申请人:Hoechst Aktiengesellschaft
公开号:US04138433A1
公开(公告)日:1979-02-06
Preparation of 2,5-dioxo-1,2-oxa-phospholanes having general formula (I) ##STR1## wherein R.sup.1 represents an alkyl group being optionally substituted and having up to 18 carbon atoms, a cycloalkyl group having up to 8 carbon atoms, an alkenyl group having up to 8 carbon atoms, an aryl group having up to 14 carbon atoms being possibly substituted by lower alkyl groups, by alkoxy groups, by halogen or by lower alkyl radicals, by alkylated or dialkylated amino groups, or which represents an aralkyl group having up to 15 carbon atoms and being possibly substituted in the same way as the aryl group, Wherein R.sup.2 stands for a lower alkyl group or hydrogen and R.sup.3 stands for a lower alkyl radical, a phenyl radical being possibly substituted by halogen or lower alkyl groups, for a benzyl radical or for hydrogen.
制备具有通式(I)的2,5-二氧代-1,2-氧杂磷环己烷,其中R1代表一个烷基团,可选地取代,具有高达18个碳原子,一个环烷基团,具有高达8个碳原子,一个烯基团,具有高达8个碳原子,一个芳基团,具有高达14个碳原子,可能被低烷基团,烷氧基团,卤素或低烷基自由基取代,被烷基化或二烷基化氨基团取代,或者表示一个芳基烷基团,具有高达15个碳原子,并且可能以与芳基团相同的方式被取代,其中R2代表低烷基团或氢,R3代表低烷基自由基,一个苯基可能被卤素或低烷基团取代,一个苄基或氢。