公开(公告)号：US4151174A

公开(公告)日：1979-04-24

申请号：US809058

申请日：1977-06-22

申请人： Eva R. Karger ,  Paul T. MacGregor

发明人： Eva R. Karger ,  Paul T. MacGregor

IPC分类号： C09B11/04 ,  G03C8/48 ,  C07D209/04

CPC分类号： G03C8/48 ,  C09B11/04

摘要： This invention relates to derivatives of phthalaldehydic and naphthalaldehydic acid useful as intermediates in the preparation of pH-sensitive phthalide and naphthalide indicator dyes.A class of intermediates provided by the present invention comprises compounds of the formula: ##STR1## wherein A represents 4'-hydroxy-1'-naphthyl; B represents 4'-hydroxy-1'-naphthyl or indol-3-yl and C represents a 2-carboxy-1-phenyl radical or an 8-carboxy-1-naphthyl radical and preferably is 8-carboxy-1-naphthyl.

公开(公告)号：US4036863A

公开(公告)日：1977-07-19

申请号：US691889

申请日：1976-06-01

申请人： Eva R. Karger ,  Paul T. MacGregor

发明人： Eva R. Karger ,  Paul T. MacGregor

IPC分类号： C07C65/105 ,  C07C65/11 ,  C07C65/24 ,  C09B11/04 ,  G03C8/48 ,  C07C39/14 ,  C07C39/16

CPC分类号： C09B11/04 ,  C07C65/105 ,  C07C65/11 ,  C07C65/24 ,  G03C8/48

摘要： This invention relates to derivatives of phthalaldehydic and naphthalaldehydic acid useful as intermediates in the preparation of pH-sensitive phthalide and naphthalide indicator dyes.A class of intermediates provided by the present invention comprises compounds of the formula: ##STR1## wherein A represents 4'-hydroxy-1'-naphthyl; B represents 4'-hydroxy-1'-naphthyl or indol-3-yl and C represents a 2-carboxy-1-phenyl radical or an 8-carboxy-1-naphthyl radical and preferably is 8-carboxy-1-naphthyl.

摘要翻译： 本发明涉及邻苯二醛和萘甲酸的衍生物，其可用作制备pH敏感的苯酞和萘指示剂染料的中间体。

公开(公告)号：US4656286A

公开(公告)日：1987-04-07

申请号：US866782

申请日：1986-05-23

申请人： Paul T. MacGregor ,  Myron S. Simon

发明人： Paul T. MacGregor ,  Myron S. Simon

IPC分类号： C07D277/04 ,  G03C7/305 ,  G03C8/10 ,  C07C149/273

CPC分类号： C07D277/04 ,  G03C7/30547 ,  G03C8/10

摘要： There are disclosed certain aminoethanethiols, and salts thereof, and certain thiazolidines which are made therefrom. The compounds are useful as intermediates in the synthesis of photographic image dye-providing materials.

摘要翻译： 公开了由其制备的某些氨基乙硫醇及其盐，以及某些噻唑烷。 该化合物可用作合成摄影图像染料提供材料的中间体。

公开(公告)号：US3976662A

公开(公告)日：1976-08-24

申请号：US456870

申请日：1974-04-01

申请人： Eva R. Karger ,  Paul T. MacGregor

发明人： Eva R. Karger ,  Paul T. MacGregor

IPC分类号： C09B11/04 ,  G03C8/48 ,  C07D311/06

CPC分类号： C09B11/04 ,  G03C8/48

摘要： This invention relates to derivatives of phthalaldehydic and naphthalaldehydic acid useful as intermediates in the preparation of pH-sensitive phthalide and naphthalide indicator dyes. One class of intermediates provided by the present invention comprises compounds of the formula: ##SPC1##Wherein A represents 4'-hydroxy-1'-naphthyl and X represents the atoms necessary to complete a ring-closing moiety selected from a phthalide and a naphthalide and preferably is naphthalide.Another class of intermediates provided by the present invention comprises compounds of the formula: ##SPC2##Wherein A represents 4'-hydroxy-1'-naphthyl; B represents 4'-hydroxy-1'-naphthyl or indol-3-yl and C represents a 2-carboxy-1-phenyl radical or an 8-carboxy-1-naphthyl radical and preferably is 8-carboxy-1-naphthyl.

摘要翻译： 本发明涉及邻苯二醛和萘甲酸的衍生物，其可用作制备pH敏感的苯酞和萘指示剂染料的中间体。 本发明提供的一类中间体包括下式的化合物：

公开(公告)号：US4001277A

公开(公告)日：1977-01-04

申请号：US456869

申请日：1974-04-01

申请人： Eva R. Karger ,  Paul T. MacGregor

发明人： Eva R. Karger ,  Paul T. MacGregor

IPC分类号： C07D311/92 ,  G03C8/48 ,  C07D209/18

CPC分类号： G03C8/48 ,  C07D311/92

摘要： This invention relates to a class of indicator dyes useful as optical filter agents in photographic processes to protect a selectively exposed photosensitive material from further exposure during processing in the presence of incident light. Such dyes comprise 3,3-disubstituted phthalides and 3,3-disubstituted naphthalides wherein one of the 3,3-substituents is an indol-3-yl radical substituted with hydrogen on the heterocyclic N atom and the other of said 3,3 substituents is a p-hydroxycarbocyclic aryl radical selected from a 4'-hydroxy-1'-phenyl radical and a 4'-hydroxy-1'-naphthyl radical.