CAS: 25646-77-9; 2-((4-Amino-3-Methylphenyl)(Ethyl)Amino)Ethanol Sulfate

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CAS号541-42-4 亚硝酸异丙酯 | CAS号91-88-3 N-乙基-N-羟乙基间甲苯胺

专利信息

专利号:US-5919969-A
优先权日:1996-06-05
标 题 :Synthesis of yellow couplers
发明人：CRAWLEY MICHAEL W
权利人:EASTMAN KODAK CO
摘要:The invention provides a method of synthesis of a image-dye forming coupler of formula (I) wherein X is a substituent linked to the coupler by an atom of oxygen, sulfur or nitrogen R1 is an alkyl or aryl group, R2 is a hydrogen atom or an alkyl group; R3 to R7 are the same or different and selected from a hydrogen atom and substituent groups; which method comprises the reaction of a compound of formula (II) wherein R and R1 are the same or different and are as defined above for R1 and X is as defined above with a compound of formula (III) wherein R2 to R7 are as defined above, in the presence of an inert organic solvent.

专利号:US-6946562-B2
优先权日:2001-12-12
标 题:Synthesis of peptoid substituted azole compounds
发明人：DIEHL DONALD R; NIGER ROBERT J; SCHMITTHENNER HANS F; SONNEFELD WILLIAM J; DUNLAP RICHARD P
权利人:EASTMAN KODAK CO
摘要:Disclosed is a process for the preparation of a peptoid substituted azole compound comprising reacting an amino functionalized azole compound with a resin bound peptoid oligomer bearing a terminal halogen substituent followed by cleavage of the resultant product from the resin surface using a fluorinated organic acid in an inert solvent.

专利号:US-2003187188-A1
优先权日:2001-12-12
标 题:Synthesis of peptoid substituted azole compounds

专利号:US-5928851-A
优先权日:1996-06-20
标题:Photographic couplers which release useful groups anchiomerically and their synthesis
发明人：ALLWAY PHILIP ARTHUR
权利人:EASTMAN KODAK CO
摘要:The present invention describes an image dye-forming coupler of formula (I) wherein L is an oxymethylene or oxycarbonyl group; n is 0 or 1; COUP is a coupler moiety and R1 and R2 are the same or different and are groups selected such that (a) together with the nitrogen atom a good leaving group is formed; (b) at least one of them contains a PUG linked to an electrophilic center (E); and (c) neither R1 nor R2 is a hydrogen atom wherein the coupler is a DIAR coupler from which inhibitor is released from a coupling-off group after a timed delay which results from an additional reaction step. Such delay permits control over the time of release, rate of release and rate of diffusion of a photographically useful group (PUG) without altering the nature of the PUG itself. A method of preparing the coupler is also described wherein the two parts of the molecule can be built up separately and combined in a single reaction allowing ready access to a large variety of possible structures.

专利号:EP-1319975-A1
优先权日:2001-12-12
标 题 :Synthesis of peptoid substituted azole compounds

专利号:US-6190852-B1
优先权日:1999-12-28
标 题:Photographic element containing nitrogen heterocycle substituted cyan coupler and process
发明人：MURA ALBERT J; SCARINGE RAYMOND P; HARDER JOHN W
权利人:EASTMAN KODAK CO
摘要:Disclosed is a photographic element comprising a light-sensitive silver halide emulsion layer having associated therewith a cyan dye-forming coupler represented by Formula (I): n wherein: n each R 1 and R 3 is an independently selected substituent, m is 0 to 5, and p is 0 to 2; n X is hydrogen or a coupling-off group; n W and W 2 represent the atoms necessary to complete rings; and n R 2 is an alkyl or aryl group. n The element provides desirable hue properties and ease of synthesis.