Phosphorous acid derivatives as intermediates in the preparation of Hals derivatives
申请人:Clariant Finance (BVI) Limited
公开号:EP0822198B1
公开(公告)日:2002-11-06
SYNTHESIS OF NEW ORGANIC PHOSPHITES CONTAINING STERICALLY HINDERED PIPERIDINE GROUPS
作者:I. Bauer、W. D. Habicher
DOI:10.1080/10426509708031565
日期:1997.9
Abstract The synthesis of several phosphites with sterically hindered piperidine groups which are potential stabilizers for synthetic polymers is described. The reaction of phosphorous acid hexaethyltriamide (1) with the 4-hydroxypiperidine compounds 2 and 3 in a 1:1 and 1:2 ratio gives the phosphorous acid monoester diamides 4 and 5 and phosphorous acid diester monoamides 6 and 7, respectively. These