7721-07-5

Basic information

• Product Name: magnesium di(phenolate)
• Synonyms: magnesium di(phenolate)
• CAS NO: 7721-07-5
• Molecular Formula: C₁₂H₁₀MgO₂
• Molecular Weight: 210.5116
• EINECS: 231-756-1
• Mol File: 7721-07-5.mol
• Article Data: 3

Chemical Properties

• Boiling Point: °Cat760mmHg
• Flash Point: °C
• Appearance: /
• Density: g/cm³
• CAS DataBase Reference: magnesium di(phenolate)(CAS DataBase Reference)
• NIST Chemistry Reference: magnesium di(phenolate)(7721-07-5)
• EPA Substance Registry System: magnesium di(phenolate)(7721-07-5)

Safety Data

• Hazardous Substances Data: 7721-07-5(Hazardous Substances Data)

Usage

InChI:InChI=1/2C6H6O.Mg/c2*7-6-4-2-1-3-5-6;/h2*1-5,7H;/q;;+2/p-2

Upstream product

• 1746-13-0 allyl phenyl ether 
• 7439-95-4 magnesium 
• 108-95-2 phenol 

Downstream Products

• 606-19-9 2-hydroxyisophthalic acid 
• 69-72-7 salicylic acid 
• 99-96-7 4-hydroxy-benzoic acid 
• 1174-72-7 tetraphenoxysilane 

Relevant articles and documents

Effects of alkali and alkaline earth metals on the Kolbe-Schmitt reaction

It was found that the carboxylations of magnesium, calcium, and barium phenoxides with carbon dioxide at 260 °C produced salicylic acid and dicarboxylic acids (4-hydroxyisophthalic acid and 2-hydroxyisophthalic acid) in very high yields (80-100%), exceeding that of the ordinary Kolbe-Schmitt reaction. The orientation (ortho/para ratio) was controlled not only by chelations of the intermediate with alkaline earth metal (Mg, Ca, Ba) ions, resulting in salicylic acid, but also by the sizes of metal ions (Rb, Cs), giving p-hydroxybenzoic acid in a much higher ratio than the widely used method with potassium or sodium phenoxide. These alkaline earth metals worked to produce 3-hydroxy-2-naphthoic acid by the reaction of 2-naphthoxide with carbon dioxide, but the yield of 6-hydroxy-2-naphthoic acid was comparable to that of 3-hydroxy-2-naphthoic acid when cesium or rubidium 2 naphthoxide was employed. Considerably high yields (～60%) of 6-hydroxy-2-naphthoic acid, a monomer of one of the best liquid-crystal polymers, was attained by the carboxylation of cesium or rubidium 2-naphthoxide in the presence of potassium or sodium carbonate, where the alkali metal ion was supposed to increase the reactivity of the substrate. The formation of "binol" was observed in the preparation of 2-naphthoxides with metal hydroxides, especially with copper(II) ion.

Process for producing o-methylated phenols

A process for producing o-methylated phenols useful as raw materials for resins and medicines in high yields comprising reacting methanol with phenols in the presence of a catalyst containing at least one compound selected from the group consisting of (1) magnesium oxide, manganese oxide and iron oxide which are all pre-treated with phenols and (2) magnesium phenolate.