Chromatographic method for the analysis of both in process and finished sevoflurane
    1.
    发明授权
    Chromatographic method for the analysis of both in process and finished sevoflurane 有权
    用于分析工艺和成品七氟醚的色谱法

    公开(公告)号:US07230143B2

    公开(公告)日:2007-06-12

    申请号:US11029197

    申请日:2005-01-04

    IPC分类号: C07C41/34

    摘要: A method in which organic matter found in a crude sevoflurane may be separated, identified, and quantified using a CARBOWAX™ (polyethylene glycol) capillary gas chromatographic column or an alkyl polysiloxane capillary gas chromatographic column. Also provided is a process control method for the production of sevoflurane, wherein the content of a particular component in one of the following steps is determined, and in that, assuming this as a variable, the treatment condition of the step is adjusted: 1) a step of extracting, or cooling to form two layers, and/or distilling a mixture of crude sevoflurane and hydrogen fluoride (HF) in order to isolate the majority of the sevoflurane and 2) an optional step of purifying the crude sevoflurane and 3) a step of distilling crude sevoflurane. Also provided is a method for determining the impurity level of a purified sevoflurane that is acceptable for use in human/animal anesthesia.

    摘要翻译: 可以使用CARBOWAX TM(聚乙二醇)毛细管气相色谱柱或烷基聚硅氧烷毛细管气相色谱柱分离,鉴定和定量在七氟烷粗品中发现的有机物质的方法。 还提供了用于生产七氟醚的过程控制方法,其中确定以下步骤之一中的特定组分的含量,并且其中将其作为变量,将步骤的处理条件调整为:1) 提取或冷却形成两层和/或蒸馏粗七氟烷和氟化氢(HF)的混合物以分离大部分七氟醚的步骤,和2)任选的纯化七氟烷的步骤,和3) 蒸馏粗品七氟烷的步骤。 还提供了一种用于确定在人/动物麻醉中可以使用的纯化七氟醚的杂质水平的方法。

    Chromatographic method for the analysis of both in process and finished sevoflurane
    2.
    发明申请
    Chromatographic method for the analysis of both in process and finished sevoflurane 有权
    用于分析工艺和成品七氟醚的色谱法

    公开(公告)号:US20050234268A1

    公开(公告)日:2005-10-20

    申请号:US11029197

    申请日:2005-01-04

    摘要: A method in which organic matter found in a crude sevoflurane may be separated, identified, and quantified using a CARBOWAX™ (polyethylene glycol) capillary gas chromatographic column or an alkyl polysiloxane capillary gas chromatographic column. Also provided is a process control method for the production of sevoflurane, wherein the content of a particular component in one of the following steps is determined, and in that, assuming this as a variable, the treatment condition of the step is adjusted: 1) a step of extracting, or cooling to form two layers, and/or distilling a mixture of crude sevoflurane and hydrogen fluoride (HF) in order to isolate the majority of the sevoflurane and 2) an optional step of purifying the crude sevoflurane and 3) a step of distilling crude sevoflurane. Also provided is a method for determining the impurity level of a purified sevoflurane that is acceptable for use in human/animal anesthesia.

    摘要翻译: 可以使用CARBOWAX TM(聚乙二醇)毛细管气相色谱柱或烷基聚硅氧烷毛细管气相色谱柱分离,鉴定和定量在七氟烷粗品中发现的有机物质的方法。 还提供了用于生产七氟醚的过程控制方法,其中确定以下步骤之一中的特定组分的含量,并且其中将其作为变量,将步骤的处理条件调整为:1) 提取或冷却形成两层和/或蒸馏粗七氟烷和氟化氢(HF)的混合物以分离大部分七氟醚的步骤,和2)任选的纯化七氟烷的步骤,和3) 蒸馏粗品七氟烷的步骤。 还提供了一种用于确定在人/动物麻醉中可以使用的纯化七氟醚的杂质水平的方法。

    Synthesis of fluorinated ethers
    3.
    发明授权
    Synthesis of fluorinated ethers 有权
    氟化醚的合成

    公开(公告)号:US09150480B2

    公开(公告)日:2015-10-06

    申请号:US11813785

    申请日:2006-01-06

    IPC分类号: C07C41/22 C07C43/12

    CPC分类号: C07C43/123 C07C41/22

    摘要: A process for preparing fluorinated ethers, such as desflurane, comprises reacting the corresponding chlorinated ether, such as isoflurane, with anhydrous hydrogen fluoride in the vapor phase in the presence of chromia catalyst. It is emphasized that this abstract is provided to comply with the rules requiring an abstract which will allow a searcher or other reader quickly to ascertain the subject matter of the technical disclosure. It is submitted with the understanding that it will not be used to interpret or limit the scope or meaning of the appended issued claims.

