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    • 81. 发明授权
    • Process for separating acetone from carbonylation mixtures
    • 从羰基化混合物中分离丙酮的方法
    • US4444624A
    • 1984-04-24
    • US412225
    • 1982-08-27
    • Heinz ErpenbachKlaus GehrmannWinfried LorkPeter Prinz
    • Heinz ErpenbachKlaus GehrmannWinfried LorkPeter Prinz
    • C07C45/00C07C45/49C07C45/78C07C45/82C07C45/83C07C49/08C07C67/00B01D3/40
    • C07C45/82C07C45/49C07C45/83
    • The disclosure relates to a process for separating acetone from reaction mixtures originating from the reaction of methyl acetate and/or dimethylether with carbon monoxide and optionally hydrogen in the presence of a catalyst system consisting of carbonyl complexes of noble metals of group VIII of the Periodic System of the elements, acetic acid, an organophosphorus or organonitrogen compound, methyl iodide and optionally carbonyl-yielding compounds of common metals. To this end, the disclosure provides for the reaction mixture containing acetic anhydride, acetic acid, ethylidene diacetate, methyl iodide, acetone and methyl acetate which is distilled off from the catalyst solution, or just its low boiler fraction consisting of methyl acetate, methyl iodide and acetone to be subjected wholly or partially to an extractive distillation with acetic acid and for pure methyl iodide to be distilled off; for an acetone/methyl acetate mixture to be distilled off from the acetic acid extract; for this mixture to be separated in known fashion and for the acetic acid extractant to be recycled into the extraction stage, if desired after separation of the final reaction products comprised of acetic anhydride; ethylidene diacetate and acetic acid.
    • 本公开内容涉及在由周期性系统VIII族的贵金属的羰基络合物组成的催化剂体系的存在下,从丙酸甲酯和/或二甲醚与一氧化碳和任选的氢气反应的反应混合物中分离丙酮的方法 的元素,乙酸,有机磷或有机氮化合物,甲基碘和任选的产生羰基的常见金属化合物。 为此,本公开内容提供了从催化剂溶液中蒸馏掉的乙酸酐,乙酸,亚乙基二乙酸酯,甲基碘,丙酮和乙酸甲酯的反应混合物,或仅仅是其由乙酸甲酯,甲基碘 和丙酮完全或部分地进行与乙酸的萃取蒸馏,并将纯甲基碘蒸馏出; 对于从乙酸提取物中蒸出的丙酮/乙酸甲酯混合物; 为了将该混合物以已知方式分离,并且乙酸萃取剂再循环到萃取阶段,如果需要,在分离由乙酸酐组成的最终反应产物之后; 亚乙基二乙酸酯和乙酸。
    • 89. 发明授权
    • Dioxolane derivatives
    • 二氧戊环衍生物
    • US4348322A
    • 1982-09-07
    • US242529
    • 1981-03-11
    • Philip N. EdwardsDavid M. G. Martin
    • Philip N. EdwardsDavid M. G. Martin
    • C07C45/49C07C59/66C07D317/34
    • C07D317/34C07C45/49C07C59/66
    • The invention is concerned with novel dioxolane derivatives of the formula: ##STR1## in which R.sub.a is hydrogen or (1-4C)alkyl and R.sub.b is (1-4C)alkyl or phenyl optionally bearing a halogeno substituent; their production; and their use for the manufacture of certain known anti-arthritic acids of the formula: ##STR2## and, in particular, those acids in which R.sub.a =R.sub.b =methyl or R.sub.a =ethyl and R.sub.b =phenyl, by a novel reduction process. The preferred reduction procedures involve the use of an alkali metal borohydride or cyanoborohydride in the presence of a noble metal catalyst, or the use of an .alpha.-branched alkyl or cycloalkyl Grignard agent.The use of the derivatives of formula I avoids the need for potentially toxic reagents and reactive intermediates in the previously known processes for the production of the acids of formula V.
    • 本发明涉及下式的新型二氧戊环衍生物:其中Ra为氢或(1-4C)烷基,Rb为(1-4C)烷基或任选带有卤素取代基的苯基; 他们的生产; 以及它们用于制备下式的某些已知的抗关节炎酸,特别是通过新的还原方法,其中Ra = Rb =甲基或Ra =乙基和Rb =苯基的那些酸。 优选的还原方法包括在贵金属催化剂存在下使用碱金属硼氢化物或氰基硼氢化物,或使用α-支链烷基或环烷基格氏试剂。 使用式I的衍生物避免了在以前已知的用于制备式V的酸的方法中对潜在有毒的试剂和反应性中间体的需要。
    • 90. 发明授权
    • Process for selective formation of C.sub.4 compounds and
thiol-containing catalyst system used therein
    • 用于选择性形成C4化合物和其中使用的含硫醇催化剂体系的方法
    • US4339610A
    • 1982-07-13
    • US215555
    • 1980-12-11
    • Wayne R. PretzerThaddeus P. KobylinskiJohn E. Bozik
    • Wayne R. PretzerThaddeus P. KobylinskiJohn E. Bozik
    • C07C29/32C07C45/49C07C27/22C07C45/50
    • C07C29/32C07C45/49C12C11/02Y02P20/52
    • C.sub.4 compounds including n-butanol and n-butanal are produced by reacting methanol, hydrogen, and carbon monoxide, in the presence of a cobalt catalyst selected from the group consisting of (a) a cobalt carbonyl, (b) a hydrido cobalt carbonyl and (c) a cobalt-containing material convertible to a cobalt carbonyl or a hydrido cobalt carbonyl, an iodine promotor and a thiol defined by the formula:RSHwherein R is selected from the group consisting of saturated or unsaturated, straight or branched chain alkyl radicals having from one to 24 carbon atoms, cycloalkyl radicals having from three to 40 carbon atoms, aryl radicals having from six to 20 carbon atoms, aralkyl and alkaryl radicals having from six to 40 carbon atoms and halogen substituted derivatives thereof. A high degree of selectivity towards the formation of butanol and butanal is provided by using the cobalt entity and the thiol in a molar ratio in the range of about 2:1 to about 10:1, based on elemental cobalt and sulfur. The reaction is conducted at elevated temperature and pressure conditions for a time sufficient to convert methanol to n-butanol and n-butanal.
    • 包括正丁醇和正丁醛的C 4化合物通过甲醇,氢气和一氧化碳在钴催化剂存在下制备,所述钴催化剂选自(a)羰基钴,(b)羰基钴和 (c)可转化为羰基钴或羰基钴的钴的物质,碘促进剂和由下式定义的硫醇:其中R选自饱和或不饱和的直链或支链烷基 具有1至24个碳原子,具有3至40个碳原子的环烷基,具有6至20个碳原子的芳基,具有6至40个碳原子的芳烷基和烷芳基及其卤素取代的衍生物。 基于元素钴和硫,通过使用钴实体和硫醇以约2:1至约10:1的摩尔比来提供对形成丁醇和丁醛的高度选择性。 反应在升高的温度和压力条件下进行足以将甲醇转化为正丁醇和正丁醛的时间。