胡椒环 、 硝酸 、 在
acetic ester 、 potassium hydrogencarbonate 、 乙醇 作用下,
以
acetic acid ester 为溶剂,
反应 2.0h,
以furnished 37 g of a product of the melting point between 84° and 85° C.的产率得到5-nitro-2-phenyl-1,3-benzodioxolan
参考文献:
名称:
Benzodioxolan derivatives, process of making the same and herbicidal
Benzodioxolan derivatives, process of making the same and herbicidal
申请人:Schering Aktiengesellschaft
公开号:US04155915A1
公开(公告)日:1979-05-22
Benzodioxolan derivatives of the formula ##STR1## wherein R.sub.1 and R.sub.2 are the same or different and are hydrogen, an aliphatic hydrocarbon residue, a halogenated aliphatic hydrocarbon residue, an aromatic hydrocarbon residue, a substituted aromatic hydrocarbon residue, A heterocyclic residue or a substituted heterocyclic residue, Or wherein R.sub.1 and R.sub.2 together with the adjoining carbon atom are a cycloaliphatic hydrocarbon residue which may additionally be substituted by nitrogen or oxygen or both, and wherein R.sub.3 is hydrogen or an aliphatic hydrocarbon residue, And wherein R.sub.4 is a saturated or unsaturated aliphatic hydrocarbon residue or is alkoxy and wherein R.sub.5 is hydrogen or is a saturated or unsaturated aliphatic hydrocarbon residue. The compounds have a high herbicidal activity against weeds and superior selective herbicidal properties for agricultural and horticultural plantations. The invention also embraces processes for making the compounds and compositions containing the same.