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1.
公开(公告)号:US06956141B1
公开(公告)日:2005-10-18
申请号:US09913979
申请日:2000-02-22
申请人: Melanie Maas-Brunner , Jochem Henkelmann , Gerd Kaibel , Alois Kindler , Christian Knoll , Harald Rust , Christian Tragut , Manfred Stroezel , Udo Rheude , Rudolf Erich Lorenz , Juan Aiscar
发明人: Melanie Maas-Brunner , Jochem Henkelmann , Gerd Kaibel , Alois Kindler , Christian Knoll , Harald Rust , Christian Tragut , Manfred Stroezel , Udo Rheude , Rudolf Erich Lorenz , Juan Aiscar
IPC分类号: C07C29/17 , C07C29/42 , C07C33/042 , C07C33/04 , C07C33/044 , C07C33/046
CPC分类号: C07C29/42 , C07C29/172 , Y02P20/582 , C07C33/044 , C07C33/042 , C07C31/20
摘要: A process for preparing at least one unsaturated alcohol (B) comprises the steps (I) to (III) below: (I) reaction of at least one alkali metal hydroxide or alkaline earth metal hydroxide with at least one alcohol (A) in at least one organic solvent (L) to give a mixture (G-I) comprising at least the alcohol (A), the solvent (L) and an alkoxide (AL); (II) reaction of at least one carbonyl compound of the formula R—CO—R′ with at least one alkyne of the formula R″—C≡C—H and the mixture (G-I) obtained in step (I) to give a mixture (G-II) comprising at least the alcohol (A), the solvent (L) and an unsaturated alcohol (B); (III) distillation of the mixture (G-II) obtained in step (II) to give the alcohol or alcohols (B) and a mixture (G-III) comprising the solvent (L) and the alcohol (A), wherein the solvent (L) obtained in step (III) and the alcohol (A) obtained in step (III) are recycled as a mixture to step (I).
摘要翻译: 一种制备至少一种不饱和醇(B)的方法包括下列步骤(I)至(III):(I)至少一种碱金属氢氧化物或碱土金属氢氧化物与至少一种醇(A)在 至少一种有机溶剂(L),得到至少包含醇(A),溶剂(L)和醇盐(AL)的混合物(GI) (II)至少一种式R-CO-R'的羰基化合物与至少一种式R'-C≡CH的炔和步骤(I)中获得的混合物(GI)的反应,得到混合物 至少包含醇(A),溶剂(L)和不饱和醇(B)的化合物(G-II); (II)中获得的混合物(G-II)的蒸馏(III),得到醇或醇(B)和包含溶剂(L)和醇(A)的混合物(G-III),其中 将步骤(III)中获得的溶剂(L)和步骤(III)中获得的醇(A)作为步骤(I)的混合物再循环。
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公开(公告)号:US06504064B1
公开(公告)日:2003-01-07
申请号:US09884969
申请日:2001-06-21
申请人: Jochem Henkelmann , Heike Becker , Juan Aiscar , Boris A. Trofimov , Nina K. Gusarova , Ludmilla A. Oparina
发明人: Jochem Henkelmann , Heike Becker , Juan Aiscar , Boris A. Trofimov , Nina K. Gusarova , Ludmilla A. Oparina
IPC分类号: C07C4106
摘要: Enol ethers of the formula (I) where R1 to R3 are each, independently of one another, hydrogen or a carbon-containing organic radical and R4 is an unsubstituted or substituted alkyl radical, are prepared by reacting alcohols of the formula (II) R4—OH (II), with alkynes of the formula (IlIa), alkadienes of the formula (IIIb) R1—C≡C—CHR2R3 (IIIa), R1—CH═C═CR2R3 (IIIb) or mixtures thereof, where R1 to R4 are as defined above, in the presence of an alkali metal alkoxide and a polar, aprotic solvent.
摘要翻译: 其中R 1至R 3各自独立地为氢或含碳有机基团且R 4为未取代或取代的烷基的式(I)的烯醇醚通过使式(II)的醇与 在碱金属醇盐和极性非质子溶剂的存在下,式(IIIa)的炔,式(IIIb)的链二烯或其混合物,其中R 1至R 4如上定义。
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