AbstractA simple and efficient domino protocol has been developed for the preparation of biologically important benzamides, 2,2‐diazidobenzofuran‐3(2H)‐ones and benzoxazolones from various structurally and electronically divergent acetophenones and ortho‐hydroxyacetophenones in the presence of molecular iodine, sodium azide and sodium bicarbonate at 100 °C in good to excellent yields.magnified image
Benzoxazolone derivatives, processes for preparation thereof and
申请人:Hokko Chemical Industry Co., Ltd.
公开号:US04420486A1
公开(公告)日:1983-12-13
Certain new 5,6,7-trichlorobenzoxazolone derivatives are highly active against a wide range of plant fungal and bacterial diseases and have a reduced phytotoxicity. These derivatives are also useful to control the growth of various fungi and bacteria being capable of deteriorating industrial materials.
Process for the preparation of 2-chlorobenzoxazoles
申请人:Cassella Aktiengesellschaft
公开号:US04714766A1
公开(公告)日:1987-12-22
The process for the preparation of 2-chlorobenzoxazoles of the formula ##STR1## wherein R.sup.1 and R.sup.2, independently of one another, are hydrogen or halogen comprising reacting a benzoxazolinone of the formula ##STR2## with a molar excess of phosphorus pentachloride.
2-Chlorbenzoxazole der Formel
worin die Symbole R' und R2 unabhängig voneinander Wasserstoff oder Halogen bedeuten, werden hergestellt, indem Benzoxazolinone der Formel II
mit im Überschuß vorliegendem Phosphorpentachlorid umgesetzt werden.