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1. 发明授权

US4978766A Process for producing 2-hydroxymethylene-3,3-dialkoxypropanenitrile alkali metal salt and process for obtaining alcoholic slurry of said compound from its synthetic reaction mixture 失效
标题翻译：制备2-羟基亚甲基-3,3-二烷氧基丙烯腈碱金属盐的方法和从其合成反应混合物中获得所述化合物的醇浆料的方法
公开(公告)号：US4978766A
公开(公告)日：1990-12-18
申请号：US302059
申请日：1989-01-25
申请人： Keigo Nishihira , Shuzo Fujikawa , Masayoshi Yamashita
发明人： Keigo Nishihira , Shuzo Fujikawa , Masayoshi Yamashita
IPC分类号： C07C253/30 , C07C253/34 , C07C255/07 , C07C255/16
CPC分类号： C07C255/00
摘要： There are disclosed a process for producing a 2-hydroxy-methylene-3,3dialkoxypropanenitrile alkali metal salt (ALVM.sub.2) represented by the formula (I): ##STR1## wherein R represents a lower alkyl group having 1 to 4 carbon atoms and M represents an alkali metal,which comprises allowing a 3,3-dialkoxypropanenitrile represented by the formula (II):(RO).sub.2 CHCH.sub.2 CN (II)wherein R is the same as defined above,to react with carbon monoxide in a lower alcoholic solution of an alkali metal lower alkoxide; and a process for obtaining ALVM.sub.2 -alcohlic slurry, which comprises adding a lower alcohol having 1 to 4 carbon atoms to a synthetic reaction mixture containing ALVM.sub.2 represented by the above formula (I) and methyl formate and heating the mixture to 30.degree. to 70.degree. C., thereby taking methyl formate out of the system.

2. 发明授权

US4892948A 2-methyl-4-amino-5-aminomethylpyrimidine carbonate, process for preparing the same and method of purification of 2-methyl-4-amino-5-aminomethylpyrimidine using the same 失效
标题翻译： 2-甲基-4-氨基-5-氨基甲基嘧啶碳酸酯，其制备方法和使用其制备2-甲基-4-氨基-5-氨基甲基嘧啶的纯化方法
公开(公告)号：US4892948A
公开(公告)日：1990-01-09
申请号：US186167
申请日：1988-04-26
申请人： Keigo Nishihira , Masayoshi Yamashita , Hiroshi Yoshida
发明人： Keigo Nishihira , Masayoshi Yamashita , Hiroshi Yoshida
IPC分类号： C07D239/42
CPC分类号： C07D239/42
摘要： Disclosed are a 2-methyl-4-amino-5-aminomethylpyrimidine carbonate which is a novel compound, a process for preparing the same which comprises subjecting 2-methyl-4-amino-5-aminomethylpyrimidine to reaction with carbon dioxide in a lower aliphatic alcohol, and a simple method of purification of 2-methyl-4-amino-5-aminomethylpyrimidine by using the carbonate thereof.

3. 发明授权

US4256908A Process for preparing diesters of malonic acid 失效
标题翻译：丙二酸二酯的制备方法
公开(公告)号：US4256908A
公开(公告)日：1981-03-17
申请号：US50762
申请日：1979-06-21
申请人： Kenji Nishimura , Shinichi Furusaki , Yasushi Shiomi , Kozo Fujii , Keigo Nishihira , Masayoshi Yamashita
发明人： Kenji Nishimura , Shinichi Furusaki , Yasushi Shiomi , Kozo Fujii , Keigo Nishihira , Masayoshi Yamashita
IPC分类号： C07C67/46 , C07C69/38 , C07C67/36 , C07C67/38
CPC分类号： C07C67/46
摘要： A process for preparing a diester of malonic acid which comprises reacting ketene and carbon monoxide with an ester of nitrous acid catalytically in the presence of metallic palladium or a salt thereof.
摘要翻译：一种制备丙二酸二酯的方法，其包括在金属钯或其盐的存在下，将乙烯酮和一氧化碳与亚硝酸酯催化反应。

