In heterogeneous catalysis, the catalyst is in a different phase from the reactants. Quality Control of 2,2-Dimethyl-2,3-dihydrobenzofuran-7-ol, At least one of the reactants interacts with the solid surface in a physical process called adsorption in such a way. 1563-38-8, name is 2,2-Dimethyl-2,3-dihydrobenzofuran-7-ol. In an article，Which mentioned a new discovery about 1563-38-8
PROBLEM TO BE SOLVED: To provide a simple method for producing a production intermediate of a polyethylene glycol derivative, and further to provide a large number of compounds useful as effective components of an antitumor agent by virtue of the method.
SOLUTION: A polyethylene glycol monoether compound represented by formula (1) (in the formula, R represents a hydrocarbon group that may contain a substituent, and n represents a positive integer) or its salt is produced by using a compound resulting from esterifying one hydroxy group alone of a polyethylene glycol compound with a p-toluenesulfonyl group.
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Reference：
Benzofuran – Wikipedia,
Benzofuran | C8H2331O – PubChem