40394-89-6

Upstream product

• 122-01-0 4-chloro-benzoyl chloride 
• 13892-47-2 ethyl 2-(4-chlorobenzoyl)-3-oxobutanoate 
• 105-39-5 chloroacetic acid ethyl ester 
• 2881-63-2 ethyl (4-chlorobenzoyl)acetate 

Relevant academic research and scientific papers

PIGMENT ADDITIVE, PIGMENT COMPOSITION USING THE SAME, COLORING COMPOSITION, AND COLOR FILTER

PROBLEM TO BE SOLVED: To provide: a pigment additive exhibiting extremely excellent characteristics for obtaining fine pigment; and a pigment composition which realizes a color filter made using the pigment composition or a coloring composition using the

Process for preparing ketones

Ketones are prepared by reacting an aromatic or heterocyclic aldehyde in the presence of a cyanide ion with an unsaturated compound having the formula (I): STR1 wherein R1, R2 and R3 are the same or different and are selected from the group of hydrogen, optionally substituted aliphatic, cycloaliphatic, araliphatic, aromatic, heterocyclic and carboxylic acid ester and R4 is nitrile (CN), --CO--R5 or --CO--OR5 wherein R5 is selected from the group of optionally substituted aliphatic, cycloaliphatic, araliphatic, aromatic and heterocyclic and R1 and R2 and/or R1 and R3 and/or R2 and R5 or R3 and R5 together with the carbon atoms to which they are attached as substituents may also form a carbocyclic or heterocyclic ring. Ketones prepared according to the process of the invention have the formula: STR2 wherein R1 ' and R3 ' are identical or different and are selected from the group of hydrogen, lower alkyl having up to 3 C-atoms and optionally substituted phenyl; and R6 ' is optionally substituted phenyl or a pyridyl.