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Grignard
(Stranger) 05-16-03 02:25 No 433506 |
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electrolytic reduction of nitrostyrene | Bookmark | |||||
Electrolytic reduction of phenyl-2-nitropropene I just follow the procedure listed in the Us patent and used latex as a membrane. The colour in the cathode compartment changed to wery deep purple.. Is this normal? Can i use 6M sulphuric acid in the anode compartment without any acetic acid or ethanol and must there be an equal volume in the cathode/anode?? The best material to use in the anode/cathode, i used Cu maybe Pb would work bether? I would be wery pleased if enyone have tryed this syntesis and would cher some experienses with me.. ![]() |
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Bandil (Hive Bee) 05-16-03 03:38 No 433514 |
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Could you provide us with a reference to the... | Bookmark | |||||
Could you provide us with a reference to the method you followed? I have never heard of latex being used as a membrane. How much current could you pass through the membrane and at which voltage? There are very few electrolytic bee's at the hive. Personally i would love to see some more experimentation being done on the field. But if you can provide the reference, it'll help a lot! Regards Bandil Cops are not there to help you, they're there to bust you. |
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Grignard (Stranger) 05-16-03 04:41 No 433525 |
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latex | Bookmark | |||||
I probably used to litle amperes, but i used a 24V 0,5 A power suply. The latex was from a glove and it vorks vell. I have no references but i read a reduction of ephendrine to meth on rhodium and they used a condom, which is latex. US pat.no 1,879,003 |
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Bandil (Hive Bee) 05-16-03 05:29 No 433530 |
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The purple/blue color could be the result of... | Bookmark | |||||
The purple/blue color could be the result of some hydrated copper ions which might have entered the solution. Did you see degradation of your cathode/anode plates? What current density did you see at the cathode? The patent suggest 1/5 amp*cm^(-2)... Also, how many fardays did you use per mole of subsrate? I really didn't think that latex was permeable for ions, but i might have been wrong. The writeup you are referring to are using lambgut condoms, which from natures side are permeable... As a side note: does anyone know what the price approximately is for a divided cell comparment? It's really just plastic with some sort of fitting for the membrane, so i couldn't be that expensive... Regards Bandil Cops are not there to help you, they're there to bust you. |
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Lilienthal (Moderator) 05-16-03 06:05 No 433534 |
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I don't think the current through a latex... | Bookmark | |||||
I don't think the current through a latex membrane is high enough. Did you check the current (in A)? |
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Osmium (Stoni's sexual toy) 05-16-03 06:14 No 433536 |
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Generally speaking, what you usually want in... | Bookmark | |||||
Generally speaking, what you usually want in such an electrolytic reaction is LOW voltage, and LOTS of Ampères. Excessive Volts only heat up your solution, it's the product of Ampères x Time (= numbers of electrons, measured in Faraday) that really counts. I'm not fat just horizontally disproportionate. http://www.whatreallyhappened.com |
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calcium (Newbee) 05-16-03 17:11 No 433629 |
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sheep intestine vs latex | Bookmark | |||||
Never tried electrolytic reactions myself, but the write-ups using condoms always use natural lamb condoms, not latex. Assuming all condoms to be latex could mislead someone into thinking that latex was a semi-permeable membrane and thereby suitable for use in a divided cell. |
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Organ_Morgan (Newbee) 05-17-03 12:10 No 433751 |
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Latex | Bookmark | |||||
A quack friend told me that latex surgical gloves absorb moisture from sweaty hands, making the latex more pliable and stick to the hands like a second skin (hence use in comdoms). Even wet latex can't be a very good conductor though. |
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Grignard (Stranger) 05-18-03 22:49 No 434093 |
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Thank to everybody, i could se some gas bubles | Bookmark | |||||
Thank to everybody, i could se some gas bubles at the anode and the Cu was degraded but the solution turn into deep red when i solvated the styrene? But Latex leads ions, i didn`t measured the amp. But i will try this again and post the results. A car battery charger should hold enough power i think... I also got another qestion: Could propylamine be used instead of butyl and cycloheksylamine in the condensation of benzaldehyde and nitroethane? ![]() |
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Bandil (Hive Bee) 05-19-03 00:18 No 434101 |
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Propylamine might work. | Bookmark | |||||
Propylamine might work. Methylamine gives excellent yeilds, so i dont see why propyl shouldn't Regards Bandil Cops are not there to help you, they're there to bust you. |
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Rhodium (Chief Bee) 05-20-03 16:38 No 434411 |
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One reason to use butylamine and homologs | Bookmark | |||||
Propylamine has a rather low boiling point, so it might evaporate if you aren't running the reaction at RT in a tightly stoppered flask. |
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Grignard 05-22-03 00:58 |
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Other reductions
(Rated as: UTFSE!) |
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Grignard (Stranger) 05-25-03 23:12 No 435553 |
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Propylamine | Bookmark | |||||
Propylamine works ok.. but the reaction is very eksoterm. And the time of the reaction is shorter.. Anyone that have done an Na-Hg reduction? Is it enough to mix the nitrostyrene with cons aceticacid and mix in the Na-Hg? How many % Na in the amalgam works best? |
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