The present invention relates to an environment-friendly process for selective acylation of aminophenol. In particular, the present invention relates to an environment-friendly process for selective acylation of para-aminophenol to obtain N-acetyl-para-aminophenol (APAP).

The present invention relates to an environment-friendly process for selective acylation of aminophenol. In particular, the present invention relates to an environment-friendly process for selective acylation of para-aminophenol to obtain N-acetyl-para-aminophenol (APAP).

Disclosed are compounds represented by structural formula

##STR00001## methods of producing compounds represented by structural formula, and their use in inhibiting oxidation in an oxidizable material.

Disclosed are compounds represented by structural formula

##STR00001## methods of producing compounds represented by structural formula, and their use in inhibiting oxidation in an oxidizable material.

A method for preparing a pyrimidone compound and an important intermediate in which raw materials of the preparation method are cheap, the reaction condition of preparation method is mild, the preparation method is simple to operate, and is safe and controllable, has high total yield, and thus is suitable for industrial production.

A method for preparing a pyrimidone compound and an important intermediate in which raw materials of the preparation method are cheap, the reaction condition of preparation method is mild, the preparation method is simple to operate, and is safe and controllable, has high total yield, and thus is suitable for industrial production.

A method for preparing a pyrimidone compound and an important intermediate in which raw materials of the preparation method are cheap, the reaction condition of preparation method is mild, the preparation method is simple to operate, and is safe and controllable, has high total yield, and thus is suitable for industrial production.

A method for preparing a pyrimidone compound and an important intermediate in which raw materials of the preparation method are cheap, the reaction condition of preparation method is mild, the preparation method is simple to operate, and is safe and controllable, has high total yield, and thus is suitable for industrial production.

Disclosed are compounds represented by structural formula

##STR00001## methods of producing compounds represented by structural formula, and their use in inhibiting oxidation in an oxidizable material.

Disclosed are compounds represented by structural formula

##STR00001## methods of producing compounds represented by structural formula, and their use in inhibiting oxidation in an oxidizable material.