Author Topic: Short Questions Thread  (Read 10820 times)

basstabone

  • Pupae
  • **
  • Posts: 50
Re: Short Questions Thread
« Reply #220 on: September 26, 2009, 03:06:08 AM »
Haha got another questions. If I'm making caffeine pills.. Is a vice really enough pressure to keep the pill from falling apart?

Sedit

  • Global Moderator
  • Foundress Queen
  • *****
  • Posts: 2,099
Re: Short Questions Thread
« Reply #221 on: September 26, 2009, 03:29:18 AM »
Just as a head up basstabone the idea of making caffeine pills does not set well at all with me considering no-doze is over the counter. If indeed you are making fake whatever pills please stop for the sake of all underground chemist reputations. We have enough to worry about without fear mongering DEA talking about fake this and that floating around the street. Forgive me if I misjudged but I see no other need to make any form of caffeine pills.


Tighter seal with petroleum jelly is not needed. Try a jar and you will see. They where made to keep these things sealed for years on end without letting even bacteria in. The surface tension H2O forms is wayyy bigger then the size of bacteria. Even if it gets slightly damp its nothing at all to dry it again so no need to really worry about it at all since its cheep and easy to remake.
There once were some bees and you took all there stuff!
You pissed off the wasp now enough is enough!!!

Sedit

  • Global Moderator
  • Foundress Queen
  • *****
  • Posts: 2,099
Re: Short Questions Thread
« Reply #222 on: September 26, 2009, 04:25:55 AM »
If an alkene is brominated in the polar solvent of MeNO2 what would happen if the MeNO2 was attempted to be reduced while the bromoalkane is still insitu? If this dont make sence I could explain further if needed? Cmon yall collage boys got my smarts topped for the time being. What do ya'll think will happen if a mixture of bromosafrole and nitromethane was subjected to the dissolving metal reduction?

Other reducing agent suggestions are welcome.
There once were some bees and you took all there stuff!
You pissed off the wasp now enough is enough!!!

Douchermann

  • Dominant Queen
  • ****
  • Posts: 397
Re: Short Questions Thread
« Reply #223 on: September 26, 2009, 06:21:07 AM »
@basstabone - It all depends on the vice.  Think of mechanical advantage - if you have a very large vice, and it is held down very very securely, you could add a 'cheater bar' making the mechanical advantage very high.  For the same reasons sedit suggest, I can't give a whole lot more information, so don't post back describing your vice hahaha.  I have no interest in what you're pressing, but I can only imagine it's custom dose levels of vitamins, caffeine, or amino acids.  Just know that if the tablets are not strong enough, you have to step up to better means of compression (such as a hydraulic press).

@sedit - I don't know for sure, but I believe that the dissolving metal reaction will not adversely affect the alkane.  I know they are not strong enough to hydrogenate rings, and there are no unsaturated bonds from what I'm guessing.

timecube

  • Subordinate Wasp
  • ***
  • Posts: 230
Re: Short Questions Thread
« Reply #224 on: September 26, 2009, 02:06:58 PM »
I have a question about a part of one of Shulgin's DMT syntheses:

Quote
(from indole) To a well stirred solution of 10 g indole in 150 mL anhydrous Et2O there was added, dropwise over the course of 30 min, a solution of 11 g oxalyl chloride in 150 mL anhydrous Et2O. Stirring was continued for an additional 15 min during which time there was the separation of indol-3-ylglyoxyl chloride as a yellow crystalline solid. This intermediate was removed by filtration and washed with Et2O. It deteriorates at a significant rate at room temperature, and should be used as soon as possible after preparation. The diethylether in this synthesis can be replaced advantageously with t-butylmethylether (TBME) which works well as a solvent in this reaction, but which avoids the potential danger associated with peroxide formation. The above indol-3-ylglyoxyl chloride was added to 20 g anhydrous dimethylamine in 150 mL cold, stirred anhydrous Et2O. When the color had largely been discharged, there was added an excess of 2N HCl, the mixture was cooled, and the resulting solids were removed by filtration. These were recrystallized from EtOAc to give, after air drying, 14.6 g (79%) indol-3-yl N,N-dimethylglyoxylamide with a mp of 159-161 °C.

What I am trying to understand is why does the indol-3-ylglyoxyl chloride react with the dimethylamine, but not react with the nitrogen on the rings of other indol-3-ylglyoxyl chloride molecules to form polymers? (see attached image)  Is it some sort of steric hindrance?  I don't see what would really be getting in the way.

