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公开(公告)号：US07227042B2
公开(公告)日：2007-06-05
申请号：US10818689
申请日：2004-04-06
CPC分类号： C07C49/327 , C07C45/65
摘要： The present invention provides a method of preparing 1-acetyl-1-chlorocyclopropane from 1,3 dichloro-2-pentanone by reaction with base in the presence of a phase transfer catalyst. The reaction may be run in the presence or absence of an organic solvent and in a continuous or batch process.
摘要翻译： 本发明提供了在相转移催化剂存在下，通过与碱反应，由1,3-二氯-2-戊酮制备1-乙酰基-1-氯环丙烷的方法。 反应可以在存在或不存在有机溶剂的情况下进行，并且在连续或间歇方法中进行。
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2.发明授权Process for the purification of substituted 4-amino-1,2,4-triazine-5-ones 失效取代的4-氨基-1,2,4-三嗪-5-酮的纯化方法
公开(公告)号：US5440038A
公开(公告)日：1995-08-08
申请号：US163466
申请日：1993-12-07
IPC分类号： C07D253/075
CPC分类号： C07D253/075
摘要： Substituted 4-amino-1,2,4-triazine-5-ones are purified to remove unwanted N-isomers by maintaining the crude product at a temperature of from about 55.degree. C. to about 70.degree. C. in the presence of a hydroxide, preferably an alkali metal hydroxide for at least 0.5 hour.
摘要翻译： 通过将粗产物保持在约55℃至约70℃的温度下，将纯化的取代的4-氨基-1,2,4-三嗪-5-酮除去不需要的N-异构体 氢氧化物，优选碱金属氢氧化物至少0.5小时。
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公开(公告)号：US06680408B2
公开(公告)日：2004-01-20
申请号：US10175639
申请日：2002-06-20
申请人： David M. Mayes , Vijay C. Desai , Eric Rivadeneira
发明人： David M. Mayes , Vijay C. Desai , Eric Rivadeneira
IPC分类号： C07C27708
CPC分类号： C07C277/08 , C07C279/36
摘要： Processes for preparing &agr;-substituted benzylnitroguanidines include the steps of providing a reaction mixture comprising water, alcohol, an S-alkyl nitroisothiourea, and an &agr;-substituted benzylamine; heating the reaction mixture; steam distilling the alcohol from the reaction mixture; and isolating an &agr;-substituted benzylnitroguanidine from the remaining water layer.
摘要翻译： 制备α-取代的苄基硝基胍的方法包括提供包含水，醇，S-烷基硝基异硫脲和α-取代的苄胺的反应混合物的步骤; 加热反应混合物; 将蒸汽从反应混合物中蒸馏出来; 并从剩余的水层中分离出α-取代的苄基硝基胍。
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公开(公告)号：US6100526A
公开(公告)日：2000-08-08
申请号：US19667
申请日：1998-02-06
申请人： David M. Mayes
发明人： David M. Mayes
CPC分类号： G01N21/3563 , A01D41/1277 , G01N21/359 , G01N21/474 , G01N21/85 , G01N2021/8592
摘要： Percentage concentrations of constituents of a sample of cereal grain or other agricultural product in a flowing stream are determined while harvesting or processing using a short wave near infrared analyzer. The analyzer irradiates the sample, picks up diffuse reflectance of individual wavelengths from the sample and spatially separates the diffuse reflectance into a response at individual wavelengths. The result is to simultaneously detect the intensities of the individual wavelengths in parallel from the same portion of the product being analyzed. Percentage constituents of the composite substance may then be compared with known percentage constituents to determine the constituents. The analyzer is optically stabilized and is therefore suitable for attaching to the agricultural combine to perform real time measurements in the field.
