CAS: 3278-22-6; Bis(Vinylsulfonyl)Methane

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-6995287-B2
优先权日:2003-11-13
标 题 :Synthesis of vinylsulfones
发明人：WRIGHT CHARLES W; SEIFERT JAMES J; GODLESKI STEPHEN A; VANDEWALLE MARSHALL L; SPARA PAUL P
权利人:EASTMAN KODAK CO
摘要:Disclosed is a process comprising reacting a primary alcohol sulfone with a reducing agent and a halogenating agent in the presence of an amide compound present in an amount of less than 1 part amide per part of primary alcohol sulfone to form a vinylsulfone.

专利号:US-2005148798-A1
优先权日:2003-11-13
标题 :Synthesis of vinylsulfones