poormanschemist

In this video I demonstrate how to do thin layer chromatography by carrying out the process on harmala alkaloid extracts from three different plants: peganum harmala (syrian rue), passiflora incarnata (passion flower), and banisteriopsis caapi (the ayahuasca vine). I also discuss the various harmala alkaloids in detail as well as the use of thin layer chromatography to monitor the progress of organic syntheses.

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In this video I prepare sodium orthotellurate Na6TeO6 from telluric acid Te(OH)6 using molten sodium hydroxide. Just a heads up the text in the video is a little screwy for some reason. They are still readable so I decided to go with it rather than spend hours trying to fix it. I will make sure the text is fixed in the next video.

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In this video I demonstrate an analytical technique often used in organic chemistry to confirm the identity and/or purity of a solid compound with a reasonably sharp melting point.

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This synthesis is the first step in the conversion of vanillin to 3,4,5-trimethoxybenzaldehyde, the immediate precursor to mescaline. The prep of 5-bromovanillin from vanillin and bromine in methanol is an easy prep to carry out and would be a good organic synthesis for a beginner amateur chemist.

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In this video I carry out the prep of beta-nitrostyrene from benzaldehyde and nitromethane as described in Vogels Textbook of Practical Organic Chemistry, 5th Edition, page 1035. This type of reaction is called a Henry Reaction and it has great synthetic utility as a carbon-carbon bond forming reaction. This kind of reaction featured heavily in the various synthetic procedures given in PIHKAL although I should stress that beta-nitrostyrene itself is neither listed nor controlled and can't be used to make any controlled substance that I am aware of (not easily anyways).

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In this video I prepare α-tellurium trioxide TeO3 from orthotelluric acid Te(OH)6 or as it is more commonly written H6TeO6. α-TeO3 is more reactive than β-TeO3 and forms tellurates on reaction with strong alkali. Hot tellurium trioxide is also a powerful oxidizing agent.

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There was some kind of glitch with this video and it wouldn't play. Trying to reupload it to see if that fixes the problem.

In this video I carry out a superior prep of pure selenic acid from elemental selenium using a technique that I read about on atomistry's page about selenic acid (linked below). Crushed gray selenium is dissolved in HNO3 and the resulting mixture of HNO3 and H2SeO3 is oxidized using one of several reagents. I chose elemental bromine but chlorine can be used if steps are taken to prevent the HCl formed from reducing selenic acid back to selenous acid (HBr does not have this problem which is why I went with Br2 instead). Other choices are potassium bromate, potassium permanganate, or you could just dissolve selenium in chloric acid. Once oxidized the mixture is made slightly alkaline with ammonia water and then the selenate ion is precipitated out by addition of aqueous barium chloride. The barium selenate is filtered off (it filters very easily unlike barium sulfate), rinsed well, and then mixed with slightly less than the stoichiometric amount of 1.65M H2SO4 (any dilute strength is OK). The mix is heated, the barium sulfate filtered off (UGH!) and then the solution evaporated down at a temp of less than 120C to give pure aqueous selenic acid.

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In this video I prepare selenium dioxide from pellets of elemental selenium. The final product is sublimated in order to purify it. Selenium dioxide is a precursor to many other selenium compounds and it is also a reagent in organic synthesis (Riley oxidations).

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A short video showing selenium dissolving in hot, concentrated nitric acid to produce a mixture of selenous acid and selenic acid. The brown gas is nitrogen dioxide.

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In this video I first convert chunks of elemental tellurium into what is probably tellurium dioxide. This is then used to prepare (NH4)2TeCl6 from ammonium chloride and HCl.

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Rhodanide Video "Chemistry short: Tellurium Decaoxotrisulfate"
https://www.youtube.com/watch?v=sd-i0WOPEz8

In this video I prepare (ACN)2Pd(NO2)2 from (ACN)2PdCl2 using silver nitrite that I prepared from silver nitrate and sodium nitrite. Bis(acetonitrile)dinitropalladium(II) is used in organic chemistry for the oxidation and nitration of alkenes (Encyclopedia of Reagents for Organic Synthesis).

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In this video I make up a complex of palladium dichloride and acetonitrile.

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In this video I make up the zinc-copper couple needed to do the Simmons-Smith cyclopropane synthesis from dibromomethane and I strongly suspect from diiodomethane as well. I've never made or even seen this stuff before so any feedback you guys have would be very welcomed.

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Cyclopropanes from an Easily Prepared, Highly Active Zinc-Copper Couple, Dibromomethane, and Olefins
Free paper download:
https://sci-hub.se/10.1021/jo01030a529

Please consider supporting this channel. :-)
In this video I try to reduce potassium hexachloroplatinate(IV) to potassium tetrachloroplatinate(II) using hydrazine dihydrochloride. I think I was partially successful but I am hoping that people who have more experience with this reaction will watch this video and give me some feedback.

