August 21, 2019, 05:39:09 AM
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Generic Discussion / Re: Fire at Notre-Dame de Paris
« Last post by Enthalpy on Today at 05:08:23 AM »
The journalist took time to consult several sources and his text isn't obviously biassed by some interest. The phrasing doesn't even seek sensationalism. I'm impressed, this is rare.
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This one too looks magic to me: obtain efficiently a cycle with double bonds from varied hydrocarbons in hot air
https://en.wikipedia.org/wiki/Maleic_anhydride
Wiki mentions a catalyst.
3
I started with Friedel-Crafts reaction using propanoyl chloride and AlCl3, with cyclopentylpropane-1-one as a product of the first step. Then I thought about reduction of the ketone using NaBH4 and MeOH resulting into 1-cyclopentylpropane-1-ol (that's the second step). As the third step using TsCl and pyridine to create (1-chloropropyl)cyclopentane.

The problem is that everything that comes to my mind uses only 5 steps, not 6 I need.   :-\
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Generic Discussion / Re: This is what i found inside an abandoned car.
« Last post by Borek on Today at 02:37:31 AM »
Instead of breaking the law you should just call the police.

Topic locked.
5
Generic Discussion / Re: Fire at Notre-Dame de Paris
« Last post by wildfyr on Yesterday at 10:03:38 PM »
https://www.npr.org/2019/08/20/752565861/notre-dame-repair-crews-are-back-to-work-but-paris-lead-concerns-remain

Looks like there has been research and watch dog groups keeping and eye on this, including particle and blood testing.
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I find that it is generally easier to work backwards from the product than the other way around.  Please show us what you have tried so far.
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What wildfyr said (see red link above).  However, I see no harm in a very small hint, which is that I find it is generally easier to work backward from the product.
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So, I found this example of Reppe's [2+2+2+2] cycloaddition reaction as an example of using catalytic systems that improved the synthesis of a otherwise difficult compound in a thesis.


Reppe and coworkers, Justus Liebigs Ann. Chem. 1948, 560, 1, for the Ni reaction.

Are there another examples of reactions like this one? Like the synthesis of adamantane (https://en.wikipedia.org/wiki/Adamantane) from dicyclopentadiene, which is awesome. I'm asking because in our group we use that Reppe example in almost every thesis, but although the reaction is nice, I want to use another alternative, and up to this point I only found this adamantane example.
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Chemical Education and Careers / Re: Doctoral Stay and research groups abroad
« Last post by wildfyr on Yesterday at 09:48:33 AM »
Compile a list of the best 30 or so universities in the world in your field, then go to the group websites and dig for ones your interested in. Then I suggest just firing some emails cold to the supervisor. You might get a bite, or at least a referral.
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Forum rules state you must show some of your own work before we will help you.
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