    摘要翻译: 制备氟代醚的方法,如地氟烷,包括在铬酸催化剂存在下,使气相中的相应的氯化醚如异氟烷与无水氟化氢反应。 要强调的是,该摘要被提供以符合要求抽象的规则,这将允许搜索者或其他读者快速地确定技术公开的主题。 提交它的理解是,它不会用于解释或限制所附权利要求的范围或含义。

    Purification of Fluoromethyl 1,1,1,3,3,3-Hexafluoroisopropyl Ether (Sevoflurane)
    6.
    发明申请
    Purification of Fluoromethyl 1,1,1,3,3,3-Hexafluoroisopropyl Ether (Sevoflurane) 失效
    氟甲基1,1,1,3,3,3-六氟异丙醚(七氟烷)的纯化

    公开(公告)号:US20080214875A1

    公开(公告)日:2008-09-04

    申请号:US11997435

    申请日:2006-08-02

    IPC分类号: C07C41/34

    CPC分类号: C07C41/42 C07C43/123

    摘要: Crude sevoflurane product comprising unacceptably high levels of HFIP can be purified by combining the crude sevoflurane product with sufficient water to produce a multiphase mixture, fractionally distilling the multiphase mixture, and removing substantially pure sevoflurane from the distilling multiphase mixture. It is emphasized that this abstract is provided to comply with the rules requiring an abstract which will allow a searcher or other reader quickly to ascertain the subject matter of the technical disclosure. It is submitted with the understanding that it will not be used to interpret or limit the scope or meaning of the appended issued claims.

    摘要翻译: 包含不可接受的高水平HFIP的粗七氟烷产物可以通过将粗七氟烷产物与足够的水结合以产生多相混合物,分馏蒸馏多相混合物,以及从蒸馏多相混合物中除去基本上纯的七氟醚,来纯化。 要强调的是,该摘要被提供以符合要求抽象的规则,这将允许搜索者或其他读者快速地确定技术公开的主题。 提交它的理解是,它不会用于解释或限制所附权利要求的范围或含义。

    Purification of 1,1,1,3,3,3-Hexafluoroiopropanol
    7.
    发明申请
    Purification of 1,1,1,3,3,3-Hexafluoroiopropanol 失效
    1,1,1,3,3,3-六氟丙丙醇的纯化

    公开(公告)号:US20080058560A1

    公开(公告)日:2008-03-06

    申请号:US10599472

    申请日:2005-02-04

    IPC分类号: C07C29/132 C07C29/74

    摘要: 1,1,1,3,3,3-Hexafluoroisopropanol (HFIP) substantially free of 1,1,1-trifluoroacetone (TFA) can be separated from a mixture containing both compounds by A) catalytic reduction with hydrogen followed by fractional distillation; B) cooling to a temperature at which HFIP freezes and TFA remains liquid; C) forming a high boiling complex comprising HF and TFA followed by fractional distillation; or D) producing HF-free conditions to yield a HFIP/TFA azeotrope followed by fractional distillation. It is emphasized that this abstract is provided to comply with the rules requiring an abstract, which will allow a searcher or other reader to quickly ascertain the subject matter of the technical disclosure. It is submitted with the understanding that it will not be used to interpret or limit the scope or meaning of the claims. 37 CFR § 1.72(b).

    摘要翻译: 基本上不含1,1,1-三氟丙酮(TFA)的1,1,1,3,3,3-六氟异丙醇(HFIP)可以从含有这两种化合物的混合物中分离出来,A)用氢气催化还原,然后分馏; B)冷却至HFIP冻结的温度,TFA保持液态; C)形成包含HF和TFA的高沸点络合物,然后分馏; 或D)产生无HF条件以产生HFIP / TFA共沸物,随后进行分馏。 要强调的是,该摘要被提供以符合要求摘要的规则,这将允许搜索者或其他读者快速确定技术公开的主题。 提交它的理解是,它不会用于解释或限制权利要求的范围或含义。 37 CFR§1.72(b)。

    Purification of 1,1,1,3,3,3-hexafluoroisopropanol
    8.
    发明授权
    Purification of 1,1,1,3,3,3-hexafluoroisopropanol 失效
    1,1,1,3,3,3-六氟异丙醇的纯化

