A method of preparing ortho esters and 1,1-dialkoxycycloalkanes
    1.
    发明公开
    A method of preparing ortho esters and 1,1-dialkoxycycloalkanes 失效
    Verfahren zur Herstellung von Ortho-estern und 1,1-Dialkoxycycloalkanen。

    公开(公告)号:EP0627398A1

    公开(公告)日:1994-12-07

    申请号:EP94303708.5

    申请日:1994-05-24

    摘要: Ortho esters of the structure

    wherein R₁ and R₂ are different or the same alkyl moieties and can be a saturated, unsaturated, branched, unbranched or cyclic alkyl moiety of 1-3 carbon atoms, are prepared by first anhydrously reacting hydrogen cyanide or a hydrogen cyanide derivative with a secondary alkanol and hydrogen chloride in the presence of an inert organic solvent. Upon the formation of the resulting imino ether hydrochloride, more secondary alkanol is added to form the ortho esters (I). 1,1-Dialkoxycycloalkanes of the structure

    wherein R₁ and R₂ correspond to R₁ and R₂ of structure (I), and n is an integer from 4 to 9, are prepared by reacting with the imino ether hydrochloride more secondary alkanol and a cycloalkanone having 5 to 10 carbon atoms.

    摘要翻译: 其中R1和R2不同或相同的烷基部分并且可以是1-3个碳原子的饱和的,不饱和的,支链的,无支链的或环状的烷基部分的结构的正构酯通过首先使氰化氢或 具有仲烷醇和氯化氢的氰化氢衍生物在惰性有机溶剂的存在下反应。 在形成所得的亚氨基醚盐酸盐后,加入更多的仲烷醇以形成原酸酯(I)。 其中R1和R2对应于结构(I)的R1和R2,n为4至9的整数的结构的1,1-二烷氧基环烷烃通过与亚氨基醚盐酸盐更多次链烷醇和 具有5至10个碳原子的环烷酮。