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1. 发明申请

WO2008138733A1 OXIME ESTER PHOTOINITIATORS 审中-公开
标题翻译： OXIME ESTER照相机
公开(公告)号：WO2008138733A1
公开(公告)日：2008-11-20
申请号：PCT/EP2008/055127
申请日：2008-04-28
申请人： CIBA HOLDING INC. , MATSUMOTO, Akira , TANABE, Junichi , KURA, Hisatoshi , OHWA, Masaki
发明人： MATSUMOTO, Akira , TANABE, Junichi , KURA, Hisatoshi , OHWA, Masaki
IPC分类号： C07D401/12 , C07D417/06 , C08F2/50 , G03F7/004
CPC分类号： C07D401/12 , B33Y70/00 , C07D417/06 , C08F2/50 , G03F7/031 , Y10T428/31855
摘要： Compounds of the formula (I), wherein A 1 is formula (II); A 2 is formula (III); A 3 is formula (IV); A 4 is formula (V); w, x, y and z independently of each other are an integer from 0-4, provided that the sum of x+y+z is an integer from 2-4, corresponding to the valency of Q; M 1 , M 2 , M 3 and M 4 for example are a direct bond, CO or O; Y for example is a direct bond or S; Q is a (x+y)-valent linking group; R 1 is for example hydrogen, C 1 -C 20 alkyl or phenyl or naphthyl; R 2 and R" 2 for example are is hydrogen or C 1 -C 20 alkyl; R 3 , R 4 , R' 3 , R' 4 , R" 3 and R" 4 for example are hydrogen, halogen, phenyl, or C 1 -C 20 alkyl; and R 24 is for example a direct bond; exhibit an unexpectedly good performance in photopolymerization reactions.
摘要翻译：式（I）的化合物，其中A 1为式（II）; A 2是式（III）; A 3是式（IV）; A 4是式（V）; w，x，y和z彼此独立地是0-4的整数，条件是x + y + z的和是2-4的整数，对应于Q的化合价; M 1，M 2，M 3和M 4，例如是直接键，CO或O; Y例如是直接债券或S; Q是（x + y）价的连接基团; R 1是例如氢，C 1 -C 20烷基或苯基或萘基; R 2和R“2例如是氢或C 1 -C 20烷基; R 1 R 3，R 4，R 3，R 3，R 3，R 3，R 3， R“4例如是氢，卤素，苯基或C 1 -C 20烷基;和R 24 例如是直接键合;在光聚合反应中表现出意想不到的良好性能。

2. 发明申请

WO2008138732A1 OXIME ESTER PHOTOINITIATORS 审中-公开
标题翻译： OXIME ESTER照相机
公开(公告)号：WO2008138732A1
公开(公告)日：2008-11-20
申请号：PCT/EP2008/055126
申请日：2008-04-28
申请人： CIBA HOLDING INC. , MATSUMOTO, Akira , TANABE, Junichi , KURA, Hisatoshi , OHWA, Masaki
发明人： MATSUMOTO, Akira , TANABE, Junichi , KURA, Hisatoshi , OHWA, Masaki
IPC分类号： C07D409/06 , C07D409/14
CPC分类号： C07D409/06 , B33Y70/00 , C07D209/86 , C07D335/16 , C07D405/12 , C07D409/14 , C07D417/12
摘要： Compounds of the formula (I) and (II) M 1 , M 2 and M 3 independently of one another are no bond, a direct bond, CO, O, S, SO, SO 2 or NR 14 ; provided that at least one of M 1 , M 2 or M 3 is a direct bond, CO, O, S, SO, SO 2 or NR 14 ; M 4 is a direct bond, CR" 3 R" 4 , CS, O, S, SO, or SO 2 ; Y is S or NR 18 ; R 1 for example is hydrogen, C 3 -C 8 cycloalkyl, phenyl or naphthyl, both of which are optionally substituted; R 2 for example is C 1 -C 20 alkyl; R" 2 has one of the meanings given for R 2 ; R 3 and R 4 are for example hydrogen, halogen, C 1 -C 20 alkyl; R' 3 , R' 4 , R" 3 and R" 4 indepedently of one another have one of the meanings given for R 3 and R 4 ; and R 5 is for example hydrogen, halogen, C 1 -C 20 alkyl; provided that in the compounds of the formula (I) at least two oxime ester groups are present and provided that at least one specified substituent R 2 or R" 2 is present; exhibit an unexpectedly good performance in photopolymerization reactions.
摘要翻译：式（I）和（II）M 1，M 2和M 3 - 彼此独立的化合物不是键，直接键，CO，O，S，SO，SO 2或NR 14; 条件是M 1，M 2或M 3 3中的至少一个是直接键，CO，O，S，SO，SO， SUB> 2或NR 14; M 4是直接键合，CR“3 R”4，CS，O，S，SO或SO 2， / SUB>; Y是S或NR 18; R 1例如是氢，C 3 -C 8环烷基，苯基或萘基，它们都是任选取代的; R 2例如是C 1 -C 20烷基; R“2具有对R 2 2给出的含义之一; R 3和R 4是例如氢，卤素，C 1 -C 20烷基; R'3，R'4，R“，SUB > 3个和R“4个彼此独立地具有对R 3和R 4给出的含义之一; R 5是例如氢，卤素，C 1 -C 20烷基;条件是在式（I）的化合物中至少有两个存在肟酯基团，并且条件是存在至少一个特定的取代基R 2或R“2个<！ - SIPO < 在光聚合反应中表现出出人意料的良好性能。