摘要翻译： 在使用短波近红外分析仪进行收获或处理的同时确定流动物流中谷物或其他农产品样品的成分浓度百分比。 分析仪照射样品，从样品中拾取各个波长的漫反射，并将漫反射空间分离成各个波长的响应。 其结果是同时从被分析产品的相同部分同时检测各个波长的强度。 然后可以将复合材料的百分比成分与已知的百分比成分进行比较以确定组分。 分析仪是光学稳定的，因此适合于连接到农业组合以在现场进行实时测量。
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公开(公告)号：US06836325B2
公开(公告)日：2004-12-28
申请号：US09932210
申请日：2001-08-17
IPC分类号： G01J342
CPC分类号： G01N21/276 , G01J3/02 , G01J3/0205 , G01J3/0218 , G01J3/0232 , G01J3/0256 , G01J3/0262 , G01J3/0272 , G01J3/28 , G01J3/42 , G01J3/46 , G01J3/502 , G01J3/524 , G01J2003/2866 , G01N21/3563 , G01N21/3577 , G01N21/359 , G01N21/85
摘要： The present invention relates to spectral analysis systems and methods for determining physical and chemical properties of a sample by measuring the optical characteristics of light emitted from the sample. In one embodiment, a probe head for use with a spectrometer includes an optical blocking element for forcing the optical path between the light source and an optical pick-up optically connected to the spectrometer into the sample. The probe head also includes a reference shutter for selectively blocking light emitted from the sample from reaching the optical pick-up to facilitate calibration of the spectrometer.
摘要翻译： 本发明涉及通过测量从样品发射的光的光学特性来确定样品的物理和化学性质的光谱分析系统和方法。 在一个实施例中，与光谱仪一起使用的探针头包括用于迫使光源和光学连接到光谱仪的光学拾取器之间的光路进入样品的光学阻挡元件。 探头还包括用于选择性地阻挡从样品发射的光到达光学拾波器以便于校准光谱仪的参考快门。
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公开(公告)号：US5948930A
公开(公告)日：1999-09-07
申请号：US927850
申请日：1997-09-11
申请人： David M. Mayes , Daniel M. Wasleski , Gerd Grah , Hermann Seifert
发明人： David M. Mayes , Daniel M. Wasleski , Gerd Grah , Hermann Seifert
CPC分类号： C07F9/20
摘要： The invention relates to process for the preparation of an O-alkyl, O-alkyl phosphorochloridothioate by 1) reacting A) a thiophosphoryl halide with B) an alcohol, in the presence of C) a tertiary amine acid acceptor and D) a solvent, and 2) reacting the resultant product with a second alcohol, different from the alcohol used in step 1). In the preferred embodiment, the intermediate product is not isolated before reaction with the second alcohol.
摘要翻译： 本发明涉及通过以下步骤制备O-烷基，O-烷基氯代硫代磷酸酯的方法：1）在C）叔胺酸受体和D）溶剂的存在下，使A）硫代磷酰卤与B）醇反应， 和2）使所得产物与不同于步骤1）中使用的醇的第二醇反应。 在优选的实施方案中，中间产物在与第二醇反应之前不分离。
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7.发明授权
公开(公告)号：US5861526A
公开(公告)日：1999-01-19
申请号：US869325
申请日：1997-06-05
申请人： David M. Mayes
发明人： David M. Mayes
IPC分类号： C07C337/02 , C07C333/00
CPC分类号： C07C337/02
摘要： Disclosed herein is an improved process for preparing methyl dithiocarbazinate by reacting carbon disulfide and hydrazine in an effective ratio to form hydrazinium dithiocarbazinate, followed by methylating the hydrazinium dithiocarbazinate with methyl bromide. The improvement resides in conducting the reaction of the carbon disulfide and hydrazine in the presence of a specified amount of a non-alcoholic solvent to reduce dithiocarbazinate buildup.
摘要翻译： 本文公开了一种通过使二硫化碳和肼以有效比例使二硫代肼基甲酸肼反应制备二硫代肼基甲酸甲酯，然后用甲基溴甲基化二硫代肼基甲酸肼的改进方法。 改进在于在特定量的非醇溶剂的存在下进行二硫化碳和肼的反应以减少二硫代肼基甲酸盐的积累。
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