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andselisk
andselisk
5:39 AM
@Martin-γƒžγƒΌγƒγƒ³ Ahh, that wasn't targeted at you, I just felt an urge to rant:( That blog post isn't the shiniest, but at least it raises a concern.
 
 
3 hours later…
Rajorshi Koyal
Rajorshi Koyal
9:01 AM
@NikeDattani What is meant by tech enabled banking experience?
 
 
5 hours later…
Nike Dattani
Nike Dattani
1:47 PM
@RajorshiKoyal why are you tagging me? It's been a while since I posted here
 
Rajorshi Koyal
Rajorshi Koyal
@NikeDattani Actually I had another account on Matter Modelling
While we spoke as user...
 
Nike Dattani
Nike Dattani
I see
 
Rajorshi Koyal
Rajorshi Koyal
YOu told me to post questions in the main site if you remember
We began the site from ground 0
 
Nike Dattani
Nike Dattani
Yes!
 
Rajorshi Koyal
Rajorshi Koyal
Now I seek some hlep about some economic topics in the news
Particularly for some exam prepapration
Can you assist me slightly with this sir?
 
Nike Dattani
Nike Dattani
1:50 PM
Did you try the personal Finance Stack Exchange, or the Economics one?
 
Rajorshi Koyal
Rajorshi Koyal
I did but I am preparing for a very compeptitive exam and it requires
Some mentoring
Can you afford some guidance and help?
@NikeDattani Are you there?
 
Nike Dattani
Nike Dattani
2:10 PM
@RajorshiKoyal it's 10am here and I'm unavailable to help you prepare for exams right now. Hopefully you find someone in your time zone, but I highly recommend you ask on Finance SE or Economics SE if this is about banking.
 
Rajorshi Koyal
Rajorshi Koyal
Generally when are you free to speak.I am sorry for disturbing you.
 
Hot nitric acid (HNQ)
Hot nitric acid (HNQ)
3:06 PM
6
Q: Synthesis of (1S,2S,4S)-4-ethenyl-5-methylcyclohexane-1,2-diol

RehearseI'm trying to devise a synthesis for the following question. I am aware it involves retrosynthetic, Wittig, Grignard and diels alder reactions, but unfortunately I can't really grasp all concepts which make me stuck. If there's any help or further explanation would be great. I have tried to do r...

organic-chemistry synthesis carbonyl-compounds grignard-reagent wittig-reactions
 
 
5 hours later…
Faded Giant
Faded Giant
8:01 PM
6
Q: How to safely handle AVGAS (100LL)?

MD88FanObviously 100LL is risky. It's got lead in it, so there's going to be some danger. But is it possible to not get lead into my system when I start flying? It is, for obvious reasons, something I wish to avoid. I want to learn to fly, but after reading the SDS for 100LL, I'm pretty worried. Here ar...

safety fuel medical avgas
@andselisk and especially if you place units in square brackets (like these examples do), you are doing it wrong.
 
Buttonwood
Buttonwood
8:19 PM
@Waylander About your comment here
6
A: Synthesis of (1S,2S,4S)-4-ethenyl-5-methylcyclohexane-1,2-diol

ButtonwoodBecause the target structure contains the motif of a cyclohexane-1,2-diol, I suggest an approach including a Diels-Alder reaction (DA in the illustration below) of 1,3-butadiene and the commercially available diethyl acetal of propargyl aldehyde: The hydrolysis of the acetal then sets the stage ...

if a reprotetction of the aldehyde during the Prévost reaction were necessary.
Source for this is
«Strategic Applications of Named Reactions in Organic Synthesis», László Kürti and Barbara Czakó, Elsevier (2005), ISBN: 0-12-429785-4, p. 361. The authors dedicate two pages for each reaction selected (there are 250). The even pages present the background and mechanism of the reaction, the odd pages are about showcases / applications of the reaction in question.
So in this example, primary and secondary alcohol stay intact.
The other three examples don't exhibit a free alcohol or aldehyde group. Thus, based on one experience of mine that an aldehyde passed faster away than anticipated, and because of the oxidation C=C double bound -> diol I thought the protection would be useful.
 

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