3. 发明申请

WO2008138724A1 OXIME ESTER PHOTOINITIATORS 审中-公开
标题翻译： OXIME ESTER照相机
公开(公告)号：WO2008138724A1
公开(公告)日：2008-11-20
申请号：PCT/EP2008/054968
申请日：2008-04-24
申请人： CIBA HOLDING INC. , MATSUMOTO, Akira , TANABE, Junichi , KURA, Hisatoshi , OHWA, Masaki
发明人： MATSUMOTO, Akira , TANABE, Junichi , KURA, Hisatoshi , OHWA, Masaki
IPC分类号： C07D209/80 , C07D209/86 , C07D409/06 , G03F7/004 , C07D209/88
CPC分类号： G03F7/027 , C07D209/80 , C07D209/86 , C07D209/88 , C07D403/10 , C07D409/06 , C07D409/14 , G02B5/20 , G03F7/2002 , G03F7/2037 , G03F7/2039 , G03F7/30
摘要： Compounds of formula (I), (II), and (III), wherein R 1 , R 2 , R' 2 and R'" 2 for example are C 1 -C 20 alkyl, provided that at least one of R 1 , R 2 , R' 2 and R'" 2 carries a specified substituent; R 3 , R 4 , and R 5 for example independently of one another are hydrogen or a defined substituent provided that at least one of R 3 , R 4 or R 5 is other than hydrogen or C 1 -C 20 alkyl; R 6 , R 7 , R 8 , R' 7 , RV, R' 8 , R" 6 , R" 7 , R'" 6 and R'" 7 for example independently of one another have one of the meanings as given for R 3 , R 4 , and R 5 ; and R 9 for example is C 1 -C 20 alkyl; exhibit an unexpectedly good performance in photopolymerization reactions.
摘要翻译：式（I），（II）和（III）的化合物，其中R 1，R 2，R'2和R' “例如是C 1 -C 20烷基，条件是R 1，R 2，R 2中的至少一个 R 2'和R“”2“携带指定的取代基; R 3，R 4和R 5，例如彼此独立地是氢或定义的取代基，条件是R 1， R 3，R 4或R 5不同于氢或C 1 -C 20 >烷基; R 6，R 7，R 8，R'7，RV，R'8， / SUB，R“6，R”7，R“”6和R“”7 彼此独立地具有R 3，R 4和R 5所给出的含义之一; R 9和R 9例如是C 1 -C 20烷基; 在光聚合反应中表现出出人意料的良好性能。

