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公开(公告)号：US5041566A
公开(公告)日：1991-08-20
申请号：US578142
申请日：1990-09-06
申请人： Makoto Shibagaki , Kyoko Takahashi , Hideyuki Kuno , Ichiro Honda , Masataka Mori , Hajime Matsushita
发明人： Makoto Shibagaki , Kyoko Takahashi , Hideyuki Kuno , Ichiro Honda , Masataka Mori , Hajime Matsushita
IPC分类号： C07H15/203 , C07D493/08 , C07H19/01
CPC分类号： C07D493/08 , C07H19/01
摘要： Levoglucosenone is prepared by reaction sequence using 1,6-anhydro-.beta.-D-galactopyranose as a starting material. First, the starting material is reacted with ortho formate, obtaining an ortho ester of said starting material. Then, the ortho ester is placed under the conditions for a reductive elimination reaction of the ortho formate part of said ortho ester, thereby converting said ortho ester to a 1,6-anhydro-3,4-dideoxy derivative. The dideoxy derivative is placed under the conditions for oxidation of the hydroxy group of said dideoxy derivative, thereby forming levoglucosenone.
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公开(公告)号：US5420286A
公开(公告)日：1995-05-30
申请号：US163531
申请日：1993-12-09
IPC分类号： B01D15/08 , C07B57/00 , C07D401/04 , C07H17/02 , C07D401/00
CPC分类号： C07D401/04 , C07H17/02
摘要： Disclosed is a method of obtaining (S)-(-)-3-(1-methyl-2-pyrrolidinyl)-2-pyridone (2) and (R)-(+)-3-(1-methyl-2-pyrrolidinyl)-2-pyridone (3) by resolving a racemic mixture of the compounds (2) and (3). More specifically, disclosed is a method of obtaining the optically active nicotine derivatives (2) and (3) shown below, which comprises steps of binding (.+-.)-3-(1-methyl-2-pyrrolidinyl)-2-pyridone to a sugar derivative, resolving the obtained compound into two types of stereoisomers, and treating them under an acidic condition. ##STR1##
摘要翻译： 公开了一种获得（S） - （ - ） - 3-（1-甲基-2-吡咯烷基）-2-吡啶酮（2）和（R） - （+） - 3-（1-甲基-2- 吡咯烷基）-2-吡啶酮（3），通过拆分化合物（2）和（3）的外消旋混合物。 更具体地，公开了获得以下所示的光学活性尼古丁衍生物（2）和（3）的方法，其包括将（+/-） - 3-（1-甲基-2-吡咯烷基）-2-吡啶酮 与糖衍生物反应，将所得化合物分解成两种立体异构体，并在酸性条件下进行处理。 （2）
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公开(公告)号：US4841075A
公开(公告)日：1989-06-20
申请号：US129702
申请日：1987-12-07
IPC分类号： B01J21/00 , B01J21/06 , B01J23/14 , C07B61/00 , C07C41/00 , C07C41/50 , C07C41/56 , C07C43/30 , C07C43/303 , C07C67/00 , C07D317/12 , C07D317/16 , C07D317/18 , C07D317/20 , C07D317/44 , C07D317/72
CPC分类号： C07D317/72 , C07C41/56 , C07C41/58 , C07D317/12 , C07D317/16 , C07D317/20 , Y02P20/55
摘要： A method of preparing an acetal or ketal from a corresponding aldehyde or ketone is disclosed. A hydrous oxide of an element of Group IV of the Periodic Table is used as a catalyst, and the aldehyde or ketone is caused to react with an alcohol. The hydrous oxide can be obtained by partially dehydrating a hydroxide of the corresponding element. The method does not require an acid catalyst and is applicable to a carbonyl compound which is not stable in acids.
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公开(公告)号：US5210317A
公开(公告)日：1993-05-11
申请号：US768769
申请日：1991-10-17
CPC分类号： B01J21/066 , C07C45/29
摘要： Disclosed is a method of producing an aldehyde in which a primary alcohol is reacted with an oxidizing agent selected from the group consisting of ketone, aldehyde and quinone in the presence of a diluent which does not participate in the reaction, in the presence of a partially dehydrated zirconium hydroxide, so as to oxidize the primary alcohol into its corresponding aldehyde.
摘要翻译： PCT No.PCT / JP91 / 00184 Sec。 371日期1991年10月17日 102（e）日期1991年10月17日PCT 1991年2月15日提交PCT公布。 出版物WO91 / 12226 1991年8月22日公开。公开了一种制备醛的方法，其中伯醇在不参与反应的稀释剂的存在下与选自酮，醛和醌的氧化剂反应 在部分脱水的氢氧化锆的存在下，将伯醇氧化成其相应的醛。
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公开(公告)号：US4810825A
公开(公告)日：1989-03-07
申请号：US129662
申请日：1987-12-07
IPC分类号： C07B61/00 , B01J21/06 , C07B31/00 , C07B41/02 , C07C27/00 , C07C29/00 , C07C31/12 , C07C31/125 , C07C33/22 , C07C67/00
CPC分类号： C07C29/00
摘要： A method of reducing a nitrile into a corresponding alcohol is disclosed. The nitrile is caused to react with an alcohol by using a zirconium hydrous oxide as a catalyst. The zirconium hydrous oxide is obtained by partially dehydrating zirconium hydroxide. The nitrile can be reduced to the corresponding alcohol in a one-step reaction.
