Author Topic: Error in proc. on rh's page  (Read 2762 times)

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Bandil

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Error in proc. on rh's page
« on: February 05, 2003, 12:03:00 PM »

https://www.thevespiary.org/rhodium/Rhodium/chemistry/red-al.nitrostyrenes.html




On the page in the experimental section there is stated:

Typically, a solution of the substituted benzaldehyde (1 mmol) and NH4OAc (1.25 mmol) in nitroethane was refluxed for the specified time. The mixture was cooled immediately in liquid N2 or Acetone-solid CO2, diluted with CH2Cl2, and filtered while cold. Solvent was removed in vacuo, and the remaining beta-nitrostyrene was recrystallized by known procedures6.


AFAIK the given procedure would give the corresponding nitropropene and not the nitrostyrene...

pHarmacist

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Yeah Bandil
« Reply #1 on: February 05, 2003, 04:13:00 PM »
Nitromethane would yield nitrostyrene...


Rhodium

  • Guest
vague, not wrong
« Reply #2 on: February 05, 2003, 09:50:00 PM »
It is no error, phenyl-2-nitropropene is beta-methyl-beta-nitrostyrene so calling it a beta-nitrostyrene is just being vague, not wrong. You could say "nitroalkene" too, being even more unspecific as to exactly what compound is being discussed.

Just take a look in Pihkal, where Shulgin refers to substituted phenyl-2-nitropropenes as "nitrostyrenes" all the time.

Bandil

  • Guest
*hmmm* I guess you are right rhodium...
« Reply #3 on: February 06, 2003, 12:33:00 PM »
*hmmm*

I guess you are right rhodium...