hat
Nitrasyon Dirèk konsidere kòm pi alèz pase sulfonasyon dirèk nan piridin. Bouyi piridin nan 320 ° C ka rezilta nan piridin-3-sulfonik asid pi vit pase bouyi asid silfirik nan tanperati yo menm. Ka adisyon nan eleman nan souf atòm azòt ka jwenn pa reyaji gwoup SO3 nan prezans mèki (II) sulfat ki aji kòm yon katalis.
eng
Direct nitration is considered to be more comfortable than direct sulfonation of pyridine. Boiling of pyridine at 320 °C can result in pyridine-3-sulfonic acid faster than boiling sulfuric acid at the same temperatures. The addition of the sulfur element to nitrogen atom can be obtained by reacting SO3 group in the presence of mercury (II) sulfate which acts as a catalyst.