5155-60-2

Upstream product

• 7382-68-5 1-(4-hydroxy-3-methoxyphenyl)-2-(2-methoxyphenoxy)ethanol 

Downstream Products

• 82247-24-3 1-(3-methoxy-4-hydroxyphenyl)-1-(10-methoxy-9-oxoanthracen-10-yl)-2-(2-methoxyphenoxy)ethane 
• 74838-64-5 10-Hydroxy-10-[1-(4-hydroxy-3-methoxy-phenyl)-2-(2-methoxy-phenoxy)-ethyl]-10H-anthracen-9-one 
• 82247-13-0 10-[1-(4-Hydroxy-3-methoxy-phenyl)-2-(2-methoxy-phenoxy)-ethyl]-10H-anthracen-9-one 
• 19826-92-7 1-(4-Acetoxy-3-methoxy-phenyl)-2-(2-methoxy-phenoxy)-ethan-1-sulfonsaeuremethylester 
• 22347-86-0 trans-4-Hydroxy-3-methoxy-styrol-ω-sulfonsaeure 
• 82247-14-1 Acetic acid 2-methoxy-4-[2-(2-methoxy-phenoxy)-1-(10-oxo-9,10-dihydro-anthracen-9-yl)-ethyl]-phenyl ester 
• 82247-00-5 1-(3-methoxy-4-acetoxyphenyl)-1-(10-hydroxy-9-oxoanthracen-10-yl)-2-(2-methoxyphenoxy)ethane 
• 82247-21-0 1-(3-methoxy-4-acetoxyphenyl)-1-(10-acetoxy-9-oxoanthracen-10-yl)-2-(2-methoxyphenoxy)ethane 

Relevant academic research and scientific papers

Adducts of Anthrahydroquinone and Anthranol with Lignin Model Quinone Methides. 1. Synthesis and Characterization

Adduct formation of anthrahydroquinone (9,10-dihydroxyanthracene, AHQ) or anthranol (9-hydroxyanthracene) with lignin model quinone methides (4-methylenecyclohexa-2,5-dienones) was established.This reaction is thought to be the key step in AHQ-catalyzed delignification of wood under alkaline pulping conditions.Numerous quinone methides derived from both 1-aryl-2-O-arylethyl and 1-aryl-2-O-arylpropyl lignin models were used.A typical example is the reaction of the quinone methide derived from 1-(3-methoxy-4-hydroxyphenyl)-2-(2-methoxyphenoxy)propane-1,3-diol with AHQto give the adduct threo-1-(3-methoxy-4-hydroxyphenyl)-1-(10-hydroxy-9-oxoanthracen-10-yl)-2-(2-methoxyphenoxy)propan-3-ol. 1H NMR spectra of the adducts revealed large diamagnetic shifts of the protons in the 1-aryl substituent due to its close approach to the shielding regions of the anthracenyl moiety.This effect dimished with increasing size of the 10-substituent (H to OH to OAc).In AHQ adducts, intense hydrogen bonding between the 10-OH and the ether oxygen of the 2-aryl ether substituent was indicated by a large paramagnetic shift of the hydroxyl proton.The unusually large diamagnetic and paramagnetic shifts reflect a distinct rigidity of the adduct conformation that is more pronounced in the adducts containing a propyl side chain.