4. 发明申请

WO2007062963A1 OXIME ESTER PHOTOINITIATORS 审中-公开
标题翻译： OXIME ESTER照相机
公开(公告)号：WO2007062963A1
公开(公告)日：2007-06-07
申请号：PCT/EP2006/068202
申请日：2006-11-08
申请人： CIBA SPECIALTY CHEMICALS HOLDING INC. , MATSUMOTO, Akira , TANABE, Junichi , KURA, Hisatoshi , OHWA, Masaki
发明人： MATSUMOTO, Akira , TANABE, Junichi , KURA, Hisatoshi , OHWA, Masaki
IPC分类号： C07D209/86 , C07D209/88 , C07D403/10 , C07D407/10 , G03F7/004
CPC分类号： C07D209/86 , C07D209/88 , C07D403/10 , C07D409/06 , C07D409/10 , G03F7/031
摘要： Compounds of the formula (I), (II), and wherein R 1 , R 2 , R' 2 and R'" 2 for example are C 1 -C 20 alkyl; R 3 , R 4 , and R 5 for example independently of one another are hydrogen or a defined substituent provided that at least one of R 3 , R 4 or R 5 is other than hydrogen or C 1 -C 20 alkyl; R 6 , R 7 , R 8 , R' 6 , R' 7 , R' 8 , R'' 6 , R" 7 , R'"6 and R'"7 for example independently of one another have one of the meanings as given for R 3 , R 4 , and R 5 ; and R 9 for example is C 1 -C 20 alkyl; exhibit an unexpectedly good performance in photopolymerization reactions.
摘要翻译：式（I），（II）和其中R 1，R 2，R'2和R“”的化合物 > 2 例如是C 1 -C 20烷基; R 3，R 4，和R 5，例如彼此独立地是氢或定义的取代基，条件是R 3，R 4或R 4中的至少一个， R 5不是氢或C 1 -C 20烷基; R 6，R 7， R 8，R 8，R 6，R“7，R 8，R”7， R 6，R“7，R”6和R“7例如彼此独立地具有R 3所给出的含义之一

5. 发明申请

WO2007071497A1 OXIME ESTER PHOTOINITIATORS 审中-公开
标题翻译： OXIME ESTER照相机
公开(公告)号：WO2007071497A1
公开(公告)日：2007-06-28
申请号：PCT/EP2006/068254
申请日：2006-11-09
申请人： CIBA SPECIALTY CHEMICALS HOLDING INC. , MATSUMOTO, Akira , TANABE, Junichi , KURA, Hisatoshi , OHWA, Masaki
发明人： MATSUMOTO, Akira , TANABE, Junichi , KURA, Hisatoshi , OHWA, Masaki
IPC分类号： C08F2/50 , C07C251/66 , G03F7/031
CPC分类号： G03F7/031 , B33Y70/00 , C07D209/86 , C07D409/06 , C08F2/50 , G03F7/0007 , G03F7/001
摘要： Compounds of the Formula (I) and (II) wherein M 1 , M 2 and M 3 independently of one another are no bond, a direct bond, CO, O, S, SO, SO 2 or NR 14 ; provided that at least one of M 1 , M 2 or M 3 is a direct bond, CO, O, S, SO, SO 2 or NR 14 ; M 4 is a direct bond, CR" 3 R" 4 , CS, O, S, SO, or SO 2 ; Y is S or NR 18 ; R 1 for example is hydrogen, C 3 -C 8 cycloalkyl, phenyl or naphthyl, both of which are optionally substituted; R 2 for example is C 1 -C 20 alkyl; R" 2 has one of the meanings given for R 2 ; R 3 and R 4 are for example hydrogen, halogen, C 1 -C 20 alkyl; R' 3 , R' 4 , R" 3 and R" 4 indepedently of one another have one of the meanings given for R 3 and R 4 ; and R 5 is for example hydrogen, halogen, C 1 -C 20 alkyl; provided that in the compounds of the Formula (I) at least two oxime ester groups are present; exhibit an unexpectedly good performance in photopolymerization reactions.
摘要翻译：式（I）和（II）的化合物（其中M 1，M 2和M 3）彼此独立地不具有键，直接键合，CO，O，S，SO，SO 2或NR 14; 条件是M 1，M 2或M 3 3中的至少一个是直接键，CO，O，S，SO，SO， SUB> 2 或NR 14; M 4是直接键合，CR“3”R“4，CS，O，S，SO或SO 2， / SUB>; Y是S或NR 18; R 1例如是氢，C 3 -C 8环烷基，苯基或萘基，它们都是任选取代的; R 2是例如C 1 -C 20烷基; R“2具有对R 2 2给出的含义之一; R 3和R 4是例如氢，卤素，C 1 -C 20烷基; R'3，R'4，R“，SUB > 3个和R“4个独立地具有对R 3和R 4给出的含义之一; R 式（I）的化合物中至少有两个是氢，卤素，C 1 -C 20烷基，存在肟酯基团;在光聚合反应中表现出意想不到的良好性能。

