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Electrochemical Reduction of Nitrostyrenes

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Rhodium:
Ueber die Reduktion von ?-Nitrostyrolen mit Lithiumaluminiumhydrid
M. Erne & F. Ramirez
Helv. Chim. Acta 33, 912-916 (1950) (https://www.thevespiary.org/rhodium/Rhodium/pdf/nitrostyrene.lah.erne-ramirez.pdf)

Summary
The following phenethylamines were prepared by reduction of the corresponding ?-nitrostyrenes: 3,4,5-Trimethoxyphenethylamine (Mescaline, 77%), 2,3,4-Trimethoxyphenethylamine (Isomescaline, 80%), DL-Amphetamine (87%), 3,4-Methylenedioxyphenethylamine (MDPEA, 86%), as well as 5-Bromo-3,4-Methylenedioxyphenethylamine (dehalogenation could be controlled by adjusting the reaction conditions). The required nitrostyrene was made by bromination of protocatechualdehyde, methylenation with methylene sulfate and NaOH-catalyzed condensation with nitromethane. Myristicinaldehyde (5-Methoxy-3,4-methylenedioxybenzaldehyde) was also prepared in 17% yield by methylenation of 5-Methoxy-3,4-dihydroxybenzaldehyde with methylene sulfate.

Rhodium:
Notiz über eine neue Synthese von Mezcalin, N-Methyl- und N,N-Dimethylmezcalin
K. Banholzer, T.W. Campbell, H. Schmid
Helv. Chim. Acta. 35, 1577-1581 (1952) (https://www.thevespiary.org/rhodium/Rhodium/pdf/mescaline.diazoketone.pdf)

P2PA:
Hi,
its a long time ago but I think its still an interesting thread.

Anyone who is more experienced with this reduction method?

I´ve some questions:

1. What materials can be successfully used as cell divider instant of the flower pot?

2. Pre coated (PbO2) lead electrodes are the way to go?

3. Is it necessary, that all of the substrate is solved at once or just before being reduced?

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