会员体验
专利管家(专利管理)
工作空间(专利管理)
风险监控(情报监控)
数据分析(专利分析)
侵权分析(诉讼无效)
联系我们
交流群
官方交流:
QQ群: 891211   
微信请扫码    >>>
现在联系顾问~
热词
    • 5. 发明授权
    • Preparation of 2-(2-2-dimethyl-3-buten-1-yl)-2-oxaxolines
    • 2-(2-2-二甲基-3-丁烯-1-基)-2-恶唑啉的制备
    • US4426529A
    • 1984-01-17
    • US342276
    • 1982-01-25
    • Manfred JautelatDieter Arlt
    • Manfred JautelatDieter Arlt
    • C07D263/04C07D263/12C07D263/10
    • C07D263/04C07D263/12
    • A process comprising reacting a 2-methyloxazoline with a 3-methyl-2-buten-1-yl derivative of the formula ##STR1## in which X is halide, sulphonate or phosphate thereby to produce a 2-methyl-3-(3-methyl-2-butenyl)-2-oxazolinium salt of the formula ##STR2## reacting the oxazolinium salt with an alcoholate of the formulaR.sup.5 --O--M (V)in which M is one equivalent of an alkali metal or alkaline earth metal cation, to produce an oxazolidine of the formula ##STR3## pyrolyzing the oxazolidine to produce a 2-methyl-3-(3-methyl-2-butenyl)-oxazolindine of the formula ##STR4## and heating the 2-methylene-3-(3-methyl-2-butenyl)-oxazolidine to produce a 2-(2,2-dimethyl-3-buten-1-yl)-2-oxazoline.
    • 一种方法,包括使2-甲基恶唑啉与式(VII)的3-甲基-2-丁烯-1-基衍生物反应,其中X为卤化物,磺酸盐或磷酸盐,从而产生2-甲基-3- (Ⅳ)的(3-甲基-2-丁烯基)-2-恶唑啉盐(Ⅳ)使恶唑啉盐与式为R5-OM(Ⅴ)的醇化物反应,其中M为1当量的碱金属或 碱土金属阳离子,以产生式(III)的恶唑烷,式(III)热解恶唑烷以产生式“IMAGE”的2-甲基-3-(3-甲基-2-丁烯基) - 恶唑啉并加热 2-亚甲基-3-(3-甲基-2-丁烯基) - 恶唑烷,得到2-(2,2-二甲基-3-丁烯-1-基)-2-恶唑啉。
    • 8. 发明授权
    • Preparation of 3-vinyl-substituted 2,2-dimethylcyclopropane-1-carboxylic
acids and esters and intermediates therefor
    • 制备3-乙烯基取代的2,2-二甲基环丙烷-1-羧酸及其酯及其中间体
    • US4992577A
    • 1991-02-12
    • US355578
    • 1989-05-22
    • Reinhard LantzschDieter ArltManfred Jautelat
    • Reinhard LantzschDieter ArltManfred Jautelat
    • C07C45/63C07C45/72C07C49/227C07C49/235C07C51/00
    • C07C45/72C07C45/63C07C49/227C07C49/235C07C51/00
    • A process for preparing a compound of the formula ##STR1## in which Y is halogen, alkyl or cycloalkyl optionally substituted by halogen or C.sub.1-4 -alkoxy, alkenyl optionally substituted by halogen, aryl, heteroaryl or alkoxycarbonyl,X is hydrogen, halogen or optionally halogen-substituted alkyl, orX and Y, together with the adjacent C atom, form a saturated cycloalkphatic ring having up to 6 C atoms, andR is hydrogen or C.sub.1 -C.sub.4 -alkyl, comprising reacting an aldehyde of the formula ##STR2## with 2-methylbutan-3-one of the formula ##STR3## in the presence of a hydrohalic acid thereby to form a 4,4-dimethyl-3-halogeno-1-hexen-5-one of the formula ##STR4## in which Hal is halogen, halogenating said compound to produce a compound of the formula ##STR5## and reacting said compound with a base of the formulaR--OM (VI)in whichM is one equivalent of an alkali or alkaline earth metal ion.Compounds IV and V are new. By suitable conditions the trans isomer is selectively produced.
    • 制备式(I)化合物的方法,其中Y为卤素,任选被卤素或C 1-4 - 烷氧基取代的烷基或环烷基,任选被卤素,芳基,杂芳基或烷氧基羰基取代的链烯基,X为氢 ,卤素或任选的卤素取代的烷基,或X和Y与相邻的C原子一起形成具有至多6个C原子的饱和环烷基环,R是氢或C 1 -C 4烷基,包括使 式(II)化合物与式(III)的2-甲基丁-3-酮在氢卤酸存在下反应,从而形成4,4-二甲基-3-卤代-1-己烯-5 其中Hal是卤素的式(Ⅳ)化合物,卤化所述化合物以制备下式化合物(Ⅴ),并使所述化合物与式R-OM(Ⅵ)的碱反应在 其中M为1当量碱金属或碱土金属离子。 化合物IV和V是新的。 通过合适的条件选择性地制备反式异构体。