Zorina, L. N.; Safiev, O. G.; Chanyshev, R. R.; Zorin, V. V.; Rakhmankulov, D. L. published the article 《Preparation of halogenated benzodioxacycloalkanes》. Keywords: benzodioxole sodium hypochlorite halogenation; benzodioxan sodium hypobromite halogenation; halobenzodioxole preparation; halobenzodioxan preparation.They researched the compound: 6-Bromo-2,3-dihydrobenzo[b][1,4]dioxine( cas:52287-51-1 ).Recommanded Product: 52287-51-1. Aromatic heterocyclic compounds can be divided into two categories: single heterocyclic and fused heterocyclic. In addition, there is a lot of other information about this compound (cas:52287-51-1) here.
Reaction of 1,3-benzodioxole (I) and 1,4-benzodioxan (II) with NaOCl and NaOBr in presence of sulfuric acid resulted in mono- and dihalogenated derivatives of I and II. Regioselectivity of this reaction depended on the reagents ratio.
After consulting a lot of data, we found that this compound(52287-51-1)Recommanded Product: 52287-51-1 can be used in many types of reactions. And in most cases, this compound has more advantages.
Reference:
Pyrazole – Wikipedia,
Pyrazoles – an overview | ScienceDirect Topics