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substituted phenylhydrazine synthesis help needed!
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mk-1

Joined: 20 Feb 2005
Posts: 86
2841.38 Points
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substituted phenylhydrazine synthesis help needed!

 Thu May 19, 2005 9:31 pm		 Reply with quote
helo.
Im interested in the synthesis of 3- or 4-substituted phenylhydrazine,
mainly :
3-chlorophenylhydrazine


4-chlorophenylhydrazine


4-methoxyphenylhydrazine


help is appreciated!
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ApprenticeCook
DILLIGAF
Joined: 12 Feb 2005
Posts: 162
Location: Australia
8486.38 Points
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re: substituted phenylhydrazine synthesis help needed!

 Sat May 21, 2005 2:04 pm		 Reply with quote
Easily enough completed from the reaction of 3 or 4-chloroaniline with nitrous acid (NO2 in water) to form the 3 or 4-chlorobenzenediazonium then using the Fischer Phenylhydrazine Synthesis (http://themerckindex.cambridgesoft.com/TheMerckIndex/NameReactions/ONR136.htm) using sodium hydrogen sulphite and hydrochloric acid to make the 3 or 4-chlorophenylhydrazine.

Check out my thread on the synthesis of phenylhydrazine --> https://www.synthetikal.com/synthforum/viewtopic.php?p=1920

-AC
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