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1. 再颁专利

USRE33779E Preparation process of 4,4-dihydroxybiphenyl 失效
公开(公告)号：USRE33779E
公开(公告)日：1991-12-24
申请号：US569059
申请日：1990-08-13
申请人： Yutaka Konai , Tadashi Nakamura , Takayuki Tanonaka , Kazuo Yoshida , Yoshihisa Machida
发明人： Yutaka Konai , Tadashi Nakamura , Takayuki Tanonaka , Kazuo Yoshida , Yoshihisa Machida
IPC分类号： C07C37/08 , C07B61/00 , C07C27/00 , C07C37/50 , C07C39/15 , C07C67/00
CPC分类号： C07C37/50
摘要： 4,4'-Dihydroxybiphenyl is prepared by decomposing 4,4'-di(2-hydroxy-2-propyl)biphenyl with hydrogen peroxide and an acid catalyst in acetonitrile as a solvent. Especially, this process minimizes the formation of by-products and permits easy purification of the intended product.

2. 发明授权

US06271426B1 Process for the production of 2,6-dichloro-3,5-di(secondary or tertiary alkyl)toluene 失效
标题翻译：制备2,6-二氯-3,5-二（仲或叔烷基）甲苯的方法
公开(公告)号：US06271426B1
公开(公告)日：2001-08-07
申请号：US08981537
申请日：1998-04-15
申请人： Toshio Hozumi , Takayuki Tanonaka , Hitoshi Takahashi , Hidenori Moe , Masaaki Hiruta , Tadahito Kasami
发明人： Toshio Hozumi , Takayuki Tanonaka , Hitoshi Takahashi , Hidenori Moe , Masaaki Hiruta , Tadahito Kasami
IPC分类号： C07C2200
CPC分类号： B01J31/0218 , B01J31/022 , C07C17/12 , C07C25/02
摘要： This invention relates to an improved process for producing 2,6-dichloro-3,5-di(secondary or tertiary alkyl)toluene represented by the following formula (I). The process comprises chlorinating 3,5-di(secondary and tertiary alkyl)toluene represented by the following formula (II) by reacting with a chlorinating agent in the presence of a Lewis acid together with an aromatic sulfur compound represented by the formula (III) as a promoter: wherein R1 and R2 are independently a secondary alkyl or tertiary alkyl group, Ar1 and Ar2 are independently an unsubstituted or substituted aromatic ring, and n is 1 or 2.
摘要翻译：本发明涉及一种生产由下式（I）表示的2,6-二氯-3,5-二（仲或叔烷基）甲苯的改进方法。该方法包括在路易斯酸存在下与氯化剂一起与由式（III）表示的芳族硫化合物一起氯化由下式（II）表示的3,5-二（仲和叔烷基）甲苯，作为助催化剂：其中R1和R2独立地为仲烷基或叔烷基，Ar1和Ar2独立地为未取代或取代的芳环，n为1或2。

3. 发明授权

US4814521A Process for producing 2,6-dihydroxynaphthalene and 2,6-diacetoxynaphthalene 失效
标题翻译：制备2,6-二羟基萘和2,6-二乙酰氧基萘的方法
公开(公告)号：US4814521A
公开(公告)日：1989-03-21
申请号：US89661
申请日：1987-08-26
申请人： Takayuki Tanonaka , Takashi Yamauchi , Hiroyuki Enari , Yutaka Konai
发明人： Takayuki Tanonaka , Takashi Yamauchi , Hiroyuki Enari , Yutaka Konai
IPC分类号： C07C37/08 , C07C37/60 , C07C39/14 , C07C37/01 , C07C41/00 , C07C43/20
CPC分类号： C07C37/08 , C07C37/50
摘要： Disclosed herein is a process for producing 2,6-dihydroxynaphthalene which comprises oxidizing 2,6-di(2-hydroxy-2-propyl)naphthalene in acetonitrile, 1,4-dioxane or a mixture thereof with hydrogen peroxide in the presence of an inorganic acid or a solid acid at a temperture in the range of room temperature to the boiling point of the solution of the 2,6-di(2-hydroxy-2-propyl)naphthalene in acetonitrile or 1,4-dioxane, the acetonitrile, 1,4-dioxane or a mixture thereof being used in an amount of 3 to 30 ml to one gram of the 2,6-di(2-hydroxy-2-propyl)naphthalene.
摘要翻译：本文公开了一种生产2,6-二羟基萘的方法，其包括在乙腈，1,4-二恶烷或其与过氧化氢的混合物中，在二氯甲烷存在下，将2,6-二（2-羟基-2-丙基）无机酸或固体酸在室温至2,6-二（2-羟基-2-丙基）萘在乙腈或1,4-二恶烷溶液中的温度范围内的温度下，乙腈，1,4-二恶烷或其混合物的用量为3至30ml至1克2,6-二（2-羟基-2-丙基）萘。

