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1. 发明授权

US07595408B2 Methods for the preparation of (3R,3aS,6aR) hexahydro-furo[2,3-b]furan-3-ol 有权
标题翻译：制备（3R，3aS，6aR）六氢 - 呋喃并[2,3-b]呋喃-3-醇的方法
公开(公告)号：US07595408B2
公开(公告)日：2009-09-29
申请号：US10599497
申请日：2005-03-31
申请人： Peter Jan Leonard Mario Quaedflieg , Bart Rudolf Romanie Kesteleyn , Robert Jan Vijn , Constantinus Simon Maria Liebregts , Jacob Hermanus Matheus Hero Kooistra , Franciscus Alphons Marie Lommen
发明人： Peter Jan Leonard Mario Quaedflieg , Bart Rudolf Romanie Kesteleyn , Robert Jan Vijn , Constantinus Simon Maria Liebregts , Jacob Hermanus Matheus Hero Kooistra , Franciscus Alphons Marie Lommen
IPC分类号： C07D307/93 , C07D493/00
CPC分类号： C07D493/04 , C07D307/20
摘要： The present invention relates to methods for the preparation of diastereomerically pure (3R,3aS,6aR) hexahydro-furo[2,3-b]furan-3-ol as well as a novel intermediate, (3aR,4S,6aS) 4-methoxy-tetrahydro-furo[3,4-b]furan-2-one for use in said methods. More in particular the invention relates to a stereoselective method for the preparation of diastereomerically pure (3R,3aS,6aR) hexahydro-furo[2,3-b]furan-3-ol, as well as methods for the crystallization of (3aR,4S,6aS) 4-methoxy-tetrahydro-furo[3,4-b]furan-2-one and for the epimerization of (3aR,4R,6aS) 4-methoxy-tetrahydro-furo[3,4-b]-furan-2-one to (3aR,4S,6aS) 4-methoxy-tetrahydro-furo[3,4-b]furan-2-one.
摘要翻译：本发明涉及制备非对映体纯的（3R，3aS，6aR）六氢 - 呋喃并[2,3-b]呋喃-3-醇以及新的中间体（3aR，4S，6aS）-4- 甲氧基 - 四氢 - 呋喃并[3,4-b]呋喃-2-酮。更具体地，本发明涉及用于制备非对映体纯（3R，3aS，6aR）六氢 - 呋喃并[2,3-b]呋喃-3-醇的立体选择性方法，以及（3aR， 4S，6aS）4-甲氧基 - 四氢 - 呋喃并[3,4-b]呋喃-2-酮，并用于（3aR，4R，6aS）4-甲氧基 - 四氢 - 呋喃并[3,4-b] 呋喃-2-酮与（3aR，4S，6aS）-4-甲氧基 - 四氢 - 呋喃并[3,4-b]呋喃-2-酮。

2. 发明申请

US20050011412A1 Storable water-microsphere suspensions for use in well cements and methods 审中-公开
标题翻译：用于水泥和方法的可储存的水 - 微球悬浮液
公开(公告)号：US20050011412A1
公开(公告)日：2005-01-20
申请号：US10920846
申请日：2004-08-18
申请人： Jan Vijn , Bach Dao
发明人： Jan Vijn , Bach Dao
IPC分类号： C04B40/00 , C09K8/46 , C04B16/08 , C04B20/00 , C04B38/00
CPC分类号： C04B20/0084 , C04B40/0039 , C09K8/46 , Y02W30/92 , C04B14/24 , C04B24/163 , C04B28/02 , C04B40/06 , C04B18/082 , C04B24/38 , C04B20/0036 , C04B2103/40
摘要： Storable water-microsphere suspensions for use in well cements and methods of cementing well bores are provided. The storable water-microsphere suspensions comprise water, microspheres and an effective amount of a suspending agent selected from the group consisting of microfine or colloidal materials and gel forming polymers.
摘要翻译：提供了用于水泥的可储存的水 - 微球悬浮液和固井井眼的方法。可储存的水 - 微球悬浮液包含水，微球和有效量的选自微细或胶体材料和凝胶形成聚合物的悬浮剂。

