Link to page in question, scroll down to alcohol guidelines: https://food-guide.canada.ca/en/tips-for-healthy-eating/alcohol/
Electrochemical oxidation of primary alcohols – Literature review Importance of alcohol oxidations in pharmaceutical synthesis. The.
Do you need all three of these reagents present for an aldehyde to become a carboxylic acid?
https://preview.redd.it/q84e34asat381.png?width=579&format=png&auto=webp&s=c1ee3ecddc13aba748a9e106006f356cb6e56d59
Or for a primary alcohol being converted to an aldehyde do we def need PCC & either CrO3 or pyridine along with it?
https://preview.redd.it/l6irml0cbt381.png?width=618&format=png&auto=webp&s=bdf99bf1f74d860c09c8c604418dabf1c44246d6
For the MCAT do we have to just memorize that when certain reagents are present oxidation or reduction will occur e.g. when you have a primary alcohol present with PCC, CrO3/pyridine that an aldehyde would form?
Im doing my chemistry IA on 1-butanol, 2-butanol and 2-methyl 2-propanol having different enthalpies of combustion. but I still don't fully understand why that is, any help would be appreciated.
Hi r/mormon! I'm looking for instances where the idea that Joseph Smith refused alcohol during his childhood is presented in church teachings.
I'm well aware that the story we grew up with was likely an embellishment by Lucy Smith.
If anyone is aware of any institutional teachings that were presented in lessons or over the pulpit, I'd love to receive them. Thank you in advance!
Does anyone here have experience with these like n-butanol or 2-butanol, or propanol?
Or other like the typcial 2M2B, maybe even with similar ones?
Our solubility test showed that 1-butanol and 2-butanol are insoluble in 10% NaOH and soluble in conc. H2SO4, while tert-butyl alcohols are soluble in 10% NaOH. Why is that?
I have a history of alcohol abuse and am finally starting to seek treatment. My family has recommended I talk to my primary care physician about my history with alcohol. Can this group provide any clarity about when and how that information could be shared with other parties?
Could my history as an alcoholic be used in divorce proceedings or other court appearances? Would that show up on a background check for a private sector or government job application?
How come trends in melting point / bond length / bond angle for bonds in primary alcohols with successively increasing carbon atoms follows a trend up to propanol where theres a sudden decrease in values? Thank you.
(e.g bond length of C-O in:
- methanol = 1.4528
- ethanol = 1.4569
- propanol = 1.4545 (sudden decrease)
- butanol = 1.4551
- pentanol = 1.4556
Hello again my meady friends! This is a continuation of a deep dive into the voodoo those yeast do and what might go wrong (or right) when fermenting mead. In this case, I read somewhere that fusel alcohols are produced in greater amounts with fruit in primary than with honey alone. Some even claimed that you need the fruit for fusels to be produced in any significant quantity at all. So I found a neat paper that analyzed the volatile alcohol, acid, ester, etc. components produced using two types of honey, with and without blackcurrant added, before and after fermentation. Perfect!
Weeding through the heat map, it appears that honey does indeed produce fusels and a bit more were produced with fruit which is likely due to their relative proportions of sugars contributed. The blackcurrant and different honeys did change the environment for the yeast in many ways that were notably different and perceptible though. I was only looking for one category of alcohols but there's a lot of interesting stuff going on in this study with all the complex components that the fruits and honeys bring, what the yeast typically contribute from consuming the sugars provided and how the fermentation byproducts and processes themselves can evolve all those flavors. It helped to demonstrate how yeast can produce esters that resemble fruits and florals using honey sugars alone which can be further augmented by the fruits and other honey components themselves just as we know different stains can change how volatiles are produced. The fundamental components used to make mead can bring endless results so this is all a good argument to experiment with different ingredients available and to take good process and recipe notes to improve and reproduce good results consistently.
On a side note, you can find some nice data online that shows typical flavor perception thresholds of the major volatile components to compare with papers like these to see how good or awful the test samples might taste and to help determine flavor issues with your mead. So for instance, that "hot paint thinner" taste can be an overproduction of fusel alcohols and acetic acid due to fermentation temp and/or yeast nutrition issues... an
... keep reading on reddit ➡A dearomatization‐rearomatization strategy was developed for palladium‐catalyzed cross‐coupling reactions of phenols and inexpensive primary alcohols to site‐specifically generate ortho‐alkyl‐substituted phenols. Water was the sole by‐product of the reaction, making it a green method for site‐specific synthesis of these phenols.
Abstract
Phenols are common precursors and core structures of a variety of industrial chemicals ranging from pharmaceuticals to polymers. However, the synthesis of site‐specifically substituted phenols is challenging, and thus the development of new methods for this purpose would be highly desirable. Reported here is a protocol for palladium‐catalyzed ortho‐selective alkylation reactions of phenols with primary alcohols by a dearomatization‐rearomatization strategy, with water as the sole by‐product. Various substituted phenols and primary alcohols were compatible with the standard reaction conditions. The detailed mechanism of this transformation was also investigated.
https://ift.tt/36jCiHd
Use of CuO with heat as an oxidizing agent for alcohols seems to be somewhat obscure, so I was wondering whether this will oxidize primary alcohols to aldehydes or to carboxylic acids. Source?
On their own I find them boring if its the sole task. I want something with actual activities and any time I try and search for options it's all the same. I even tried to get into photography just to make exploring more interesting but it doesn't do it for me.
I'm not adverse to nature or any of these things, but they don't motivate me out of the house. I love diving and used to mtb in summer. I go for hikes or long walks when I'm desperate to escape civilization and work but that's all it is.
I'm the problem, really. Things just don't interest me much, but I'm still hoping I can find something.
Phenols are common precursors and core structures of a variety of industrial chemicals, ranging from pharmaceuticals to polymers. However, the synthesis of site‐specifically substituted phenols is challenging, and thus the development of new methods for this purpose would be highly desirable. Herein, we report a protocol for palladium‐catalyzed ortho ‐selective alkylation reactions of phenols with primary alcohols via a dearomatization–rearomatization strategy, with water as the sole by‐product. Various substituted phenols and primary alcohols were compatible with the standard reaction conditions. The detailed mechanism of this transformation was also investigated.
https://ift.tt/36jCiHd