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公开(公告)号：US4783559A
公开(公告)日：1988-11-08
申请号：US30155
申请日：1987-03-25
IPC分类号： B01J21/04 , B01J21/06 , B01J23/00 , B01J23/10 , B01J23/14 , B01J23/20 , B01J23/74 , C07B61/00 , C07C29/136 , C07C29/14 , C07C29/143 , C07C31/02 , C07C33/22 , C07C35/08
CPC分类号： C07C29/143 , C07C29/14 , C07C2101/14 , Y02P20/52
摘要： Disclosed is a process of reduction of aldehydes or ketones by means of reaction with alcohols, in the presence of a catalyst, to produce alcohols which correspond to said respective aldehyde or ketone. A solid of partially dehydrated one or more metal hydroxides whose metal is selected from the group consists of titanium, tin, ion, aluminium, cerium, and niobium is used as the catalyst. This process can be conducted either in a gas phase or in a liquid phase.
摘要翻译： 公开了在催化剂存在下通过与醇的反应还原醛或酮的方法，以生产对应于所述相应的醛或酮的醇。 使用部分脱水的一种或多种金属氢氧化物的固体，其金属选自钛，锡，离子，铝，铈和铌作为催化剂。 该方法可以在气相或液相中进行。
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公开(公告)号：US4910177A
公开(公告)日：1990-03-20
申请号：US185041
申请日：1988-04-22
IPC分类号： B01J21/04 , B01J21/06 , B01J23/00 , B01J23/10 , B01J23/14 , B01J23/20 , B01J23/74 , C07B61/00 , C07C29/136 , C07C29/14 , C07C29/143 , C07C31/02 , C07C33/22 , C07C35/08
CPC分类号： C07C29/143 , C07C29/14 , C07C2101/14 , Y02P20/52
摘要： Disclosed is a process of reduction of aldehydes or ketones by means of reaction with alcohols, in the presence of a catalyst, to produce alcohols which correspond to said respective aldehyde or ketone. A solid of partially dehydrated one or more metal hydroxides whose metal is selected from the group consists of titanium, tin, ion, aluminum, cerium, and niobium is used as the catalyst. This process can be conducted either in a gas phase or in a liquid phase.
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公开(公告)号：US4880937A
公开(公告)日：1989-11-14
申请号：US157246
申请日：1988-02-18
IPC分类号： C07C33/22 , B01J21/06 , B01J23/14 , C07B31/00 , C07B41/02 , C07B61/00 , C07C27/00 , C07C29/147 , C07C29/149 , C07C31/12 , C07C31/125 , C07C31/135 , C07C67/00 , C07C67/03
CPC分类号： C07C29/149 , B01J21/063 , B01J21/066 , B01J23/14 , C07C2101/14
摘要： An alcohol compound is produced by reducing a carboxylic acid or an ester thereof with an alcohol in the presence of a solid catalyst. The catalyst includes a hydrous metal oxide belonging to Group IV of the Periodic Table.
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公开(公告)号：US5576467A
公开(公告)日：1996-11-19
申请号：US476327
申请日：1995-06-07
IPC分类号： B01J21/06 , C07B61/00 , C07C27/02 , C07C29/147 , C07C29/149 , C07C31/125 , C07C27/04 , C07C29/16 , C07C31/34
CPC分类号： B01J21/066 , B01J21/063 , C07C29/147 , C07C29/149
摘要： The present invention relates to a method of preparing an alcohol by reducing a carboxylic acid or a derivative thereof, more particularly, a method of preparing an alcohol by a reduction reaction in the presence of a zirconium-titanium oxide catalyst. A carboxylic acid or a carboxylic acid derivative is converted into a corresponding alcohol by a reduction reaction in the presence of a zirconium-titanium oxide catalyst using an alcohol as a hydrogen source. An alcohol can be prepared in a high yield in the present invention. To be more specific, the method of the present invention can convert a higher fatty acid or a carboxylic acid derivative, which has given a corresponding alcohol in a low yield in the presence of a zirconium catalyst alone, into the corresponding alcohol in a high yield. Further, the reaction can be performed easily, and the product can be easily separated from the catalyst.
摘要翻译： 本发明涉及一种通过还原羧酸或其衍生物制备醇的方法，更具体地说，涉及在锆 - 氧化钛催化剂存在下通过还原反应制备醇的方法。 在使用醇作为氢源的锆 - 氧化钛催化剂的存在下，通过还原反应将羧酸或羧酸衍生物转化为相应的醇。 在本发明中可以高产率制备醇。 更具体地说，本发明的方法可以将在单独的锆催化剂存在下以低收率产生相应的醇的高级脂肪酸或羧酸衍生物以高产率转化成相应的醇 。 此外，反应可以容易地进行，并且产物可以容易地与催化剂分离。
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公开(公告)号：US4871858A
公开(公告)日：1989-10-03
申请号：US129663
申请日：1987-12-07
IPC分类号： C07D295/18 , B01J21/04 , B01J21/06 , B01J21/08 , B01J21/12 , B01J29/06 , C07B31/00 , C07B43/06 , C07B61/00 , C07C67/00 , C07C231/00 , C07C231/08 , C07C231/10 , C07C233/02 , C07C233/03 , C07C233/58 , C07C233/65 , C07D295/182 , C07D401/04
CPC分类号： C07D295/182 , C07D401/04
摘要： An amine is reached with dimethyformamioe in the presence of a solid catalyst to produce a formamide corresponding to the amine. The solid catalyst includes an oxide of metals belonging to Groups III, IV and V of the Periodic Table.
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