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公开(公告)号:US4720591A
公开(公告)日:1988-01-19
申请号:US941062
申请日:1986-12-12
IPC分类号: C07C17/00 , C07C21/19 , C07C22/04 , C07C29/58 , C07C45/61 , C07C45/64 , C07C49/687 , C07C49/697 , C07C49/80 , C07C49/637
CPC分类号: C07C49/80 , C07C17/00 , C07C21/19 , C07C22/04 , C07C29/58 , C07C45/61 , C07C45/64 , C07C49/687 , C07C49/697 , C07C67/297 , C07B2200/09 , C07C2101/18
摘要: Chloro-olefins which contain a group of the formula ##STR1## where Y is chlorine or hydrogen, which are prepared by a process in which a trichloromethyl compound which contains a group of the general formula ##STR2## where X is hydrogen or an organic radical, is reduced with a chromium(II) salt in an aqueous medium.
摘要翻译: 含有其中Y为氯或氢的式II的基团的氯代烯烃,其通过以下方法制备:其中含有通式为I的基团的三氯甲基化合物,其中X为氢或 有机基团在水性介质中用铬(II)盐还原。
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公开(公告)号:US4681977A
公开(公告)日:1987-07-21
申请号:US749423
申请日:1985-06-27
IPC分类号: C07C17/00 , C07C21/19 , C07C22/04 , C07C29/58 , C07C45/61 , C07C45/64 , C07C49/687 , C07C49/697 , C07C49/80 , C07C67/317
CPC分类号: C07C49/80 , C07C17/00 , C07C21/19 , C07C22/04 , C07C29/58 , C07C45/61 , C07C45/64 , C07C49/687 , C07C49/697 , C07C67/297 , C07B2200/09 , C07C2101/18
摘要: Chloro-olefins which contain a group of the formula ##STR1## where Y is chlorine or hydrogen, which are prepared by a process in which a trichloromethyl compound which contains a group of the general formula ##STR2## where X is hydrogen or an organic radical, is reduced with a chromium(II) salt in an aqueous medium.
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3.
公开(公告)号:US4699698A
公开(公告)日:1987-10-13
申请号:US895171
申请日:1986-08-11
申请人: Dieter Degner , Eberhard Steckhan
发明人: Dieter Degner , Eberhard Steckhan
摘要: Preparation of aromatic carboxylic acid ortho-esters of the formula I ##STR1## where R is C.sub.1 -C.sub.4 -alkyl and R.sup.1 is H, halogen, alkyl, aryl, heteroaryl, alkoxy, aryloxy, acyl, acyloxy or CN, by electro-oxidizing benzene derivatives of the formula II ##STR2## where R.sup.2 is CH.sub.3 or CH(OR.sub.2), in the presence of an alcohol ROH, a halogenated triarylamine compound and a base, and novel ortho-trialkyl 4-tert-butoxybenzoates, where alkyl is of 1 to 4 carbon atoms.Ortho-trialkyl 4-tert-butoxybenzoates are scents and are also used to prepared p-hydroxybenzoic acid esters.
摘要翻译: 其中R是C 1 -C 4 - 烷基且R 1是H,卤素,烷基,芳基,杂芳基,烷氧基,芳氧基,酰基,酰氧基或CN的芳族羧酸原酸, 在醇ROH,卤代三芳基胺化合物和碱的存在下,氧化式II的苯衍生物,其中R 2是CH 3或CH(OR 2),和新的邻位三叔丁基4-叔丁氧基苯甲酸酯,其中烷基 具有1至4个碳原子。 4-叔丁氧基苯甲酸正三烷基酯是气味,也用于制备对羟基苯甲酸酯。
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4.
公开(公告)号:US4526661A
公开(公告)日:1985-07-02
申请号:US499261
申请日:1983-05-31
申请人: Eberhard Steckhan , Rainer Wienkamp
发明人: Eberhard Steckhan , Rainer Wienkamp
IPC分类号: C07H19/207 , C25B3/04
CPC分类号: C07H19/207 , C25B3/04
摘要: Nicotinamide adenine dinucleotide (NAD.sup..sym.) is electrochemically hydrogenated to NADH in aqueous solution and in the presence of a metal complex as an electron carrier.
摘要翻译: 烟酰胺腺嘌呤二核苷酸(NAD(+))在水溶液中和作为电子载体的金属络合物的存在下电化学氢化成NADH。
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公开(公告)号:US4612092A
公开(公告)日:1986-09-16
申请号:US781354
申请日:1985-09-27
IPC分类号: C25B3/02
CPC分类号: C25B3/02
摘要: Aromatic carboxylates are prepared by electrochemical oxidation of the corresponding methyl benzenes or benzaldehyde dialkyl acetals in the presence of an alkanol and of a halogenated triarylamine derivative.
摘要翻译: 芳族羧酸盐通过在烷醇和卤代三芳基胺衍生物的存在下电化学氧化相应的甲基苯或苯甲醛二烷基缩醛来制备。
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