Facile synthesis of a series of liquid crystalline 2-(4′-alkoxyphenyl)-5-cyanopyridines
    2.
    发明授权
    Facile synthesis of a series of liquid crystalline 2-(4′-alkoxyphenyl)-5-cyanopyridines 有权
    一系列液晶2-(4'-烷氧基苯基)-5-氰基吡啶的合成

    公开(公告)号:US07872143B2

    公开(公告)日:2011-01-18

    申请号:US11760985

    申请日:2007-06-11

    IPC分类号: C07D213/85

    CPC分类号: C07D213/84

    摘要: The invention relates to a facile synthesis of a series of 2-(4′-alkoxyphenyl)-5-cyanopyridine liquid crystal compounds which are represented by the following formula (I): wherein CnH2n+1 is a linear alkyl group having 2-12 carbon atoms. The synthesis of the liquid crystalline 2-(4′-alkoxyphenyl)-5-cyanopyridine is completed in a two-step reaction. First, a Grignard reagent (such as 4-alkoxyphenylmagnesium bromide) is added to a 3-cyanopyridinium salt (such as N-phenyloxycarbonyl-3-cyanopyridinium chloride) to get a 1,2-dihydropyridine. Then, the 1,2-dihydropyridine is oxidized with o-chloronil to obtain the 2-(4′-alkoxyphenyl)-5-cyanopyridine.

    摘要翻译: 本发明涉及一种由下式(I)表示的一系列2-(4'-烷氧基苯基)-5-氰基吡啶液晶化合物的简便合成:其中C n H 2n + 1是具有2-12个碳原子的直链烷基 碳原子。 液晶2-(4'-烷氧基苯基)-5-氰基吡啶的合成在两步反应中完成。 首先,向3-氰基吡啶鎓盐(如N-苯氧基羰基-3-氰基吡啶鎓氯化物)中加入格氏试剂(如4-烷氧基苯基溴化镁),得到1,2-二氢吡啶。 然后,用邻氯苯酚氧化1,2-二氢吡啶,得到2-(4'-烷氧基苯基)-5-氰基吡啶。

    Photoresist removal method and patterning process utilizing the same
    6.
    发明授权
    Photoresist removal method and patterning process utilizing the same 有权
    光刻胶去除方法和利用其的图案化工艺

    公开(公告)号:US08785115B2

    公开(公告)日:2014-07-22

    申请号:US13370226

    申请日:2012-02-09

    IPC分类号: G03F7/42

    摘要: A photoresist removal method is described. A substrate having thereon a positive photoresist layer to be removed is provided. The positive photoresist layer is UV-exposed without using a photomask. A development liquid is used to remove the UV-exposed positive photoresist layer. The substrate as provided may further have thereon a sacrificial masking layer under the positive photoresist layer. The sacrificial masking layer is removed after the UV-exposed positive photoresist layer is removed.

    摘要翻译: 描述光致抗蚀剂去除方法。 提供其上具有要去除的正性光致抗蚀剂层的基板。 正光致抗蚀剂层在不使用光掩模的情况下被UV曝光。 使用显影液来除去UV曝光的正性光致抗蚀剂层。 所提供的基底还可以在正光致抗蚀剂层下方具有牺牲掩模层。 在除去UV曝光的正性光致抗蚀剂层之后去除牺牲掩模层。

    PHOTORESIST REMOVAL METHOD AND PATTERNING PROCESS UTILIZING THE SAME
    7.
    发明申请
    PHOTORESIST REMOVAL METHOD AND PATTERNING PROCESS UTILIZING THE SAME 有权
    使用其的光刻胶去除方法和图案处理方法

    公开(公告)号:US20130210237A1

    公开(公告)日:2013-08-15

    申请号:US13370226

    申请日:2012-02-09

    IPC分类号: H01L21/306

    摘要: A photoresist removal method is described. A substrate having thereon a positive photoresist layer to be removed is provided. The positive photoresist layer is UV-exposed without using a photomask. A development liquid is used to remove the UV-exposed positive photoresist layer. The substrate as provided may further have thereon a sacrificial masking layer under the positive photoresist layer. The sacrificial masking layer is removed after the UV-exposed positive photoresist layer is removed.

    摘要翻译: 描述光致抗蚀剂去除方法。 提供其上具有要去除的正性光致抗蚀剂层的基板。 正光致抗蚀剂层在不使用光掩模的情况下被UV曝光。 使用显影液来除去UV曝光的正性光致抗蚀剂层。 所提供的基底还可以在正光致抗蚀剂层下方具有牺牲掩模层。 在除去UV曝光的正性光致抗蚀剂层之后去除牺牲掩模层。

    FACILE SYNTHESIS OF A SERIES OF LIQUID CRYSTALLINE 2-(4'-ALKOXYPHENYL)-5-CYANOPYRIDINES
    9.
    发明申请
    FACILE SYNTHESIS OF A SERIES OF LIQUID CRYSTALLINE 2-(4'-ALKOXYPHENYL)-5-CYANOPYRIDINES 有权
    一系列液晶2-(4'-烷氧基苯基)-5-氰基吡啶的合成

    公开(公告)号:US20080306276A1

    公开(公告)日:2008-12-11

    申请号:US11760985

    申请日:2007-06-11

    IPC分类号: C07D213/02

    CPC分类号: C07D213/84

    摘要: The invention relates to a facile synthesis of a series of 2-(4′-alkoxyphenyl)-5-cyanopyridine liquid crystal compounds which are represented by the following formula (I): wherein CnH2n+1 is a linear alkyl group having 2-12 carbon atoms. The synthesis of the liquid crystalline 2-(4′-alkoxyphenyl)-5-cyanopyridine is completed in a two-step reaction. First, a Grignard reagent (such as 4-alkoxyphenylmagnesium bromide) is added to a 3-cyanopyridinium salt (such as N-phenyloxycarbonyl-3-cyanopyridinium chloride) to get a 1,2-dihydropyridine. Then, the 1,2-dihydropyridine is oxidized with o-chloronil to obtain the 2-(4′-alkoxyphenyl)-5-cyanopyridine.

    摘要翻译: 本发明涉及一种由下式(I)表示的一系列2-(4'-烷氧基苯基)-5-氰基吡啶液晶化合物的简便合成:其中C n H 2n + 1是具有2-12个碳原子的直链烷基 碳原子。 液晶2-(4'-烷氧基苯基)-5-氰基吡啶的合成在两步反应中完成。 首先,向3-氰基吡啶鎓盐(如N-苯氧基羰基-3-氰基吡啶鎓氯化物)中加入格氏试剂(如4-烷氧基苯基溴化镁),得到1,2-二氢吡啶。 然后,用邻氯苯酚氧化1,2-二氢吡啶,得到2-(4'-烷氧基苯基)-5-氰基吡啶。