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1. 发明授权

US06300515B1 Process for the isomerization of allylic compounds 有权
标题翻译：异构化烯丙基化合物的方法
公开(公告)号：US06300515B1
公开(公告)日：2001-10-09
申请号：US09550798
申请日：2000-04-17
申请人： Mikael Retboll , Yoshinori Hara , Hisao Urata , Hironobu Ohno
发明人： Mikael Retboll , Yoshinori Hara , Hisao Urata , Hironobu Ohno
IPC分类号： C07C6976
CPC分类号： C07B37/08 , C07C67/293 , C07C69/007 , C07C69/16
摘要： The invention provides a process that includes isomerizing at least one allylic substrate having an acyloxyl group or a hydroxyl group at the allyl position thereof, to produce a corresponding allylic isomer, wherein the isomerizing is conducted in the presence of a catalyst that includes a Group VIII-X metal compound and a phosphite compound. The invention also provides a process that includes: (1) diacetoxylating butadiene to obtain a mixture containing at least one selected from the group including 3,4-diacetoxy-1-butene, 3-butene-1,2-diolmonoacetoxylate and a mixture thereof, and at least one selected from the group including 4-diacetoxy-2-butene, acetoxy-4-hydroxy-2-butene and a mixture thereof; (2) separating, from the mixture, a portion containing at least one selected from the group including the 3,4-diacetoxy-1-butene, the 3-butene-1,2-diolmonoacetoxylate, and a mixture thereof; (3) isomerizing at least a part of the portion in the presence of a catalyst, to obtain an isomerization product mixture; (4) optionally, recirculating at least a part of the isomerization product mixture to at least one selected from the group including the isomerizing, the separating, the mixture, and combinations thereof. The processes of the present invention achieve both high conversion rates and high selectivity, and suppress the otherwise undesirable deposition of metals.
摘要翻译：本发明提供了一种方法，其包括在烯丙基位置异构化至少一个具有酰氧基或羟基的烯丙基底物，以产生相应的烯丙基异构体，其中异构化在包括第VIII族的催化剂存在下进行 -X金属化合物和亚磷酸酯化合物。本发明还提供了一种方法，其包括：（1）将丁二烯二酰氯化以获得含有选自包括3,4-二乙酰氧基-1-丁烯，3-丁烯-1,2-二醇单乙酰氧基化物及其混合物中的至少一种的混合物和选自4-二乙酰氧基-2-丁烯，乙酰氧基-4-羟基-2-丁烯及其混合物的组中的至少一种; （2）从混合物中分离含有选自3,4-二乙酰氧基-1-丁烯，3-丁烯-1,2-二醇单乙酰氧基化物及其混合物中的至少一种的部分; （3）在催化剂存在下异构化该部分的至少一部分，得到异构化产物混合物; （4）任选地，将至少一部分异构化产物混合物再循环至选自包括异构化，分离，混合物及其组合的组中的至少一种。本发明的方法既实现了高转化率又具有高选择性，并且抑制了其它不期望的金属沉积。

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