primary or secondary alcohol. The mechanism of the reaction was established by means of a detailed study. Georg Thieme Verlag Stuttgart · New York.

Generation and reactivity of ketyl radicals with lignin related structures. On the importance of the ketyl pathway in the photoyellowing of lignin containing pulps and papers

(Chemical Equation Presented) Ketyl radicals with lignin related structures have been generated by means of radiation chemical and photochemical techniques. In the former studies ketyl radicals are produced by reaction of α-carbonyl-β-aryl ether lignin models with the solvated electron produced by pulse radiolysis of an aqueous solution at pH 6.0. The UV-vis spectra of ketyl radicals are characterized by three main absorption bands. The shape and position of these bands slightly change when the spectra are recorded in alkaline solution (pH 11.0) being now assigned to the ketyl radical anions and a pKa = 9.5 is determined for the 1-(3,4,5-trimethoxyphenyl)-2- phenoxyethanol-1-yl radical. Decay rates of ketyl radicals are found to be dose dependent and, at low doses, lie in the range (1.7-2.7) × 103 s-1. In the presence of oxygen a fast decay of the ketyl radicals is observed (k2 = 1.8-2.7 × 109 M-1 s -1) that is accompanied by the formation of stable products, i.e., the starting ketones. In the photochemical studies ketyl radicals have been produced by charge-transfer (CT) photoactivation of the electron donor-acceptor salts of methyl viologen (MV2+) with α-hydroxy-α- phenoxymethylaryl acetates. This process leads to the instantaneous formation of the reduced acceptor (methyl viologen radical cation, MV+?), as is clearly shown in a laser flash photolysis experiment by the two absorption bands centered at 390 and 605 nm, and an acyloxyl radical [ArC(CO 2?)(OH)CH2(OC6H5)], which undergoes a very fast decarboxylation with formation of the ketyl radicals. Steady-state photoirradiation of the CT ion pairs indicates that 1-aryl-2-phenoxyethanones are formed as primary photoproducts by oxidation of ketyl radicals by MV2+ (under argon) or by molecular oxygen. Small amounts of acetophenones are formed by further photolysis of 1-aryl-2-phenoxyethanones and not by β-fragmentation of the ketyl radicals. The high reactivity of ketyl radicals with oxygen coupled with the low rates of β-fragmentation of the same species have an important bearing in the context of the photoyellowing of lignin containing pulps and papers.