Electric Literature of 932-22-9, Chemistry is the science of change. But why do chemical reactions take place? Why do chemicals react with each other? The answer is in thermodynamics and kinetics.In a document type is Patent, and a compound is mentioned, 932-22-9, 4,5-Dichloro-3(2H)-pyridazinone, introducing its new discovery.
3(2H)Pyridazinone, process for its preparation and anti-allergic agent containing it
A 3(2H)pyridazinone of the formula: STR1 wherein R1 is hydrogen, methyl, C3 -C6 alkenyl, C5 or C6 cycloalkyl, benzyl, phenyl, –(CH2)m CO2 R3 (wherein R3 is hydrogen or C1 -C5 alkyl, and m is an integer of from 1 to 4), –(CH2)n A (wherein A is –OH or –N(R4)2 wherein R4 is C1 -C3 alkyl, and n is an integer of from 2 to 6) or –CH2 CF3 ; R2 is chlorine or bromine; each of Y1 and Y2 which may be the same or different, is hydrogen, C1 -C5 alkyl, C2 -C8 alkenyl, halogen, –OR5 (wherein R5 is hydrogen, C1 -C8 alkyl or STR2 wherein q is an integer of from 1 to 4), –CO2 R6 (wherein R6 is hydrogen or C1 -C5 alkyl), –N(R7)2 (wherein R7 is C1 -C4 alkyl) or –SR8 (wherein R8 is C1 -C4 alkyl); and Y3 is C1 -C5 alkyl, C2 -C8 alkenyl, halogen, –OR5 (wherein R5 is as defined above), –CO2 R6 (wherein R6 is as defined above), –N(R7)2 (wherein R7 is as defined above) or –SR8 (wherein R8 is as defined above), or a pharmaceutically acceptable salt thereof.
Balanced chemical reaction does not necessarily reveal either the individual elementary reactions by which a reaction occurs or its rate law.Electric Literature of 932-22-9. In my other articles, you can also check out more blogs about 932-22-9
Reference£º
Pyridazine – Wikipedia,
Pyridazine | C4H4N2259 – PubChem