I am trying to determine if something like 3-(2-chloroethyl)indole could be used similarly.
« Last Edit: September 26, 2009, 02:17:23 PM by timecube »

heisenberg

  • Dominant Queen
  • ****
  • Posts: 268
Re: Short Questions Thread
« Reply #225 on: September 27, 2009, 08:47:41 AM »
I'm curious....

Is there any reason why the benzoquinone can't be generated in-situ in a p-methoxyphenol synthesis?
I spent all my money on booze and hookers, the rest I wasted - Charles Bukowski

2bfrank

  • Guest
Re: Short Questions Thread
« Reply #226 on: September 27, 2009, 09:49:57 AM »
yeah, Id go steric, the lone pair on the diethylamine is sitting more exposed compared to the indole which is somewhat boxed in, well compared to dethylamine it is more so.. I was going to go some form of entropy consideration, but I dont think their is going to be a change in the number of particles present, before or after reaction, hence it would have to be steric..
« Last Edit: September 27, 2009, 10:06:02 AM by 2bfrank »

2bfrank

  • Guest
Re: Short Questions Thread
« Reply #227 on: October 01, 2009, 04:17:09 AM »
Hey Ho, got a question with respect to ammonium acetate.. I remeber once mixing NH3OH and GAA, till pH 7 and placing this in a cupboard that was in a position that was dark and cold, I forgot, and returned aound 2 maybe 3 months, and found crystals. I now think that the purity would not be their, and besides that, I have looked for it now for a cople of days(3), and cannot find it.. I have since tried to repeat, albeit placing it in a very low heat oven, say 40 C..Which ended up not crystalising..(daH).So giving this some ACTUAL thought, the vapor pressure of the aquarious base, is higher than the acid, hence the loss of NH3, and difficulties, to do this by simple evaparation.

I then checked out SM here.. http://www.sciencemadness.org/talk/viewthread.php?tid=12853
where, amongst a couple of ideas, it was suggested to allow a flow of NH3 to the surface of the mix.
I have since thought that perhaps if one added the base and acid, but instead slightly more base, and then heating slowly and low-  to remove the H2O., plus of course some of the NH3..and regularly check the pH, and always keeping it at around 7.5 and do so untill one is close to crystals..THis is just an idea,as I'd prefer not to have to run gasous NH3 over the mix.

ANy ideas, would be really welcomed..I dare say their is perhaps a much more easier method, and if anywhee, Here would have this. Thanks for any help, as I REALLY need this bigtime, but dont want to buy

poisoninthestain

  • Dominant Queen
  • ****
  • Posts: 298
Re: Short Questions Thread
« Reply #228 on: October 01, 2009, 04:33:05 AM »
@2B-even lab grade ammonium acetate is very wet almost like a slushy...it's definitely not easy to dry it, as I've dried many times with NH3OH and GAA...crystalization from an aqeous solution is VERY hard, and usually not worth it since it sucks water out of the air so quickly it's literally a puddle within 10 minutes on standing...however mixing equimolar amounts of GAA and NH3OH and using the resulting liquid is sufficient for most reactions, unless of course you need absolutely anhydrous conditions.


2bfrank

  • Guest
Re: Short Questions Thread
« Reply #229 on: October 01, 2009, 05:02:15 AM »
Thanks mate, and yes I need to think the use of this, and also vacuum disciator may help if dry dry is required. thats if youve got crystals to begin with, which prompted my quizing....
What I am looking at here, is a condensation type reaction between phenylnitroethane and CH2O.  I dont want  a nitroaldol - other than as intermediate and want the alkene of 3-phenyl-2-nitroprop-1-ene. as final product, for this part of the reactions.....I am still learning the reaction albeit this one pretty well covered, but due to not finding that much regarding a K-type condensation between the phenylnitroethane and little old formaldehyde etc. I am just trying to think this through..
« Last Edit: October 01, 2009, 05:13:45 AM by 2bfrank »

zzhuchila_clocker

  • Subordinate Wasp
  • ***
  • Posts: 167
Re: Short Questions Thread
« Reply #230 on: October 01, 2009, 03:04:28 PM »
2 timecube
That is because indole is aromatic compound and nitrogen's electron pair(needed for all reactions like alkylation/acylation) is participating in formation of aromatic structure, thus it can not be even protonated because of that(indole does not possess basic properties).  Here you can see the same game with pyrrole http://commons.wikimedia.org/wiki/File:Pyrrole_Resonance.png  Indole would just have more resonance structures.
Remember, that an aromatic compound should be a cycle with conjugated structure having 4n+2 electrons on p-orbitals, where n is counting number. Benzene - 6 electrons from 3 double bonds, pyrrole, furan, tiophene - 6 electrons, 4 from two double bonds, and 2 from heteroatom. Pyridine - 6 electrons, from 3 double bonds (yes,  nitrogen electron pair is not participating in delocalization, and thus pyridine is a base and can be alkylated).  
« Last Edit: October 01, 2009, 07:18:19 PM by zz-zhuchila »
Who stuff the banks? Who staff the party ranks? More for Gore or the son of a drug lord?
None of the above, fuck it, cut the cord!
Lights out.. guerrilla radio
Turn that shit up

heisenberg

  • Dominant Queen
  • ****
  • Posts: 268
Re: Short Questions Thread
« Reply #231 on: October 03, 2009, 05:29:16 PM »
Does anyone have a hi-res copy of the hive bee picture?
I spent all my money on booze and hookers, the rest I wasted - Charles Bukowski

