Diazepam (valium) C16H13ClN2O

  • Appearance: White solid
  • Molar Mass: 284.74 g/mol
  • Density: 1.08 g/cm3 (at 20°, solid)
  • Melting Point: 125-126°C
  • Boiling Point: n/a 
  • pKa: n/a

Diazepam is a benzodiazepine and well-known sedative used to combat all sorts of conditions like anxiety, depression, seizures, and even restless leg syndrome. While having a wide range of uses, it also comes with some bad paradoxical effects like actually worsening seizures. It is most well known for subduing anxiety attacks since diazepam rapidly sets in. It should be noted that it is highly advised not to overuse diazepam due to easy dependency formation. 

A Bed of Roses [6]

Chapter 5 - Chapter 6 - Chapter 7 

6114 words

Genre: Fluff, Angst, Superpower!Au

“Welcome.” He blinks once before entering the white conference room. The nurse trails behind him and the large doors close shut.

“Good to see you.” He greets the man wearing a suit, sitting at the front with a nod before taking a seat at the long table.

“Do we have the test results?”

“We do.” He turns to the nurse and she takes a second before realization hits her, scrambling to open the files in hand.

“Well…how are they?” A lady sitting across asks, legs crossed and hands buried in the pockets of her white lab coat.  

Keep reading


Acid-catalyzed addition of water to an alkene and an alkyne

In an acid-catalyzed addition of water to an alkene, the product will be a markovnikov addition where water is added to the more stable carbocation to form an alcohol. The water is protonated by the sulfuric acid (or any suitable acid) and is then deprotonated by the alkene. This forms a carbocation in the more stable position. In the case above, the middle carbon is becomes a 2° carbocation, where as a terminal carbon would form a 1° carbocation (unstable). The water attacks the carbocation and is then deprotonated by the surrounding water, forming the alcohol. The reaction takes place in water, which is why water can just come in and protonate and deprotonate. 

The acid-catalyzed addition of water to an alkyne is not as simple. As before, the water is protonated by the sulfuric acid and is attacked by the alkyne. However here, the alkyne and water form a sort of “pi-complex” at the hydrogen. Here, there is partial positive charges forming at both ends of the triple bond. Another water molecule comes and attacks the alkyne at the internal carbon, because here the partial positive charge from the pi-complex is more stable due to being a 2° carbon (where as the terminal carbon is a 1° carbon). This second water molecule breaks the pi-complex and forms a protonated enol, an alkene with a double bond. The water then deprotonates the enol and it then is tautomerized from an enol to a ketone. The electrons on the hyrdoxyl group flow down and form a protonated carbonyl (a carbon-oxygen double bond). This is then deprotonated by water to form the stable product, a ketone. The idea behind keto-enol tautomerism is that there is a rapid equilibrium between the enol and keto form of the compound, however there is more of the keto form due to it being the more stable. 


(−)-trans9-tetrahydrocannabinol (THC) C21H30O2

  • Appearance: clear solid crystal (cold), waxy, viscous (warm)
  • Molar Mass: 314.469 g/mol
  • Density: n/a
  • Melting Point: n/a
  • Boiling Point: 250°C
  • pKa: n/a
  • (literally could not find ANY data for this)

Tetrahydrocannabinol is the main psychoactive component of cannabis. It has some analgesic effects and is known to increase appetite and enjoyment of food. It’s most famous for it’s effects on cognitive functions, leading to the substance being banned in many areas. These effects can actually be lessened by opioid receptor antagonists like naloxone. While being an illegal substance, the medical properties of THC have been investigated and seems to have many beneficial properties for those undergoing chemotherapy, people suffering from AIDS, multiple sclerosis, and neurological disorders like Tourette syndrome. The main metabolite of THC is 11-hydroxy-Δ9-tetrahydrocannabinol (11-OH-THC), where the methyl group gains a hydroxy group. 


Dopamine C8H11NO2

  • Appearance: Colorless solid
  • Molar Mass: 153.18 g/mol
  • Density: 1.26 g/cm3 (at 20°, solid)
  • Melting Point: 128°C
  • Boiling Point: decomposes 
  • pKa: n/a (an anime, so it’s an organic base). 

