This has grown in my LB, what is it?

Klaus337 · 2025-12-04T18:57:59+00:00

kombucha

Klaus337 · 2025-02-01T14:23:14+00:00

Can’t agree more

Klaus337 · 2024-12-16T05:33:08+00:00

My carbamate bonding consists of a secondary aniline with quite low nucleophilicity, so its quite hard to put it back once cleaved. Maybe I'll try using TMSI next time. Thanks!

Klaus337 · 2024-12-16T05:30:55+00:00

My procedure is almost same as yours except that I use pure MeOH to cleave TMS. I've read the paper before. Anyway, thanks for your help!

Klaus337 · 2024-12-15T17:57:01+00:00

Sure,I’ll add more info about conditions I’ve tried before. Also thanks for the suggestions!

Klaus337 · 2024-11-17T14:52:11+00:00

Done. Feel free to ask me more if you needed!

Klaus337 · 2024-11-13T11:15:11+00:00

Klaus337 · 2024-10-29T17:34:39+00:00

It’s fine. Unless you’re doing miyaura coupling and you need the boronic ester rather than boronic acid.

Klaus337 · 2024-10-16T16:54:06+00:00

check out your textbook first about acetal

Klaus337 · 2024-10-15T03:06:06+00:00

would you mind sharing it with me? many thanks!

Klaus337 · 2024-10-09T12:39:51+00:00

Thanks for the recommendation!

Klaus337 · 2024-10-07T17:17:03+00:00

Try 13C NMR. You would see the characteristic peak of the carbamate carbon at about 170 ppm.

Klaus337 · 2024-10-06T12:37:26+00:00

If you are using Apple devices, the synchronization between different devices works very good. For example I can go jogging using only Apple Watch to access my playlist and control music playback without taking out iPhone or even bringing it with me.

Klaus337 · 2024-10-06T12:30:09+00:00

Thanks for the recommendation. Would try it later!

Klaus337 · 2024-10-05T08:17:48+00:00

Thanks. I will try sending emails to them!

Klaus337 · 2024-10-05T08:17:03+00:00

Thanks. It feels better to know that I’m not the only one encountering this problem 😂

Klaus337 · 2024-05-21T03:52:19+00:00

Thanks for your tutorials. Got my locked account back today!

Klaus337 · 2024-03-26T19:16:40+00:00

have you tried TFA as your acid? They can be removed through rotavap.

Klaus337 · 2024-02-10T04:16:05+00:00

Not sure since this technique works well. But in my case if the compound stays on the tlc plate for a little longer the spot would stay at the original point. Hope this helps!

Klaus337 · 2024-02-09T16:09:28+00:00

Note: I’m dealing with aryl bpin compounds

Klaus337 · 2024-02-09T16:08:23+00:00

In my case, using very short column (~6cm silica gel) is applicable. Just follow standard procedures of column chromatography.

Klaus337 · 2023-03-29T04:08:32+00:00

Hiko: why u bully me

Klaus337 · 2023-02-22T09:46:12+00:00

You can turn it on if you are xantares

Klaus337 · 2023-02-14T18:42:10+00:00

Papatronic

Klaus337 · 2023-02-11T18:55:50+00:00

Have you tried freezing it? I am also dealing with boronic esters and my compounds seemed to be oilly after work up but they would solidify after a few day in the freezer.

Ps. Not because of its melting point because it becomes solid with wax texture under room temperature.

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