• carbohydrate detritylation

    Updated: 2023-04-30 00:21:17
    : Chemical Forums 1 Hour 1 Day 1 Week 1 Month Forever April 30, 2023, 03:57:06 PM Forum Rules Read This Before Posting Home Help Search Login Register Chemical Forums Chemistry Forums for Students Organic Chemistry Forum carbohydrate detritylation previous next Print Pages : 1 Go Down Topic : carbohydrate detritylation Read 39 times 0 Members and 1 Guest are viewing this topic . Humr Regular Member Posts : 23 Mole Snacks : 0 0 Gender : carbohydrate detritylation : on Today at 08:21:17 AM Hello , I am trying to prepare 1,2,3,4-tetra-O-acetyl-α-D-glucopyranoside . My starting compound is glucopyranoside with trityl on primary OH . Has someone any experience with this deprotection I tryed textbook conditions for detritylation TFA DCM 1:10 and i obtained mixture of products . Products are

  • Re: Measuring sticky chemical to round bottom flask

    Updated: 2023-04-29 22:36:37
    If you can use a solvent - just do it. bsp I would try to pour a bit of the initiator into a beaker (not that difficult to weight) and dilute with the solvent. Solution should have much lower viscosity and would be probably easy to transfer into a flask. You may need some tricks to make sure you know the concentration, but it is all a matter of tracing masses of everything involved in the process.Besides, if the initiator is that sticky even mixing it with other reagents can be tricky, so the solvent can make it easier to homogenize the solution and get the polymerization right in all the volume.

  • Re: Need to make a Firestopping Wetsuit...

    Updated: 2023-04-29 20:34:49
    Mix sodium bicarbonate in the chloroprene?As a teen, I did it with epoxy, it works. Heat decomposes the bicarbonate which emits carbon dioxide that keeps further heat at large. Within limits as usual.Anyway, heating chloroprene or any chlorinated organics near one'#039s nose is a bad idea. The fumes are toxic and repellent for real.The bicarbonate idea was already known when I was young. (Neolithic had already begun)

  • Notes on Depression

    Updated: 2023-04-28 21:50:55
    Oh no! Is this another gush of Too Much Information that no one really wants to hear? I guess it could be. As it happens, I’ve accumulated a lifetime of insights into depression that could be lost if I happen to suddenly fall over dead. It would be a shame to not pass it along, […]

  • An AI visit

    Updated: 2023-04-28 19:11:46
    Wow. This gives me chills. In the last week this blog has been visited twice by chatgpt-content-generator.online. If AI is getting content from me, what other crazy sh*t are they retrieving?

  • US should begin laying the foundation for new and advanced nuclear reactors

    Updated: 2023-04-27 16:09:06
    Skip to content Menu Our Bloggers Twitter Google News Substack FaceBook Contribute Contact Search US should begin laying the foundation for new and advanced nuclear reactors April 27, 2023 U.S . National Academies of Sciences , Engineering , and Medicine Credit Pixabay New and advanced types of nuclear reactors could play an important role in helping the U.S . meet its long-term climate goals , but a range of technical , regulatory , economic , and societal challenges must first be overcome , says a  new report  from the National Academies of Sciences , Engineering , and . Medicine Development , testing , and widespread deployment of these reactors could take several decades . The report makes recommendations for the U.S . Department of Energy , the Nuclear Regulatory Commission , other

  • Oh Tucker!

    Updated: 2023-04-25 22:40:37
    I really want to blather on about the Fox talking head Tucker Carlson and how he got himself dumped from his network. But that would be indecent self-indulgence. Instead, I’ll just bathe in the warm glow of schadenfreude.

  • The West Cannot Slide Into Isolationism

    Updated: 2023-04-21 16:57:16
    Along with the fact that #45 is running for president again is the sickening prospect of two more years of news coverage of his orange face spewing streams of lies, exaggerations and deflections. Broadcasters and news providers in all media can’t resist the bloviating #45 because he attracts admiring eyeballs and those enchanted by the […]

  • Economic Foams and Lithium

    Updated: 2023-04-20 16:37:01
    While cockeyed optimists are working toward a new age of electric vehicles in the glare of an admiring public, I find myself standing off to the side mired in skepticism. What are the long-term consequences of large-scale electrification of transportation? The industrial revolution as we in the west see it began as early as 1760 […]

  • Fracking with PFAS

    Updated: 2023-04-18 23:00:06
    According to an article in The Hill, the organization Physicians for Social Responsibility published a detailed report on the state of PFAS usage in oil and gas drilling operations including fracking. Note that many if not most states allow drillers to claim that the components of their drilling fluids are a trade secret and exempt […]

  • A Perfluorinated Fiasco

    Updated: 2023-04-17 22:05:44
    Good gravy. What a freakin’ mess. It seems like everywhere investigators look, they find perfluorinated alkyl residues- drinking water, fish, people, etc. These fluorinated substances are known as PFAS, PFOS, PFOA, PFHxS or perfluorohexane sulfonic acid, and PFNA or perfluorononanoic acid. The “per” in front of perfluorinated just means that the molecule has as many […]

  • Xylazine- Yet Another Curse

    Updated: 2023-04-14 23:34:41
    The Drug Enforcement Agency (DEA) reports that it has seized xylazine and fentanyl mixtures in 48 of 50 states in the US. They mention that while fentanyl is responsive to naloxone, xylazine is not an opioid. Consequently, an overdose of a fentanyl/xylazine mixture may not respond to naloxone as expected. DEA says that the great […]

  • Dehumanization of the American Experiment

    Updated: 2023-04-14 16:17:12
    A few years ago I found myself wandering through the Denver Museum of Nature and Science where I happened upon a robotics exhibition. In terms of the museum arts and sciences it was well conceived and executed, complete with a topical gift shop in the exit. All of the displays were accessible to the public […]

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