4. 发明授权

US4138587A Process for the preparation of dialkyl oxalates 失效
标题翻译：草酸二烷基酯的制备方法
公开(公告)号：US4138587A
公开(公告)日：1979-02-06
申请号：US817996
申请日：1977-07-22
申请人： Toshiharu Yamasaki , Masao Eguchi , Schinichiro Uchiumi , Keigo Nishihira , Masayoshi Yamashita , Hiroshi Itatani
发明人： Toshiharu Yamasaki , Masao Eguchi , Schinichiro Uchiumi , Keigo Nishihira , Masayoshi Yamashita , Hiroshi Itatani
IPC分类号： B01J23/00 , B01J27/00 , B01J29/00 , C07B61/00 , C07C69/36 , C07C67/36
CPC分类号： C07C69/36
摘要： A process for the preparation of dialkyl oxalates by reacting an aliphatic alcohol with carbon monoxide under pressure, which comprises carrying out the reaction in the presence of(a) a catalyst comprising a platinum group metal or a salt thereof, and(b) an accelerator composed of one or more compounds selected from the group consisting of nitric acid and nitrogen oxides.
摘要翻译：一种通过使脂肪醇与一氧化碳在压力下反应来制备草酸二烷基酯的方法，该方法包括在（A）包含铂族金属盐或其盐的催化剂的存在下进行反应，和（B）加速器由组成的硝酸和硝酸氧化物组合选出的一种或多种化合物。

5. 发明授权

US5037982A Method of purifying 2-methyl-4-amino-5-aminomethylpyrimidine 失效
标题翻译： 2-甲基-4-氨基-5-氨基甲基嘧啶的纯化方法
公开(公告)号：US5037982A
公开(公告)日：1991-08-06
申请号：US408771
申请日：1989-09-18
申请人： Keigo Nishihira , Masayoshi Yamashita , Hiroshi Yoshida
发明人： Keigo Nishihira , Masayoshi Yamashita , Hiroshi Yoshida
IPC分类号： C07D239/42
CPC分类号： C07D239/42
摘要： A method of purifying 2-methyl-4-amino-5-aminomethylpyrimidine by heating the carbonate thereof. Preferably the heating is carried out in water or a specified solvent.

6. 发明授权

US4229589A Process for preparing a diester of oxalic acid 失效
标题翻译：草酸二酯的制备方法
公开(公告)号：US4229589A
公开(公告)日：1980-10-21
申请号：US938343
申请日：1978-08-31
申请人： Kenji Nishimura , Shinichiro Uchiumi , Kozo Fujii , Keigo Nishihira , Masayoshi Yamashita , Hiroshi Itatani
发明人： Kenji Nishimura , Shinichiro Uchiumi , Kozo Fujii , Keigo Nishihira , Masayoshi Yamashita , Hiroshi Itatani
IPC分类号： C07C69/36 , B01J23/00 , B01J27/00 , B01J31/00 , C07B61/00 , C07C67/36 , C07C68/00
CPC分类号： C07C67/36 , C07C68/00
摘要： A process for preparing a diester of oxalic acid which comprises bringing carbon monoxide into contact with an ester of nitrous acid in the liquid phase, in the presence of metallic palladium or a salt thereof, preferably with introduction of a gas containing molecular oxygen into the reaction system, more preferably with further incorporation of an alcohol in the reaction system.
摘要翻译：一种制备草酸二酯的方法，其包括在金属钯或其盐的存在下使一氧化碳与亚硝酸的酯在液相中接触，优选在反应中引入含有分子氧的气体系统，更优选在反应体系中进一步引入醇。