6. 发明申请

WO2006018405A1 OXIME ESTER PHOTOINITIATORS 审中-公开
标题翻译： OXIME ESTER照相机
公开(公告)号：WO2006018405A1
公开(公告)日：2006-02-23
申请号：PCT/EP2005/053894
申请日：2005-08-08
申请人： CIBA SPECIALTY CHEMICALS HOLDING INC. , TANABE, Junichi , KUNIMOTO, Kazuhiko , KURA, Hisatoshi , OKA, Hidetaka , OHWA, Masaki
发明人： TANABE, Junichi , KUNIMOTO, Kazuhiko , KURA, Hisatoshi , OKA, Hidetaka , OHWA, Masaki
IPC分类号： C07D209/86
CPC分类号： G03F7/031 , B33Y70/00 , C07D209/86 , C07D413/10
摘要： Compounds of the formula (I), wherein R 1 , R 2 and R 10 independently of one another are C 1 -C 20 alkyl, phenyl, C 1 -C 12 alkylphenyl or phenyl-C 1 -C 6 alkyl; R 3 and R 4 independently of one another are hydrogen, C 1 -C 20 alkyl, NR 6 R 7 or SR 8 , provided that at least one of R 3 or R 4 is NR 6 R 7 or SR 8 ; R 5 is hydrogen or C 1 -C 20 alkyl; R 6 and R 7 independently of one another are C 1 -C 20 alkyl, or R 6 and R 7 together with the N-atom to which they are attached form a 5 or 6 membered ring, which optionally is interrupted by O, S or NR 9 and which optionally additionally is substituted by one or more C 1 -C 4 alkyl; R 8 is phenyl, biphenylyl, naphthyl, anthryl or phenanthryl, all of which optionally are substituted by one or more C 1 -C 4 alkyl; and R 9 is hydrogen, C 1 -C 20 alkyl, C 2 -C 4 hydroxyalkyl or phenyl; exhibit an unexpectedly good performance in photopolymerization reactions.
摘要翻译：式（I）的化合物，其中R <

7. 发明申请

WO2004050653A2 OXIME ESTER PHOTOINITIATORS WITH HETEROAROMATIC GROUPS 审中-公开
标题翻译：具有异质组的OXIME ESTER光敏元件
公开(公告)号：WO2004050653A2
公开(公告)日：2004-06-17
申请号：PCT/EP2003/050880
申请日：2003-11-24
申请人： CIBA SPECIALTY CHEMICALS HOLDING INC. , TANABE, Junichi , KURA, Hisatoshi , OKA, Hidetaka , OHWA, Masaki
发明人： TANABE, Junichi , KURA, Hisatoshi , OKA, Hidetaka , OHWA, Masaki
IPC分类号： C07D409/00
CPC分类号： C07D207/333 , B33Y70/00 , C07D207/335 , C07D209/12 , C07D209/14 , C07D209/42 , C07D333/22 , C07D333/38 , C07D333/58 , C07D401/06 , C07D403/06 , C07D405/06 , C07D409/06 , C07D409/14 , C08F2/50 , G03F7/031
摘要： Compounds of the formulae (I), (II), (III) and (IV), wherein Ch 1 is e.g. the formula (V) or (VI); Ch 2 is the formula (VII) or (VIII); Het 1 is for example furyl, thienyl, pyrrolyl, pyridyl, benzothienyl, quinolyl or bithienyl; each of which is optionally substituted; Het 2 and Het 2 ' e.g. are furylene, thienylene, pyrrolylene, benzothienylene, quinolylene, furylenecarbonyl, thienylenecarbonyl, benzothienylenecarbonyl or bithienylenecarbonyl; each of which is optionally substituted; A 1 , and Ar 1 ’ i.a. are phenyl, naphthyl, benzoyl or naphthoyl, each of which is optionally substituted; Ar 2 is for example phenylene, optionally substituted; M i.a. is C 1 -C 20 alkylene; R 1 is for example C 1 -C 12 alkyl or phenyl; R 2 and R 2 ' for example are hydrogen or C 1 -C 20 alkyl; exhibit an unexpectedly good performance in photopolymerization reactions.
摘要翻译：式（I），（II），（III）和（IV）的化合物，其中Ch1是例如。式（Ⅴ）或（Ⅵ）; Ch2是式（VII）或（VIII）; Het1例如是呋喃基，噻吩基，吡咯基，吡啶基，苯并噻吩基，喹啉基或二噻吩基; 它们各自任选被取代; Het2和Het2' 呋喃基，噻吩乙烯基，吡咯基，苯并噻吩基，喹啉基，呋喃基羰基，噻吩羰基，苯并噻吩羰基或二噻吩羰基; 它们各自任选被取代; A1和Ar1'i.a. 是苯基，萘基，苯甲酰基或萘甲酰基，其各自任选被取代; Ar 2是例如亚苯基，任选被取代; 我是是C 1 -C 20亚烷基; R1是例如C1-C12烷基或苯基; R2和R2'例如是氢或C1-C20烷基; 在光聚合反应中表现出出人意料的良好性能。