4. 发明授权

US5811555A Method for substitution of an amino group of a primary amine by a chlorine atom and a synthetic method by application thereof 失效
标题翻译：用氯原子取代伯胺氨基的方法及其应用的合成方法
公开(公告)号：US5811555A
公开(公告)日：1998-09-22
申请号：US749775
申请日：1996-11-20
申请人： Takashi Wakasugi , Tadashi Miyakawa , Takayuki Tanonaka
发明人： Takashi Wakasugi , Tadashi Miyakawa , Takayuki Tanonaka
IPC分类号： C07D277/32
CPC分类号： C07D277/32
摘要： This invention relates to methods for substitution of an amino group of a heterocyclic primary amine by a chlorine atom and synthesis of 2-chloro-5-methylthiazole and its derivatives by application thereof. Typically, a heterocyclic primary amine and sodium nitrite are caused to react in the presence of hydrochloric acid, followed by heating the formed diazonium base at 30.degree.-100.degree. C. in the presence of an equimolar or more of hydrochloric acid to substitute the amino group by the chlorine atom. Further, 2-amino-5-methylthiazole and sodium nitrite are caused to react in the presence of hydrochloric acid, followed by heating the formed diazonium base at 30.degree.-100.degree. C. in the presence of an equimolar or over of hydrochloric acid to give 2-chloro-5-methylthiazole. Then, the resultant 2-chloro-5-methylthiazole is caused to react with a chlorinating agent to give 2-chloro-5-chloro-methylthiazole.
摘要翻译：本发明涉及用氯原子取代杂环伯胺的氨基和通过其应用合成2-氯-5-甲基噻唑及其衍生物的方法。通常，使杂环伯胺和亚硝酸钠在盐酸存在下反应，然后在等摩尔或更多的盐酸存在下，在30-100℃下加热形成的重氮基，以取代氨基由氯原子组成。此外，使2-氨基-5-甲基噻唑和亚硝酸钠在盐酸存在下反应，然后在等摩尔或过量盐酸存在下，在30-100℃下加热形成的重氮基，得到2-氯-5-甲基噻唑。然后，使得到的2-氯-5-甲基噻唑与氯化剂反应，得到2-氯-5-氯 - 甲基噻唑。

5. 发明授权

US4804788A Preparation process of 4,4-dihydroxybiphenyl 失效
标题翻译： 4,4-二羟基联苯的制备方法
公开(公告)号：US4804788A
公开(公告)日：1989-02-14
申请号：US116733
申请日：1987-11-04
申请人： Yutaka Konai , Tadashi Nakamura , Takayuki Tanonaka , Kazuo Yoshida , Yoshihisa Machida
发明人： Yutaka Konai , Tadashi Nakamura , Takayuki Tanonaka , Kazuo Yoshida , Yoshihisa Machida
IPC分类号： C07C37/08 , C07B61/00 , C07C27/00 , C07C37/50 , C07C39/15 , C07C67/00 , C07C39/14
CPC分类号： C07C37/50
摘要： 4,4'-Dihydroxybiphenyl is prepared by decomposing 4,4'-di(2-hydroxy-2-propyl)biphenyl with hydrogen peroxide and an acid catalyst in acetonitrile as a solvent. Especially, this process minimizes the formation of byproducts and permits easy purification of the intended product.
摘要翻译：通过用过氧化氢和酸催化剂在乙腈中作为溶剂分解4,4'-二（2-羟基-2-丙基）联苯来制备4,4'-二羟基联苯。特别地，该方法使副产物的形成最小化并允许容易地纯化所需产物。

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