Dopamine is a neurotransmitter in humans and animals. It has a major role in reward-motivation. Dopamine is released into the brain in increased levels when “rewards” are completed. Several addictive drugs play on this like cocaine and amphetamine-based drugs. Outside the nervous system and the brain, dopamine does have some uses in the body like an inhibitor to norepinephrine in blood cells and increasing sodium excretion. Dopamine gets it’s name from it’s metabolite precursor, L-DOPA. Dopamine however cannot breach the blood/brain barrier, however it still is useful if it’s needed to be intravenously infected. In the body, it’ broken down by the enzyme monoamine oxidase via oxidation. However it can also be autooxidized by direct oxygen, resulting in quinones and free radicals. One of dopamine’s nicknames is the “pleasure chemical”. 


Methylamine CH5N

  • Appearance: Colorless gas
  • Molar Mass: 31.06 g/mol
  • density: 694 kg/m3
  • Melting Point: -93.10 °C
  • Boiling Point: -6.6°C 
  • pKb: 3.36

Methylamine is a derivative of ammonia and is the simplest primary amine. It’s commonly sold as anhydrous gas in metal containers. It’s a relatively easy compound to synthesis in lab, being a simple reaction between methanol and ammonia. Methylamine is a great nucleophile that’s also highly basic with little to no hindrance. Liquid methylamine has solvent properties similar to ammonia. It is toxic and listed as a List 1 Precursor chemical by the DEA since it’s well known for it’s use in the production of methamphetamine. 


Addition of Hydrogen Halides to Alkenes and Alkynes

When a hydrogen halide (bromide or chloride) to an alkene, the double bond attacks the hydrogen, forming a carbocation on the more stable carbon (generally always a 2° or 3°) and a bromide ion. The bromide ion reacts with the newly formed carbocation to form the alkyl halide. it’s a very simple reaction.

The exact same thing occurs when reactings an alkyl halide with an alkyne, however after it’s been reacted, it can have a second hydrogen halide added to it, resulting in a geminal alkyl halide. When the second hydrogen halide is added, it undergoes the same reaction, resulting in the diaddition shown. 

edit: oops fixed the direction of the arrows in the carbocation/bromide part. Thanks to rougelette for pointing it out!!


Acetylsalicylic acid (ASA, Aspirin) C9H8O4

  • Appearance: White solid
  • Molar Mass: 180.157 g/mol
  • Density: 1.40 g/cm3
  • Melting Point: 136°C
  • Boiling Point: 140°C (decomposes)
  • pKa: 2.98

Acetylsalicylic acid is an analgesic and antipyretic. It’s most well known as the main ingredient of Aspirin. It’s through to be effective at preventing certain cancers. it’s an acetyl derivative of salicylic acid. ASA is stable when dry but in the presence of moisture, it hydrolyses to acetic acid and salicylic acid. It’s not easily soluble in the stomach’s acidic conditions, delaying absorption of larger doses. 

The Grignard reagents are a great pathway to understand and are a good start to organometallic chemistry. In RED is the formation of a basic Grignard reagent. Using a organohalide like bromobenzene, the Grignard reagent will form by adding fresh magnesium in dry Diethyl ether (or just an aprotic solvent). The reagent is made when the magnesium inserts between the benzene and the bromide, forming the benzene-magnesium bromide compound seen above. However it’s commonly drawn with a covalent bond going from the magnesium to the benzene but in reality a carbanion is formed at that spot and the bond acts in between a covalent and an ionic bond. This lets the Grignard act as a great nucleophole.

The BLUES text shows the synthesis of triphenylmethanol by reacting two equivalents of the newly made Grignard reagent with one equiv. of ethyl benzoate. The nucleophiles are very attracted to the carbon in the ester and attack it, sending the electrons up the oxygen and forming a tetrahedral intermediate. The oxygen sends down the electrons to reform the carbonyl and shoot off the ethoxide group, which is a better leaving group and anything else at the moment. We then form a diphenyl ketone which is attacked by the second equivalent of Grignard. Once it forms the tetrahedral intermediate, however, nothing leaves easily and the oxygen is protonated via acid work up.

I messed up slightly by not making the arrows go both ways since the phenyl rings can get knocked off and then reattack but eventually it will push to the final product.