8. 发明申请

WO2002100903A1 OXIME ESTER PHOTOINITIATORS HAVING A COMBINED STRUCTURE 审中-公开
标题翻译：具有组合结构的OXIME ESTER光敏元件
公开(公告)号：WO2002100903A1
公开(公告)日：2002-12-19
申请号：PCT/EP2002/006107
申请日：2002-06-04
申请人： CIBA SPECIALTY CHEMICALS HOLDING INC. , KUNIMOTO, Kazuhiko , TANABE, Junichi , KURA, Hisatoshi , OKA, Hidetaka , OHWA, Masaki
发明人： KUNIMOTO, Kazuhiko , TANABE, Junichi , KURA, Hisatoshi , OKA, Hidetaka , OHWA, Masaki
IPC分类号： C08F2/50
CPC分类号： C08F2/50 , B33Y70/00 , C07C251/66 , G03F7/031
摘要： Compounds of the formulae I, II, and III wherein R 1 is for example hydrogen, C 3 -C 8 cycloalkyl, C 1 -C 12 alkyl, phenyl unsubstituted or substituted; R 2 and R 2 ' for example are hydrogen, C 1 -C 20 alkyl, C 3 -C 8 cycloalkyl or phenyl, unsubstituted or substituted, or are (I) (I) or (I); Ar 1 is for example phenyl, optionally substituted by e.g. (CO)R 7 , (I)(D), (I)(E) and/or(I)(F); Ar 2 is for example phenylene, optionally substituted e.g. by (CO)R 7 , (D), (E)or (F); Ar 3 is for example phenyl; M 1 ,M 2 and M 3 are, for example, C 1 -C 20 alkylene; M 4 is for example direct bond, -O-, -S-, -Y-(C 1 -C 10 alkylene)-Y'-, optionally substituted;Y and Y' are for example a direct bond or O; R 7 is for example hydrogen, C 1 -C 20 alkyl or phenyl, optionally substituted; R 8 , R 9 , R 8 'and R 9 ' are for example hydrogen or C 1 -C 12 alkyl, exhibit an unexpectedly good performance in photopolymerization reactions.
摘要翻译：式I，II和III的化合物，其中R 1是例如氢，C 3 -C 8环烷基，C 1 -C 12烷基，未取代或取代的苯基; R 2和R 2'例如是氢，C 1 -C 20烷基，C 3 -C 8环烷基或未取代或取代的苯基，或者是（I）（I）或（I）; Ar 1是例如苯基，任选地被例如苯基取代。（CO）R7，（I）（D），（I）（E）和/或（I）（F）; Ar 2是例如亚苯基，任选被取代的例如亚苯基。（CO）R7，（D），（E）或（F）; Ar 3例如是苯基; M1，M2和M3是例如C1-C20亚烷基; M4例如直接键合，-O - ， - S-，-Y-（C 1 -C 10亚烷基）-Y'-，任意取代; Y和Y'例如是直接键或O; R 7为例如氢，C 1 -C 20烷基或苯基，任选取代; R 8，R 9，R 8'和R 9'例如为氢或C 1 -C 12烷基，在光聚合反应中表现出出乎意料的良好性能。