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In this video we cover electrophilic addition of halogens and hydrogen halides to alkenes and alkynes, the prep of halohydrins, the synthesis of cyclopropanes (carbenes and carbenoids), syn 1,2-hydroxylation, and the oxidative cleavage of alkenes and alkynes by ozonolysis and KMnO4.

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Cyclopropanes From an Easily Prepared Highly Active Zinc-Copper Couple, Diiodomethane, and Olefins
DOI: 10.1021/jo01030a529
Paper on SciHub: https://sci-hub.se/10.1021/jo01030a529

In this video I demonstrate the preparation of cesium pentaiodoarsenate(III) from arsenic trioxide, KI, CsCl, and conc HCl as well as the preparation of cesium pentaiodoantimonate(III) from antimony trioxide, KI, CsCl, and conc HCl. WARNING: Dissolving As2O3 in warm conc HCl produces a solution of AsCl3 which is a fairly dangerous compound (health rating of 4; basically chemical weapons). SbCl3 is safer to work with (health rating of 2) but I would still be careful with it.

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In this video I review the article "Characterization of the synthesis of N,N-dimethyltryptamine by reductive amination using gas chromatography ion trap mass spectrometry" published in Drug Testing And Analysis in June 2010.

DISCLAIMER: THIS IS JUST AN ARTICLE REVIEW! IT IS NOT A HOW TO VIDEO! THERE ARE NO LABORATORY DEMONSTRATIONS! THIS VIDEO IS PURELY FOR EDUCATIONAL PURPOSES!

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Link to the full paper on SciHub: https://sci-hub.se/10.1002/dta.142
DOI: 10.1002/dta.142

In this video I prepare platinum dichloride using the method described in the Handbook of Preparative Inorganic Chemistry pages 1568-1569. I've been trying to make this fucker for 2 years now and I've failed every time. Until now. :-)

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Goodbye my friend. I will always love you and I will never forget you.

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In this video I prepare an ammine complex of palladium dichloride. Unfortunately I ended up adding way too much ammonia which complicated this otherwise simple prep. After getting some help to know how to go about solving this problem I was able to complete the prep with no issues.

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Diamminedichloropalladium(II) Russian Wikipedia Page (Yandex translation into English):
https://translate.yandex.com/translate?url=https%3A%2F%2Fru.wikipedia.org%2Fwiki%2F%D0%94%D0%B8%D1%85%D0%BB%D0%BE%D1%80%D0%BE%D0%B4%D0%B8%D0%B0%D0%BC%D0%BC%D0%B8%D0%BD%D0%BF%D0%B0%D0%BB%D0%BB%D0%B0%D0%B4%D0%B8%D0%B9&lang=ru-en

In this video we review a paper that covers the extremely useful oxythallation reaction to convert alkenes into aldehydes/ketones. This reaction involves a fascinating controlled molecular rearrangement not seen in oxymercuration-demercuration.

Sci-Hub Article Page: https://sci-hub.se/10.1016/s0040-4039(00)99993-3

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In this video I take you behind the scenes as I prepare Paris Green from arsenic trioxide, basic copper carbonate, acetic acid, and potassium carbonate. I show everything that goes into making a video from coming up with the idea to editing and uploading the finished product. As I was making this video I got my second hard strike on YouTube so you get to see what that's like too.

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In this video we cover extremely useful synthetic methods to convert alkenes to alcohols without all that pesky rearrangement business.

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In this video I carry out the preparation of mercuric acetate Hg(CH3COO)2 from mercuric oxide and 50% acetic acid as described in the Handbook of Preparative Inorganic Chemistry pages 1120 - 1121. The product is recrystallized from warm ethyl acetate. This prep is rather dangerous and the final product is definitely dangerous as it readily flakes and produces dust that is freely soluble in water. Mercuric acetate is very toxic and has a health rating of 4 on the fire diamond which is as high as it goes. The compound is very useful for carrying out the addition of OH to alkenes with Markovnikov regiochemistry but without all those pain in the ass rearrangements. Be good out there you naughty kids. ;-)

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In this video I demonstrate how I recycle the uranium waste left over from doing uranium compound prep videos. This video contains the basic process as well as a step I don't usually do to separate transition metals from actinides based on their reactions with carbonate ion. Normally I do preps of compounds that don't produce waste that contains mixed metals because they are a pain in the ass to separate. But this time my uranium waste was dirtier than usual and there was a little weirdness afoot during part of it so I included this step just to be on the safe side as well as show you all how it's done.

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Created 2 years, 11 months ago.

270 videos

Category Science & Technology

On this channel I focus on making rarely seen chemical compounds and demonstrating other laboratory procedures in my back yard chem lab. Unlike many home chemists I am not big on boom compounds. Instead I like to focus on those elements and compounds best described as "wildly poisonous" that other chemists hesitate to play with. I have a Bachelors degree in chem so yes I do know what I am doing. Although much of my stuff is not really meant for other amateur chemists to repeat (especially not a beginner!!!) I am very active in the amateur/hobby chemistry and I try to be as supportive of amateur chemists as I possibly can.

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