三苯基膦置于溴,三乙胺体系中,用 苯 用作溶剂,化学反应 1.0H,反应生成二溴三苯基膦 参考文献:受阻烯烃形成二氧杂环丁烷的立体化学研究 标题:受阻烯烃形成二氧杂环丁烷的立体化学研究 摘要:Etude De La Photooxygenation Par L'Oxygene Singulet,De La Photooxygenation Par L'Anthracenedicarbonitrile-9,10 Et De L'Electrooxygenation De Bicyclanylidenes En Dioxetanes-1,2 Dispiranniques Doi:10.1021/ja00338A028
专利信息
专利号:US-4277610-A 优先权日:1975-01-27 标 题 :Synthesis of 2,6,10-trimethyl-undecan-1-ol 发明人:COHEN NOAL; SAUCY GABRIEL 权利人:HOFFMANN LA ROCHE 摘要:A synthesis of 2,6,10-trimethyl-undecan-1-ol, an intermediate for producing vitamin E, from methacrolein, crotonaldehyde, β-hydroxy-isobutyric acid including intermediates in this synthesis.
专利号:US-4895922-A 优先权日:1988-05-05 标 题 :Low temperature synthesis of polyesteramides 发明人:OGATA NAOYA 权利人:GOODYEAR TIRE & RUBBER 摘要:This invention disclosed a process for the synthesis of polyesteramides. By utilizing the phosphorus containing catalyst systems of the present invention, such polyesteramides can be synthesized at relatively low temperatures. The present invention specifically discloses a process for the synthesis of a polyesteramide which comprises polymerizing at least one diamine, at least one diol, and at least one dicarboxylic acid in the presence of (1) at least one acid acceptor; (2) at least one halogenated organic compound; and (3) at least one phosphorus containing compound selected from the group consisting of (a) triphenylphosphine, (b) triphenylphosphine oxide, (c) triphenylphosphine sulfide, (d) polymeric agents having pendant diphenylphosphine groups, (e) silicon-phosphorus compositions which contain at least one divalent oxygen atom which is bonded directly to a tetravalent silicon atom and a trivalent or pentavalent phosphorus atom; (f) compounds with the structural formula (C 6 H 5 ) 3 P=N-R, wherein R is a hydrogen atom or an alkyl group containing from 1 to 10 carbon atoms; and (g) compounds with the structural formula (C 6 H 5 )PR 1 R 2 wherein R 1 and R 2 can be the same or different, wherein R 1 is selected from the group consisting of alkyl groups containing from 1 to 10 carbon atoms and phenyl groups, and wherein R 2 is an alkyl group containing from 1 to 10 carbon atoms.
专利号:US-4598160-A 优先权日:1983-07-15 标题 :Intermediate phenolic compounds for the catalytic synthesis of chromans 发明人:TRUESDALE LARRY K 权利人:HOFFMANN LA ROCHE 摘要:A catalytic synthesis of chromans in racemic or optically active forms, including intermediates thereto; the synthesis employs an asymmetric palladium (II) catalyzed oxidative cyclization of a 2-homoallylphenol and provides intermediates useful in making chromans, especially vitamin E in racemic or optically active forms.
专利号:US-4151205-A 优先权日:1975-01-27 标题 :Synthesis of vitamin E 发明人:COHEN NOAL; SAUCY GABRIEL 权利人:HOFFMANN LA ROCHE 摘要:A synthesis of vitamin E in racemic or optically active forms from methacryolein or beta-hydroxyisobutyric acid including intermediates in this synthesis.
专利号:US-4163021-A 优先权日:1975-01-27 标 题 :Synthesis of 2,6,10-trimethyl-undecan-1-ol 发明人:COHEN NOAL; SAUCY GABRIEL 权利人:HOFFMANN LA ROCHE 摘要:A synthesis of 2,6,10-trimethyl-undecan-1-ol, an intermediate for producing vitamin E, from methacrolein, crotonaldehyde, β-hydroxy-isobutyric acid including intermediates in this synthesis.
专利号:US-4041058-A 优先权日:1975-01-27 标题 :Synthesis of 2,6,10-trimethyl-undecan-1-ol 发明人:COHEN NOAL; SAUCY GABRIEL 权利人:HOFFMANN LA ROCHE 摘要:A synthesis of 2,6,10-trimethyl-undecan-1-ol, an intermediate for producing vitamin E, from methacrolein, crotonaldehyde, β-hydroxy-isobutyric acid including intermediates in this synthesis.