abstract |
An object of the present invention is to provide a 4,5-dihydroisocyanate represented by the following formula (3) Azole manufacturing method, which is safe, industrially suitable, economical, and excellent in environmental protection, n n n The present invention is to produce a compound of formula (3) by reacting a compound of formula (1) with hydroxylamine in the presence of an acid catalyst by a reaction shown in the following reaction formula, |