Adamantane C10H16

  • Appearance: White/off-white powder
  • Molar Mass: 136.23 g/mol
  • Density: 1.08 g/cm3 (at 20°, solid)
  • Melting Point: 270°C
  • Boiling Point: sublimes 
  • pKa: n/a

Adamantane is a crystalline compound and is the simplest diamondoid. It consists of four cyclohexane rings in the “armchair”. The arrangement of atoms in adamatane is the same as a diamond crystal. Adamantane is unique in that it is rigid and almost free of strain and stress. It was first synthesized from Meerwein’s ester, however this process resulted in very low yield. Adamantane cations can be produced and are highly stable, and this is due to a three-dimensional aromaticity (homoaromaticity). Since it is an unfunctionalized hydrocarbon, it’s uses are limited, however aminoadamantanes have come up in medicine as an antiviral for influenza (though this has been discontinued) and as an antiparkinsonian drug. 


Acetaldehyde C2H4O

  • Appearance: Colorless liquid
  • Molar Mass: 44.05 g/mol
  • Density: 0.784 g/cm(at 20°C)
  • Melting Point: -123.37°C
  • Boiling Point: 20.2°C 
  • pKa: 13.57

Acetaldehyde is one of the most important aldehydes, occuring in coffee and bread. It’s more well known as being the metabolite of ethanol by alcohol dehydrogenase, thought to be the main cause of hangovers. It undergoes keto-enol tautomerism, but only a small fraction of acetaldehyde is in the enol tautomer. Acetaldehyde used to be a precursor to acetic acid, however now it’s more important as a precursor to pyridine derivatives like pentaerthritol. It’s toxic when applied for extended periods, is an irritant on the skin, eyes, and mucous membranes, and is a possible carcinogen. It’s found smoke from cannabis and tobacco.


Disulfiram C10H20N2S4

  • Appearance: Beige powder
  • Molar Mass: 296.539 g/mol
  • Density: 1.3 g/cm3
  • Melting Point: 71.5°C
  • Boiling Point: 117°C (at 17 mmHg)
  • pKa: n/a

Disulfiram is a drug that is used to support chronic alcoholism by blocking the enzyme that breaks down acetaldehyde to acetic acid, causing a build up. Acetaldehyde is the metabolite of ethanol after it’s been broken down by alcohol dehydrogenase. The build up of acetaldehyde is what is generally thought to be the cause of a “hangover”. Thus, disulfiram causes a larger build up of acetaldehyde, which leads to a more severe hangover. This effect is what can lead to the breaking of chronic alcoholism.

Doing experiments with an aerobic oxidation using a copper-amine complex as a catalyst. 

The 7 colorful solution in the vials are reaction mixtures with the same reactants in different solvents (methanol, ethanol, propanol, acetonitrile, ethyl-acetate, diemthylformamide, dimethylsulfoxide, ect.). Here I would like to know that which solvents could be used for this oxidation. 

Luckily in 40% of the solvents, something happened.


Diethyl Ether C4H10O

  • Appearance: Colorless liquid
  • Molar Mass: 74.12 g/mol
  • Density: 0.7132 g/cm3
  • Melting Point: -116.4°C
  • Boiling Point: 34.6°C
  • pKa: -3.5 (conjugate acid)

Diethyl ether, also known as just “Ether”, is a flammable, volatile liquid used primarily as a solvent. It also has uses as a general anesthetic with narcotic properties but it’s use has been discontinued for safer, halogenated anesthetics. It has a major drawback of causing psychoactive addiction, called etheromania. 


Cis/Trans and E/Z Naming

  • Cis - same side
  • Trans - opposite side
  • E - opposite size (think eppesite side)
  • Z - same side (think zame zide)

When you name alkenes, you have to account for the isomer that you’re talking about. Cis/Trans naming is used for alkenes in chains or disubstituted alkenes like the top row of alkenes, 2-butene and 3-hexene. Cis/Trans and E/Z could be applied to these. The cis isomer is when the two hydrogens are on the same side of the double bond and the two alkyl chains are on the other. The trans isomer is when they’re switched. So going across the image above, the structures would be:

  • Trans-2-butene or (E)-2-butene
  • Cis-2-butene or (Z)-2-butene
  • Trans-3-hexene or (E)-3-hexene
  • Cis-3-hexene or (Z)-3-hexene

Once there is more than one substituent on each sp2 carbon, the cis/trans naming cannot be used. E/Z naming is essentially the same thing, however it’s based on the “weight” and “heaviness” of the substituents. The heavier the substituent, the higher it ranks. When judging how to name E/Z, the attachments on each sp2 carbons are identified, never judge across the double bond. Only compare the two substituents connected to the same carbon, as circled in the image above. The heavier one is chosen. In the second row, there is:

  • (E)-2,3-dibromo-2-butene
  • (Z)-2,3-dibromo-2-butene
  • (E)-3,4-dimethyl-3-hexene
  • (Z)-3,4,-dimethyl-3-hexene

Issues arise when the same substituent is connected to the same carbon like the first two structures in the third row. The first structure has two ethyl groups coming off the sp2 carbon and in the second one, there are two hydrogens on the sp2 carbon. This leaves it so that there can’t be isomers of the structure. Underneath, on the last row, is maleic and fumaric acid. These two are isomers of each other and are common examples of E/Z isomers. The last structure is (Z)-4-methyl-1,4-hexadiene. You’ll notice that there are two double bonds in the structure, but only one of them can be an E/Z. Since the terminal double bond has two hydrogens, it’s ineligible to be an isomer. 

(sorry for the long post, I hope this helps!!)


Tetrahydrofuran (THF) C4H8O

  • Appearance: Colorless liquid
  • Molar Mass: 72.11 g/mol
  • Density: 0.8892 g/cm3
  • Melting Point: -108.4°C
  • Boiling Point: 66°C
  • pKa: n/a

THF is a 5 atom heterocyclic compound and is a constitutional isomer of diethyl ether. It’s a common solvent in the lab as one of the more polar ether solvents. It’s not considered to be excessively toxic but it is known to penetrate the skin and cause rapid dehydration. It can also form explosive peroxides. THF is used as a main solvent in hydroboration-oxidation to form primary alcohols. It’s also used to dissolve polymers and is a precursor to many polymers.


Cyclohexane C6H12

  • Appearance: Colorless liquid
  • Molar Mass: 84.16 g/mol
  • Density: 0.7781 g/cm3
  • Melting Point: 6.47°C
  • Boiling Point: 80.74°C
  • pKa: 45

Cyclohexane is a six member carbon ring that is used as a nonpolar solvent in lab. It’s a rather unreactive compound on it’s own but it’s an extremely useful precursor compound and building block. It can be formed by hydrogenating benzene. Due to the lack of a continual pi bond like benzene, it’s not a planar molecule and can have multiple different conformers, the most stable being the “chair” formation, shown above. It’s most easily represented by the hexagon, however that is not accurate as it implies a planar shape. Cyclohexane’s hydrogens/substituents also react in a special manner, in regards to their orientation on the cyclohexane ring.  


Benzene C6H6

  • Appearance: Colorless liquid
  • Molar Mass: 78.11 g/mol
  • Density: 0.8765 g/cm3
  • Melting Point: 5.5°C
  • Boiling Point: 80.1°C
  • pKa: n/a

Benzene is a 6-carbon aromatic ring. It has a continuous pi bond but is often depicted with alternative single-double bonds. It’s highly flammable and is a common part of gasoline, due to it’s high octane number. It’s a precursor to countless other organic compounds and is also used as a solvent. Benzene is carcinogenic so it’s uses have been cut down drastically. Toluene, a methylated benzene, has mostly replaced benzene in the lab since they are so similar and Toluene is less toxic.

Diethyl ether and dimethyl sulfoxide. 

If a few drops of hexane is added to the ether, it will become completely immiscible with dimethyl sulfoxide, so useful compounds could be easily extracted from it, while highly polar inorganic salts remain in the DMSO. 

In this case I needed to extract a ketone from the DMSO what contained chromium(III) what caused this green color.

P.S.: did you know, that there is a blogger here on Tumblr with dimethylsulfoxide in its url? If not, let me introduce you an awesome chemistry blog: http://dimethylsulfoxide.tumblr.com/