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    • 15. 发明授权
    • Aldehyde process
    • 醛过程
    • US5801292A
    • 1998-09-01
    • US623072
    • 1996-03-28
    • Thomas J. KwokWindell C. Watkins
    • Thomas J. KwokWindell C. Watkins
    • B01J21/10C07B61/00C07C29/141C07C45/72C07C45/74C07C45/75C07C47/19C07C45/45
    • C07C29/141C07C45/72C07C45/74C07C45/75
    • A process for condensing aldehydes where an aldehyde having an a hydrogen and having the formula R.sub.1 CHO, wherein R.sub.1 is selected from alkyl having one to twelve carbon atoms and aralkyl having one to fourteen carbon atoms, is combined with hydrated MgO to form a reaction product comprising an aldol of said aldehyde, the unsaturated aldehyde derived by dehydration of said aldol, or mixtures thereof. In a second embodiment, a first composition selected from aldehydes containing an a hydrogen and having the formula R.sub.1 CHO, wherein R.sub.1 is as defined above, is combined with a second composition selected from aldehydes having the formula R.sub.2 CHO, wherein R.sub.2 is selected from H, alkyl having one to twelve carbon atoms, and aralkyl having one to fourteen carbon atoms, and with hydrated MgO, to form a reaction product mixture comprising an aldol of said aldehyde, the unsaturated aldehyde derived by dehydration of said aldol, or mixtures thereof. The aldol or aldehyde formed may be separated from the reaction product mixture, and recovered or treated as desired, or the reaction product mixture may be further directly treated, such as by hydrogenation, to produce a desired product admixture.
    • 一种用于冷凝醛的方法,其中具有氢且具有式R 1 CHO的醛,其中R 1选自具有1至12个碳原子的烷基和具有1至14个碳原子的芳烷基的醛与水合MgO组合以形成反应产物, 所述醛的醛醇,由所述醛醇脱水衍生的不饱和醛,或其混合物。 在第二个实施方案中,选自含有氢并具有式R 1 CHO(其中R 1如上定义)的第一组合物与选自具有式R 2 CHO的醛的第二组合物组合,其中R 2选自H,烷基 具有1至12个碳原子的烷基和具有1至14个碳原子的芳烷基和与水合MgO反应,形成包含醛的醛醇的反应产物混合物,通过所述醛醇的脱水得到的不饱和醛或其混合物。 形成的醛醇醛或醛可以与反应产物混合物分离,并根据需要进行回收或处理,或者可以例如通过氢化进一步直接处理反应产物混合物以产生所需的产物混合物。
    • 18. 发明授权
    • Catalytic preparation of condensation products of formaldehyde
    • 催化制备甲醛缩合产物
    • US5585496A
    • 1996-12-17
    • US570557
    • 1995-12-11
    • Joaquim H. TelesJohann-Peter MelderEugen GehrerWolfgang HarderKlaus EbelCarsten GroeningRegina Meyer
    • Joaquim H. TelesJohann-Peter MelderEugen GehrerWolfgang HarderKlaus EbelCarsten GroeningRegina Meyer
    • B01J31/02C07B61/00C07C45/75C07C47/19C07C49/17C07D249/08C07D249/10C07D249/12C07D249/14C07D471/06
    • C07C45/75
    • A process for the catalytical preparation of condensation products of formaldehyde, in which formaldehyde or a formaldehyde-forming compound is caused to undergo reaction using a catalyst which has been produced, in the presence of an auxiliary base, from a triazolium salt of formula I ##STR1## in which R.sup.1 and R.sup.3 are the same or different and stand for aliphatic groups having from 1 to 30 carbon atoms, optionally substituted aryl groups, optionally substituted aralkyl groups, and/or optionally substituted heteroaryl groups,R.sup.2 represents hydrogen, the hydroxymethylene group --CH.sub.2 OH or the hydroxy-hydroxymethylene-methylidyne group --CH(OH)(CH.sub.2 OH), andR.sup.4 denotes hydrogen, a halogen atom, a nitro or cyano group, an aliphatic group having from 1 to 30 carbon atoms, an optionally substituted aryl group, an optionally substituted aralkyl group, an optionally substituted heteroaryl group, an alkoxy group --OR.sup.5, a thioether group --SR.sup.6, an amino group --NR.sup.7 R.sup.8, an acyl group--COR.sup.9 or an ester group --COOR.sup.10, where R.sup.5, R.sup.6, R.sup.7, R.sup.8, and R.sup.9 stand for radicals such as those stated above for R.sup.1, and R.sup.10 is a C.sub.1 -C.sub.10 alkyl group or an optionally substituted aryl or aralkyl group, orR.sup.3 and R.sup.4 together form a C.sub.3 -C.sub.5 alkylene or C.sub.3 -C.sub.5 alkenylene group or a C.sub.6 -C.sub.14 alkylene group, or a C.sub.7 -C.sub.14 aralkylene or C.sub.8 -C.sub.14 aralkenylene bridging member, andA is the equivalent of an anion having one or more negative charges for electrical neutralization of the charge on the triazolium cation.
    • 催化制备甲醛缩合产物的方法,其中使甲醛或形成甲醛的化合物在辅助碱存在下由式I的三唑鎓盐生产的催化剂进行反应, (I)其中R1和R3相同或不同,代表具有1至30个碳原子的脂族基团,任选取代的芳基,任选取代的芳烷基和/或任选取代的杂芳基,R 2表示氢, 羟基亚甲基-CH 2 OH或羟基 - 羟基亚甲基 - 亚甲基基团-CH(OH)(CH 2 OH),R 4表示氢,卤素原子,硝基或氰基,具有1至30个碳原子的脂族基团, 取代的芳基,任选取代的芳烷基,任选取代的杂芳基,烷氧基-OR 5,硫醚基-SR 6,氨基-NR 7 R 8,酰基-C COR 9或酯gr 其中R 5,R 6,R 7,R 8和R 9分别代表上述R 1的基团,R 10是C 1 -C 10烷基或任意取代的芳基或芳烷基,或者R 3和R 4一起形成 C3-C5亚烷基或C3-C5亚烯基或C6-C14亚烷基,或C7-C14亚芳基或C8-C14芳亚烷基桥连元件,A相当于具有一个或多个负电荷用于电中和的阴离子 的三唑鎓阳离子的电荷。