Vesp

  • Administrator
  • Foundress Queen
  • *****
  • Posts: 3,130
Re: Short Questions Thread
« Reply #232 on: October 03, 2009, 06:32:37 PM »
I don't think it was ever that high of resolution.
Isn't this all it ever was? http://a203.ac-images.myspacecdn.com/images01/16/l_785de4c8739b260df04b37bf5b641852.gif
If you find a better one... post it here :D
Bitcoin address: 1FVrHdXJBr6Z9uhtiQKy4g7c7yHtGKjyLy

heisenberg

  • Dominant Queen
  • ****
  • Posts: 268
Re: Short Questions Thread
« Reply #233 on: October 03, 2009, 06:44:01 PM »
The best one I have is http://i34.tinypic.com/2meln5.gif

I think it would go great on a shirt.
I spent all my money on booze and hookers, the rest I wasted - Charles Bukowski

Vesp

  • Administrator
  • Foundress Queen
  • *****
  • Posts: 3,130
Re: Short Questions Thread
« Reply #234 on: October 03, 2009, 06:52:16 PM »
Yeah, other then the people who knew what it was would either be law enforcement or a friend.

I like the don't tread on me picture of it that I made out of it.
Since they saying "Don't tread on me" is often used in protest against a large government, and that we need more liberty.
Bitcoin address: 1FVrHdXJBr6Z9uhtiQKy4g7c7yHtGKjyLy

Naf1

  • Foundress Queen
  • *****
  • Posts: 753
Re: Short Questions Thread
« Reply #235 on: October 04, 2009, 02:28:04 AM »
That was the minuteman flag, (wasnt it?)

btw; How hard would it be for you to increase the size of the avartars?

Vesp

  • Administrator
  • Foundress Queen
  • *****
  • Posts: 3,130
Re: Short Questions Thread
« Reply #236 on: October 04, 2009, 03:05:52 AM »
I just changed it from 65x65 to 130x130.
Re-uploading the picture might make it bigger if it doesn't automatically.

It might be both flags, I'm not to sure.


Edit: Yeah.. just upload it again and it should be at 130x130

Think this is a good size? to big? to small? to square?
« Last Edit: October 04, 2009, 03:10:39 AM by Vesp »
Bitcoin address: 1FVrHdXJBr6Z9uhtiQKy4g7c7yHtGKjyLy

Naf1

  • Foundress Queen
  • *****
  • Posts: 753
Re: Short Questions Thread
« Reply #237 on: October 04, 2009, 03:19:52 AM »
Wow, that is big! I like them better big, but maybe that is a bit big. I dont know, I guess it depends on what you and everyone else thinks. As long as it doesnt go back 65x65 I am happy, THANKS!

2bfrank

  • Guest
Re: Short Questions Thread
« Reply #238 on: October 04, 2009, 04:06:50 AM »
I am drying some magnesium sulfate and am trying to find a suitable container. Will a jar with a ground glass joint keep it dry?

I dry my salt, and I also put cotton wool just at the end, not to make it discolor, but get any moisture out, I then find a good screw lid jar, and of course dried, and I put the salt in, and then I add the dried cotton woo on top , and I then run teflon tape, plumber stuff, around the screwlid and screw it tight...I do the same for solution, but of course not the cotton wool.....what you could do, is cut some material, that is not to densely woven, and add dried silicon gel, tie it in a bundle, and place that in the jar...

2bfrank

  • Guest
Re: Short Questions Thread
« Reply #239 on: October 04, 2009, 04:12:51 AM »
Got given this tab called zanax or something, not really into the benzo type things, but fuck, I went all slurry and slept for 16 hours.. Fuck, I m stillll all slurry and dazed, so it aint my thing...Also whilst Im here, and slllurrry, what is the best way to remove evidance of reactions that could be percieved by the FUCKS if they ever did the swob thing on glassware...I was thinking Caro's acid, but I vaguely remember Sedit saying something on these lines, due to potentially dumping this shit to remove everything..