9. 发明申请

WO2003010602A1 PHOTOSENSITIVE RESIN COMPOSITION 审中-公开
标题翻译：感光树脂组合物
公开(公告)号：WO2003010602A1
公开(公告)日：2003-02-06
申请号：PCT/EP2002/007989
申请日：2002-07-18
申请人： CIBA SPECIALTY CHEMICALS HOLDING INC. , KURA, Hisatoshi , OKA, Hidetaka , OHWA, Masaki
发明人： KURA, Hisatoshi , OKA, Hidetaka , OHWA, Masaki
IPC分类号： G03F7/031
CPC分类号： C08F2/50 , B33Y70/00 , C07D295/112 , C07D295/135 , G03F7/0007 , G03F7/031
摘要： A photosensitive composition comprising, (A) an oligomer or polymer containing at least one carboxylic acid group in the molecule and having a molecular weight of 200'ooo or less; (B) at least one photoinitiator compound of formula (I), R 1 , is lenear or banched C 1 -C 12 alkyl; R 2 is linear or branched C 1 -C 4 alkyl; R 3 and R 4 independently of one another are linear or branched C 1 -C 8 alkyl; and (C) a monomeric, oligoneric or polymeric compound having at least one olefinic double bond, is especially suitable for preparting photoresists, in particular color filters.
摘要翻译：一种光敏组合物，其包含：（A）在分子中含有至少一个羧酸基并且分子量为200'o以下的低聚物或聚合物; （B）至少一种式I的光引发剂化合物R 1> = 1或C 1 -C 12烷基; R 2是直链或支链C 1 -C 4烷基; R 3和R 4彼此独立地是直链或支链C 1 -C 8烷基; 和（C）具有至少一个烯属双键的单体，低聚或高分子化合物，特别适用于制备光致抗蚀剂，特别是滤色器。

10. 发明申请

WO2010108835A1 PHOTORESIST COMPOSITION 审中-公开
标题翻译：光电组合物
公开(公告)号：WO2010108835A1
公开(公告)日：2010-09-30
申请号：PCT/EP2010/053468
申请日：2010-03-17
申请人： BASF SE , KURA, Hisatoshi , SAMESHIMA, Kaori , KUNIMOTO, Kazuhiko , NESVADBA, Peter , OHWA, Masaki
发明人： KURA, Hisatoshi , SAMESHIMA, Kaori , KUNIMOTO, Kazuhiko , NESVADBA, Peter , OHWA, Masaki
IPC分类号： C08F265/02 , C08K5/32 , C08K5/3435 , C07D295/24 , G03F7/039
CPC分类号： G03F7/028 , C07D211/94 , C07D491/113 , C08F110/02 , C08F110/06 , C08F265/02 , C08K5/3435 , G03F7/0007 , G03F7/031 , G03F7/40 , C08L33/06
摘要： The present invention relates to a radically polymerizable composition comprising a hydroxylamine ester used to manufacture color filters. The invention further relates to novel hydroxylamine esters. The invention further relates to the use of hydroxylamine esters in all liquid crystal display components requiring post-baking. The present invention relates to a radically polymerizable composition comprising: (a) at least one alkaline developable resin; (b) at least one acrylate monomer; (c) at least a photoinitiator; (d) at least one hydroxylamine ester compound of formula (I) wherein R a represents an acyl radical; one of R b and R c represents hydrogen and the other one represents a substituent; or R b and R c both represent hydrogen or identical or different substituents; or R b and R c together represent oxygen; or R b and R c together form a ring; R 1 - R 4 each represent C 1 -C 6 alkyl; and R 5 and R 6 each represent independently of one another hydrogen, C 1 -C 6 alkyl or C 6 -C 10 aryl; or R 5 and R 6 together represent oxygen.
摘要翻译：本发明涉及一种可自由基聚合的组合物，其包含用于制造滤色器的羟胺酯。本发明还涉及新的羟胺酯。本发明还涉及在需要后烘烤的所有液晶显示组件中使用羟胺酯。本发明涉及可自由基聚合的组合物，其包含：（a）至少一种碱性显影树脂; （b）至少一种丙烯酸酯单体; （c）至少一种光引发剂; （d）至少一种式（I）的羟胺酯化合物，其中R a表示酰基; Rb和Rc之一表示氢，另一个表示取代基; 或Rb和Rc都表示氢或相同或不同的取代基; 或Rb和Rc一起代表氧; 或Rb和Rc一起形成环; R 1 -R 4各自表示C 1 -C 6烷基; R 5和R 6各自独立地表示氢，C 1 -C 6烷基或C 6 -C 10芳基; 或R5和R6一起表示氧。

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