公开(公告)号：US3853961A

公开(公告)日：1974-12-10

申请号：US31788972

申请日：1972-12-26

Applicant: BAYER AG

Inventor： BIRKENSTOCK U ,  WEDEMEYER K

IPC: C07C51/36 ,  C08G69/26 ,  C07C69/34 ,  C07C55/02

CPC classification number: C08G69/26 ,  C07C51/36 ,  C07C55/02

Abstract: IN WHICH R represents hydrogen or a methyl group and R1 represents an alkyl radical with from one to four carbon atoms or hydrogen. The compounds obtainable by the process according to the invention can be reacted with diamines to form novel polyamides (this applies both as regards the known linear diesters or dicarboxylic acids and in particular as regards the novel branched diesters and corresponding dicarboxylic acids).

IN WHICH R represents hydrogen or a methyl group and R1 represents hydrogen or a linear or branched lower alkyl radical is reacted with at most 1.95 mols of butadiene in the presence of a nickel catalyst which contains nickel in an oxidation state of less than +2 and which can be modified by donors, or nickel tetracarbonyl at a temperature in the range from about 50* to about 160*C, the unsaturated compounds formed are hydrogenated optionally without being isolated. The new compounds obtainable by this process correspond to the general formula

Dicarboxylic acid esters are obtained by reacting 1 mol of a compound corresponding to the general formula

Abstract translation: 二羧酸酯是通过使1摩尔相应于通式IN的化合物，其中R表示氢或甲基，R1表示氢或直链或支链的低级烷基与至多1.95摩尔的丁二烯反应， 的镍催化剂，其含有氧化态小于+2的镍，并且可以在约50至约160℃的温度范围内由供体或四羰基镍修饰，所形成的不饱和化合物可任选地被氢化 没有孤立