7. 发明授权

US5648510A Process for preparation of diaryl carbonate 失效
标题翻译：碳酸二芳基酯的制备方法
公开(公告)号：US5648510A
公开(公告)日：1997-07-15
申请号：US627897
申请日：1996-04-03
申请人： Katsumasa Harada , Yoichi Imbe , Keigo Nishihira , Shuji Tanaka , Satoru Fujitsu , Ryoji Sugise , Koichi Kashiwagi , Toshihiko Sumida
发明人： Katsumasa Harada , Yoichi Imbe , Keigo Nishihira , Shuji Tanaka , Satoru Fujitsu , Ryoji Sugise , Koichi Kashiwagi , Toshihiko Sumida
IPC分类号： C07C67/333 , C07C68/00 , C07D307/68 , C07D333/38 , C07C69/96
CPC分类号： C07C67/333 , C07C68/00 , C07D307/68 , C07D333/38
摘要： A diaryl carbonate is prepared at a high yield and a high selectivity by heating a diaryl oxalate in the presence of an organic phosphorous compound to release carbon monoxide therefrom. A halogen atom-containing compound can be employed in combination with the organic phosphorous compound.
摘要翻译：通过在有机磷化合物的存在下加热草酸二芳基酯从而释放一氧化碳，以高产率和高选择性制备碳酸二芳基酯。含卤原子的化合物可以与有机磷化合物组合使用。

8. 发明授权

US6018072A Process for producing a diaryl oxalate 失效
标题翻译：制备草酸二芳基酯的方法
公开(公告)号：US6018072A
公开(公告)日：2000-01-25
申请号：US875823
申请日：1997-08-07
申请人： Keigo Nishihira , Shuji Tanaka , Yuki Nishida , Satoru Fujitsu
发明人： Keigo Nishihira , Shuji Tanaka , Yuki Nishida , Satoru Fujitsu
IPC分类号： C07C67/02 , C07C69/34
CPC分类号： C07C67/02
摘要： The present invention relates to a process for producing a diaryl oxalate, characterized in that an alkylaryl oxalate is subjected to a disproportionation reaction in the presence of a disproportionation catalyst, thereby to produce a diaryl oxalate while removing a by-product comprising a dialkyl oxalate.The production process of the present invention is advantageous in that the kinds of the by-products are fewer than that in conventional production process for diaryl oxalate, and thus can be practically utilized in industry, and the diaryl oxalates such as diphenyl oxalate, produced by the production process of the present invention are very important industrial materials for producing chemical products such as carbamates.
摘要翻译： PCT No.PCT / JP96 / 03636 Sec。 371日期1997年8月7日 102（e）日期1997年8月7日PCT 1996年12月12日PCT PCT。公开号WO97 / 21660 日期：1997年6月19日本发明涉及草酸二芳基酯的制备方法，其特征在于草酸烷基芳基酯在歧化催化剂存在下进行歧化反应，从而产生草酸二芳基酯，同时除去副产物包括草酸二烷基酯。本发明的制造方法的优点在于副产物的种类比常规的草酸二芳基酯的制备方法少，因此可以实际应用于工业中，草酸二芳基酯如草酸二苯酯，由本发明的生产方法是用于生产化学产品如氨基甲酸酯的非常重要的工业材料。