    公开(公告)号:US07659433B2

    公开(公告)日:2010-02-09

    申请号:US10599472

    申请日:2005-02-04

    摘要: 1,1,1,3,3,3-Hexafluoroisopropanol (HFIP) substantially free of 1,1,1-trifluoroacetone (TFA) can be separated from a mixture containing both compounds by A) catalytic reduction with hydrogen followed by fractional distillation; B) cooling to a temperature at which HFIP freezes and TFA remains liquid; C) forming a high boiling complex comprising HF and TFA followed by fractional distillation; or D) producing HF-free conditions to yield a HFIP/TFA azeotrope followed by fractional distillation. It is emphasized that this abstract is provided to comply with the rules requiring an abstract, which will allow a searcher or other reader to quickly ascertain the subject matter of the technical disclosure. It is submitted with the understanding that it will not be used to interpret or limit the scope or meaning of the claims. 37 CFR § 1.72(b).

    摘要翻译: 基本上不含1,1,1-三氟丙酮(TFA)的1,1,1,3,3,3-六氟异丙醇(HFIP)可以从含有这两种化合物的混合物中分离出来,A)用氢气催化还原,然后分馏; B)冷却至HFIP冻结的温度,TFA保持液态; C)形成包含HF和TFA的高沸点络合物,然后分馏; 或D)产生无HF条件以产生HFIP / TFA共沸物,随后进行分馏。 要强调的是,该摘要被提供以符合要求摘要的规则,这将允许搜索者或其他读者快速确定技术公开的主题。 提交它的理解是,它不会用于解释或限制权利要求的范围或含义。 37 CFR§1.72(b)。

    Separation/Purification of Desflurane from Hydrogen Fluoride
    9.
    发明申请
    Separation/Purification of Desflurane from Hydrogen Fluoride 有权
    从氟化氢中分离/纯化地氟烷

    公开(公告)号:US20080306309A1

    公开(公告)日:2008-12-11

    申请号:US11815673

    申请日:2006-02-09

    IPC分类号: C07C41/42 C09K3/00

    摘要: An azeotrope comprising desflurane (CF3CFHOCF2H) and hydrogen fluoride (HF). The azeotrope can be prepared by fractionally distilling a crude mixture of desflurane and HF. Purer desflurane can be readily and easily separated from the azeotrope. It is emphasized that this abstract is provided to comply with the rules requiring an abstract which will allow a searcher or other reader quickly to ascertain the subject matter of the technical disclosure. It is submitted with the understanding that it will not be used to interpret or limit the scope or meaning of the appended issued claims.

    摘要翻译: 包含地氟烷(CF 3 CFHOCF 2 H)和氟化氢(HF)的共沸物。 可以通过分馏蒸馏地氟烷和HF的粗混合物来制备共沸物。 Purer地氟烷可以容易地和容易地从共沸物中分离出来。 要强调的是,该摘要被提供以符合要求抽象的规则,这将允许搜索者或其他读者快速地确定技术公开的主题。 提交它的理解是,它不会用于解释或限制所附权利要求的范围或含义。

    Separation/purification of desflurane from hydrogen fluoride
    10.
    发明授权
    Separation/purification of desflurane from hydrogen fluoride 有权
    从氟化氢中分离/纯化地氟烷

    公开(公告)号:US08283500B2

    公开(公告)日:2012-10-09

    申请号:US11815673

    申请日:2006-02-09

    IPC分类号: C07C43/00

    摘要: An azeotrope comprising desflurane (CF3CFHOCF2H) and hydrogen fluoride (HF). The azeotrope can be prepared by fractionally distilling a crude mixture of desflurane and HF. Purer desflurane can be readily and easily separated from the azeotrope. It is emphasized that this abstract is provided to comply with the rules requiring an abstract which will allow a searcher or other reader quickly to ascertain the subject matter of the technical disclosure. It is submitted with the understanding that it will not be used to interpret or limit the scope or meaning of the appended issued claims.

    摘要翻译: 包含地氟烷(CF 3 CFHOCF 2 H)和氟化氢(HF)的共沸物。 可以通过分馏蒸馏地氟烷和HF的粗混合物来制备共沸物。 Purer地氟烷可以容易地和容易地从共沸物中分离出来。 要强调的是,该摘要被提供以符合要求抽象的规则,这将允许搜索者或其他读者快速地确定技术公开的主题。 提交它的理解是,它不会用于解释或限制所附权利要求的范围或含义。