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公开(公告)号：US4880546A
公开(公告)日：1989-11-14
申请号：US285464
申请日：1988-12-16
CPC分类号： C01G51/003 , C01G55/001 , C07C45/50 , C22B3/0047 , C22B3/0051 , C22B3/0075 , C22B3/0077 , Y02P10/234
摘要： Process for the recovery of a transition metal from an aqueous solution containing a complex of the transition metal with a cyclic phosphite by hydrolyzing the cyclic phosphite, contacting the hydrolysis reaction mixture with a compound forming a water-stable complex with the transition metal, extracting the reaction mixture thus formed with an organic extraction agent for the water-stable complex and separating an organic extract phase containing the transition metal from an aqueous raffinate phase. The process is particularly suitable for the recovery of the Rh or Co from spent hydroformylation catalysts and of Pd from spent carbonylation catalysts.
摘要翻译： 通过水解环状亚磷酸酯从含有过渡金属配合物的水溶液中回收过渡金属的方法，使水解反应混合物与形成与过渡金属形成水稳定性络合物的化合物接触，提取 由此形成水溶性复合物的有机萃取剂并从含水萃余液相中分离含有过渡金属的有机提取相。 该方法特别适用于从过量羰基化催化剂中回收Rh或Co，以及从废羰基化催化剂中回收Pd。
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公开(公告)号：US4435582A
公开(公告)日：1984-03-06
申请号：US252648
申请日：1981-04-09
IPC分类号： C07D323/00 , C07D319/12
CPC分类号： C07D323/00
摘要： This invention deals with a process for the preparation of macrocyclic polyethers of the general formula: ##STR1## wherein x is 1-9; k is 0 or 1 and each R, which may be the same or different, represents a hydrogen atom or a lower alkyl or aryl group, or two R bonded to two adjacent carbon atoms form together with these carbon atoms a cyclic hydrocarbyl configuration, by reacting a compound of the general formula: ##STR2## with a sulphonyl halide in the presence of a base and a halogen-containing solvent, preferably chlorobenzene. The process is of special interest for the manufacture of 18-crown-6.
摘要翻译： 本发明涉及制备通式如下的大环聚醚的方法：其中x为1-9; k为0或1，并且每个R可以相同或不同，表示氢原子或低级烷基或芳基，或两个与两个相邻碳原子键合的R与这些碳原子一起形成环状烃基构型，由 在碱和含卤素的溶剂，优选氯苯的存在下，使通式为：的化合物与磺酰卤反应。 这个过程对于18-crown-6的制造是特别有意义的。
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