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1. 发明授权

US4647676A Process for the isolation of 2,2-dimethyl-7-hydroxy-coumaran 失效
标题翻译：分离2,2-二甲基-7-羟基 - 香豆素的方法
公开(公告)号：US4647676A
公开(公告)日：1987-03-03
申请号：US612962
申请日：1984-05-23
申请人： Manfred Lenthe , Udo Allenbach , Gerhard Buttner , Karl-Friedrich Christmann
发明人： Manfred Lenthe , Udo Allenbach , Gerhard Buttner , Karl-Friedrich Christmann
IPC分类号： C07C41/16 , C07C41/38 , C07C43/23 , C07D307/86
CPC分类号： C07C41/16 , C07C41/38
摘要： A process for the isolation of a dihydroxybenzenemonoether from a reaction mixture containing solvent, ether and unreacted dihydroxybenzene, comprising contacting the reaction mixture with at least one hydrocarbon which is not miscible or only partially miscible with the reaction mixture, the ether selectively entering the hydrocarbon. Advantageously the reaction for the preparation of the monoether is carried out in an alcohol, a ketone, a dipolar aprotic solvent or a polyhydroxyalkyl ether, or a mixture thereof with water, the hydrocarbon used as extracting agent has a boiling point between about 80.degree. and 300.degree. C., and the extraction is carried out in the presence of water whereby there is an increase in the selectivity of the extraction.
摘要翻译：一种从含有溶剂，醚和未反应的二羟基苯的反应混合物中分离出二羟基苯氰醚的方法，包括使反应混合物与至少一种与反应混合物不混溶或仅部分混溶的烃接触，醚选择性地进入烃。有利地，用于制备单醚的反应在醇，酮，偶极非质子溶剂或多羟基烷基醚或其与水的混合物中进行，用作萃取剂的烃的沸点在约80℃和 300℃，萃取在水的存在下进行，由此萃取的选择性增加。

2. 发明授权

US4486611A Isolation of dihydroxybenzene-monoethers from reaction mixtures 失效
标题翻译：从反应混合物中分离二羟基苯 - 单醚
公开(公告)号：US4486611A
公开(公告)日：1984-12-04
申请号：US412643
申请日：1982-08-30
申请人： Manfred Lenthe , Udo Allenbach , Gerhard Buttner , Karl-Friedrich Christmann
发明人： Manfred Lenthe , Udo Allenbach , Gerhard Buttner , Karl-Friedrich Christmann
IPC分类号： C07C41/16 , C07C41/38 , C07C43/23
CPC分类号： C07C41/16 , C07C41/38
摘要： A process for the isolation of a dihydroxybenzene-monoether from a reaction mixture containing solvent, ether and unreacted dihydroxybenzene, comprising contacting the reaction mixture with at least one hydrocarbon which is not miscible or only partially miscible with the reaction mixture, the ether selectively entering the hydrocarbon. Advantageously the reaction for the preparation of the monoether is carried out in an alcohol, a ketone, a dipolar aprotic solvent or a polyhydroxyalkyl ether, or a mixture thereof with water, the hydrocarbon used as extracting agent has a boiling point between about 80.degree. and 300.degree. C., and the extraction is carried out in the presence of water whereby there is an increase in the selectivity of the extraction.
摘要翻译：一种从含有溶剂，醚和未反应的二羟基苯的反应混合物中分离二羟基苯 - 单醚的方法，包括使反应混合物与至少一种与反应混合物不混溶或仅部分混溶的烃接触，所述醚选择性地进入烃。有利地，用于制备单醚的反应在醇，酮，偶极非质子溶剂或多羟基烷基醚或其与水的混合物中进行，用作萃取剂的烃的沸点在约80℃和 300℃，萃取在水的存在下进行，由此萃取的选择性增加。

3. 发明授权

US4321204A Preparation of certain 2-methyl-2,3-dihydro-benzofuran-7-ols 失效
标题翻译：某些2-甲基-2,3-二氢 - 苯并呋喃-7-醇的制备
公开(公告)号：US4321204A
公开(公告)日：1982-03-23
申请号：US170443
申请日：1980-07-21
申请人： Gerhard Buttner , Karl-Friedrich Christmann , Manfred Lenthe , Udo Allenbach
发明人： Gerhard Buttner , Karl-Friedrich Christmann , Manfred Lenthe , Udo Allenbach
IPC分类号： C07C41/16 , C07B61/00 , C07C41/00 , C07C43/23 , C07C67/00 , C07D307/86
CPC分类号： C07C43/23 , C07D307/86
摘要： In the preparation of a 7-hydroxycoumaran of the formula ##STR1## in which Z is a hydrogen atom or a substituent which is inert under the subsequent reaction conditions,R.sup.1 is a hydrogen atom or a C.sub.1 to C.sub.4 -alkyl radical, andn is 1, 2 or 3wherein a pyrocatechol of the formula ##STR2## is reacted with an allyl compound of the formula ##STR3## in which Y is a halogen atom, a C.sub.1 to C.sub.4 -alkyl-sulphonate radical or an aryl-sulphonate radical,to form the mono-ether of the pyrocatechol in a first stage, and in a second stage, of the pyrocatechol monoether formed in the first stage is rearranged to a 3-alkenylpyrocatechol, and in a third stage the 3-alkenylpyrocatechol formed in the second stage, is cyclized, the improvement which comprises stages. (b) carrying out the second stage at a pH of about 2-8. Advantageously glycol monomethyl ether is employed as the solvent in all stages and the third stage is carried out with a residence time of about 1-30 minutes and with a narrow residence time spectrum corresponding to a Bodenstein-index 5, optionally in the presence of an iron salt.
摘要翻译：在制备其中Z为氢原子的式“IMAGE”的7-羟基香豆素或在随后的反应条件下为惰性的取代基时，R 1为氢原子或C 1至C 4 - 烷基，n为 1,2或3其中式IMAMA的邻苯二酚与其中Y是卤素原子，C1-C4烷基磺酸根基或芳基 - 磺酸根基团的式“IMAGE”的烯丙基化合物反应，在第一阶段中形成邻苯二酚的单醚，在第二阶段将第一阶段中形成的邻苯二酚单醚重新排列为3-链烯基邻苯二酚，第三阶段中形成的3-链烯基邻苯二酚阶段，循环，改进包括阶段。（b）在约2-8的pH下进行第二阶段。在所有阶段中，优选使用二醇单甲醚作为溶剂，第三阶段以约1-30分钟的停留时间和对应于博登斯坦指数5的窄停留时间光谱进行，任选地在铁盐

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