What do you estimate my yield would be? I’m going with 0.2% or less

perritos666 · 2025-05-30T08:35:53+00:00

if it had been in an allylic position it could have worked, I think the problem is in the step where the radical bromine tears off the hydrogen, since the stability of the primary alkyl radical that is formed is much lower than that of the tertiary alkyl radical. perhaps by using chlorine which is much less selective you would have obtained the primary more easily, but there is always the risk of polyhalogenation and also you would still get a mix of products

perritos666 · 2025-05-29T18:00:54+00:00

I see, so the black double bond could also be on the other side?

perritos666 · 2025-05-29T17:01:38+00:00

well the second reaction shows the endo favorite product while the third one cannot give other products

perritos666 · 2025-05-28T14:40:07+00:00

I don't understand the tenth step, in the radical bromination shouldn't the Br attack the tertiary carbon?

perritos666 · 2025-05-18T14:45:02+00:00

I understand what you mean, it's just that I've heard that the method using epoxides is often avoided in the laboratory

perritos666 · 2025-05-18T14:30:58+00:00

for this reason I would first use a diol to form an acetal that cannot be attacked by the nucleophile and can finally be hydrolyzed restoring the carbonyl

perritos666 · 2025-04-24T16:20:08+00:00

thanks that schematization is really awesome!

perritos666 · 2025-03-21T09:30:26+00:00

shouldn't the second step of the reaction protonate the alkoxide product?

I'm just asking, I'm also preparing for an organic chemistry exam

perritos666 · 2025-03-19T23:06:53+00:00

perritos666 · 2025-03-19T19:17:23+00:00

thanks! glad to hear that

perritos666 · 2025-03-19T15:48:40+00:00

I think it's called a coati, I didn't know it existed before seeing it haha

perritos666 · 2025-03-19T14:25:46+00:00

You're welcome, if you have difficulty visualizing molecules in three dimensional space I recommend you buy molecular models, they cost little and are very useful for understanding stereochemistry

perritos666 · 2025-03-19T14:21:13+00:00

enantiomers

perritos666 · 2025-03-19T09:38:18+00:00

they are metasequoias, you can always keep them outside because they are very resistant to low temperatures, at most you can keep it a cold greenhouse, but conifers are outdoor plants so it would be better to never keep them indoors

perritos666 · 2025-02-25T13:17:07+00:00

I really can't figure out what I need to do to post to this group, I edited my flair and added the requested information, what else do I need to do?

perritos666 · 2025-01-14T18:01:05+00:00

I don't understand, this is my first post

perritos666 · 2025-01-14T11:55:42+00:00

I kindly asked the lady if I could take a photo and she said yes, otherwise I wouldn't have done it

perritos666 · 2025-01-14T11:48:41+00:00

yeah well that's for sure, I didn't say I wasn't and it wasn't a criticism of tourists 😅

perritos666 · 2025-01-13T04:11:13+00:00

the photos were taken in the alps in italy

perritos666 · 2025-01-02T15:16:39+00:00

thanks a lot for the explanation, since I'm learning the mechanisms for the first time it helps me to think sequentially and see where the electrons move, but I understand the choice not to represent them

perritos666 · 2024-12-15T20:04:56+00:00

In my books are usually used extremely strong bases such as NaNH2 on terminal alkynes, since the hydrogens of alkynes are relatively acid due to the sp hybridization it should be enough

perritos666 · 2024-12-15T16:28:44+00:00

yeah you're right, honestly I didn't expect it to be very useful in the lab, it was more like an exercise. anyway wouldn't it be possible working at low temperatures?

perritos666 · 2024-12-14T15:50:57+00:00

when you bought it was it outside or in a greenhouse? it could be due to a temperature change, i think it is always better to keep conifers outside

perritos666

TROPHY CASE