AN EASY SYNTHESIS OF SOME 1,2,3,4-TETRAHYDRO-9-OXA-10-PHOSPHA-PHENANTHRENE-10-OXIDES
摘要:
2-Cycloalkenylphenols 3 react under mild conditions with PCl3 to give the 10-chloro-2,3,4,10-tetrahydro-1H-9-oxa-10-phospha-phenanthrenes 4. The latter are readily hydrolyzed to afford the 1,2,3,4-tetrahydro-9-oxa-10-phospha-phenanthrene-10-oxides 5 in good to excellent yields.
A description is given of novel compounds of formula I ##STR1## wherein R.sup.1, R.sub.2, R.sub.3, and R.sup.4 are hydrogen, alkyl, phenylalkyl, or alkoxy and where R.sub.5 and R.sub.6 are hydrogen or phenyl or together with the linking carbon atoms, are cycloalkenylene or cycloalkenylene which is interrupted by oxygen or sulfur. These compounds are useful as stabilizers for organic materials against oxidative, thermal or light-induced degradation.
Cyclische Phosphinsäurederivate als Stabilisatoren
申请人:Ciba Specialty Chemicals Holding Inc.
公开号:EP0850946A1
公开(公告)日:1998-07-01
Es werden neue Verbindungen der Formel I
worin die allgemeinen Symbole wie in Anspruch 1 definiert sind, als Stabilisatoren für organische Materialien gegen oxidativen, thermischen oder lichtinduzierten Abbau beschrieben.
式 I 的新型化合物
其中一般符号如权利要求 1 所定义,可作为有机材料的稳定剂,防止氧化、热或光引起的降解。
US5932642A
申请人:——
公开号:US5932642A
公开(公告)日:1999-08-03
AN EASY SYNTHESIS OF SOME 1,2,3,4-TETRAHYDRO-9-OXA-10-PHOSPHA-PHENANTHRENE-10-OXIDES
作者:Peter Nesvadba、Paul Dubs
DOI:10.1081/scc-100000195
日期:2001.1
2-Cycloalkenylphenols 3 react under mild conditions with PCl3 to give the 10-chloro-2,3,4,10-tetrahydro-1H-9-oxa-10-phospha-phenanthrenes 4. The latter are readily hydrolyzed to afford the 1,2,3,4-tetrahydro-9-oxa-10-phospha-phenanthrene-10-oxides 5 in good to excellent yields.