9. 发明授权

US5892089A Process for preparing diaryl carbonate 失效
标题翻译：制备碳酸二芳基酯的方法
公开(公告)号：US5892089A
公开(公告)日：1999-04-06
申请号：US944231
申请日：1997-10-06
申请人： Katsumasa Harada , Ryoji Sugise , Koichi Kashiwagi , Yoichi Imbe , Takashi Doi , Keigo Nishihira , Shuji Tanaka , Hirofumi Ii
发明人： Katsumasa Harada , Ryoji Sugise , Koichi Kashiwagi , Yoichi Imbe , Takashi Doi , Keigo Nishihira , Shuji Tanaka , Hirofumi Ii
IPC分类号： C07C68/00
CPC分类号： C07C68/00
摘要： A process for preparing a diaryl carbonate from a diaryl oxalate in a liquid phase by decarbonylation is conducted by the steps of:1) performing a decarbonylation reaction of a diaryl oxalate in the presence of an organic phosphorus compound catalyst to give a reaction mixture of a diaryl carbonate and the organic phosphorus compound catalyst;2) recovering the diaryl carbonate from the reaction mixture; and3) performing a decarbonylation reaction of a diaryl oxalate in the presence of the reaction mixture from which the diaryl carbonate has been recovered and to which a halogen atom-containing compound is added, to give a reaction mixture of a diaryl carbonate and the organic phosphorus compound catalyst.
摘要翻译：通过脱羰由草酸二芳基酯在液相中制备碳酸二芳基酯的方法是通过以下步骤进行的：1）在有机磷化合物催化剂存在下进行草酸二芳基酯的脱羰基化反应，得到碳酸二芳酯和有机磷化合物催化剂; 2）从反应混合物中回收碳酸二芳基酯; 和3）在已经回收了碳酸二芳基酯并且含有含卤原子的化合物的反应混合物存在下进行草酸二芳酯的脱羰基反应，得到碳酸二芳基酯和有机物的反应混合物磷化合物催化剂。

10. 发明授权

US5514829A Process for continuously producing dimethyl carbonate 失效
标题翻译：连续生产碳酸二甲酯的方法
公开(公告)号：US5514829A
公开(公告)日：1996-05-07
申请号：US344724
申请日：1994-11-23
申请人： Keigo Nishihira , Shinichi Yoshida , Shuji Tanaka
发明人： Keigo Nishihira , Shinichi Yoshida , Shuji Tanaka
IPC分类号： B01J8/06 , C07B61/00 , C07C68/00 , C07C68/08 , C07C69/96
CPC分类号： C07C68/00
摘要： A process for producing dimethyl carbonate is carried out by a first step of catalytically reacting carbon monoxide with methyl nitrite to produce dimethyl carbonate; a second step of absorbing dimethyl carbonate contained in a gas fraction withdrawn from the first step by dimethyl oxalate; a third step of regenerating methyl nitrite by contacting nitrogen monoxide contained in a gas fraction withdrawn from the second step with a molecular oxygen-containing gas and methyl alcohol; a fourth step of collecting dimethyl carbonate by distilling a liquid fraction withdrawn from the second step; and a fifth step of recovering methyl nitrite from a purge gas consisting of a portion of a regenerated gas fraction withdrawn from the third step by absorbing methyl nitrite in the purge gas by methyl alcohol to provide a methyl nitrite-containing liquid fraction and a nitrogen monoxide-containing gas fraction and bringing the gas fraction into contact with a molecular oxygen and methyl alcohol, to convert nitrogen monoxide in the gas fraction to methyl nitrite and to absorb this methyl nitrite by methyl alcohol, whereby methyl nitrite and nitrogen monoxide in the purge gas is recovered and reused with a high efficiency at a high level of safety.
摘要翻译：通过使一氧化碳与亚硝酸甲酯催化反应的第一步骤来制备碳酸二甲酯的方法来制备碳酸二甲酯; 从草酸二甲酯中吸收从第一步骤中排出的气体馏分中所含的碳酸二甲酯的第二步骤; 通过使从第二步骤抽出的气体馏分中含有的一氧化氮与含分子氧的气体和甲醇接触来再生亚硝酸甲酯的第三步骤; 通过蒸馏从第二步骤中抽出的液体馏分收集碳酸二甲酯的第四步骤; 以及第五步骤，从由第三步骤抽出的一部分再生气体馏分组成的吹扫气体中回收亚硝酸甲酯，通过用甲醇吸收吹扫气体中的亚硝酸甲酯，得到含有亚硝酸甲酯的液体馏分和一氧化氮将气体馏分与分子氧和甲醇接触，将气体部分中的一氧化氮转化成亚硝酸甲酯，并用甲醇吸收该亚硝酸甲酯，由此吹扫气中的亚硝酸甲酯和一氧化氮在高安全性下以高效率回收和再利用。

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