3. 发明授权

US07361775B2 Process for the preparation of (S)-glyceraldehyde acetonide 失效
标题翻译：制备（S） - 甘油醛缩酮的方法
公开(公告)号：US07361775B2
公开(公告)日：2008-04-22
申请号：US10574693
申请日：2004-10-07
申请人： Peter Jan Leonard Mario Quaedflieg , Franciscus Alphons Marie Lommen , Robert Jan Vijn , Danniël Adrianus Franciscus Jacobus Boxtel Van
发明人： Peter Jan Leonard Mario Quaedflieg , Franciscus Alphons Marie Lommen , Robert Jan Vijn , Danniël Adrianus Franciscus Jacobus Boxtel Van
IPC分类号： C07D317/26
CPC分类号： C07D317/26
摘要： The invention relates to a process for the preparation of (S)-glyceraldehyde acetonide in aqueous solution from 3,4-O-isopropylidene-L-threonic acid or a salt thereof in aqueous solution, and hypochlorite in aqueous solution wherein the aqueous hypochlorite solution has a pH>7.5 and wherein during addition of at least 0.1 molar equivalents of hypochlorite based on the amount of 3,4-O-isopropylidene-L-threonic acid, an acid solution is not simultaneously added. The invention also relates to a process according to the invention, wherein 3,4-O-isopropylidene-L-threonic acid or a salt thereof is prepared from 5,6-O-isopropylidene-L-ascorbic acid or a salt thereof in the presence of H2O2 and a base in a manner known per se, wherein excess H2O2 is optionally removed by catalase. The invention also relates to a process according to the invention, wherein 5,6-O-isopropylidene-L-ascorbic acid or a salt thereof is prepared by reacting L-ascorbic acid or a salt thereof with an acetonide forming agent, preferably in the presence of an acid catalyst.
摘要翻译：本发明涉及一种在水溶液中由3,4-O-异亚丙基-L-苏糖酸或其盐在水溶液中制备（S） - 甘油醛缩酮的方法，以及次氯酸盐水溶液中的次氯酸盐水溶液 pH> 7.5，其中基于3,4-O-异亚丙基-L-苏糖酸的量添加至少0.1摩尔当量的次氯酸盐，不能同时加入酸溶液。本发明还涉及根据本发明的方法，其中3,4-O-异亚丙基-L-苏糖或其盐由5,6-O-异亚丙基-L-抗坏血酸或其盐在以本身已知的方式存在H 2 O 2 O 2和碱，其中过量的H 2 O 2 O 2和/ 任选地被过氧化氢酶除去。本发明还涉及根据本发明的方法，其中5,6-O-异亚丙基-L-抗坏血酸或其盐通过L-抗坏血酸或其盐与丙酮化物形成剂反应制备，优选在存在酸催化剂。

4. 发明申请

US20050038127A1 Storable water-silica suspensions and methods 有权
标题翻译：可储存的水 - 二氧化硅悬浮液和方法
公开(公告)号：US20050038127A1
公开(公告)日：2005-02-17
申请号：US10953226
申请日：2004-09-29
申请人： Jan Vijn , Bach Dao
发明人： Jan Vijn , Bach Dao
IPC分类号： C04B14/06 , C04B40/00 , C09K8/46 , E21B33/13 , B01F3/04
CPC分类号： E21B33/13 , C04B14/062 , C04B40/0039 , C09K8/46 , C09K8/467 , C04B14/06 , C04B14/10 , C04B28/02 , C04B40/06 , C04B24/163 , C04B24/26 , C04B24/38 , C04B2103/40 , C04B20/0084
摘要： Storable water-silica suspensions and methods of cementing well bores are provided. The storable water-silica suspensions are basically comprised of water, silica and an effective amount of a suspending agent selected from the group consisting of colloidal materials, clays and gel forming polymers.
摘要翻译：提供了可储存的水 - 二氧化硅悬浮液和固井井的方法。可储存的水 - 二氧化硅悬浮液基本上由水，二氧化硅和有效量的选自胶体材料，粘土和凝胶形成聚合物的悬浮剂组成。

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