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Topic: Potential pathways/ reagents to carry out this terpene conversion  (Read 2002 times)

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Offline curiouscat

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Is there a viable way to get from this starting molecule to Carvacrol? I'm seeing a reference in an internal report but no links to references etc. I want to figure out if someone just was lazy to reference his sources / reactions. Or whether this is implausible.

I searched the standard sources and can find no reference to this conversion. Even structurally it seems alien as to what reaction this could be.



Even if not a direct, single step, that's OK. I just don't spot any viable route.

Any tips? Just brainstorming at the moment.

Offline sjb

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Re: Potential pathways/ reagents to carry out this terpene conversion
« Reply #1 on: July 19, 2017, 08:54:47 AM »
Ideas - dehydration of the tertiary alcohol plus aromatisation.

Offline clarkstill

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Re: Potential pathways/ reagents to carry out this terpene conversion
« Reply #2 on: July 19, 2017, 09:17:14 AM »
No hits for this on scifinder. Overall it would be an oxidation - i think you can (on paper, also not on scifinder!) get to the non-phenol CC1=CC=C(C(C)C)C=C1 by normal E1 type elimination reactions plus a bit of moving stuff around. I guess either the authors have done some undisclosed oxidative reactions on this, or they just guessed/made it up. Is there any context that might help?

Offline curiouscat

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Re: Potential pathways/ reagents to carry out this terpene conversion
« Reply #3 on: July 19, 2017, 10:18:06 AM »
Ideas - dehydration of the tertiary alcohol plus aromatisation.

Thanks!  Could be. Through some indirect deduction I have a hunch H2SO4 was the reagent involved.

Worth a shot?

Any other suggestions for hot to aromatize this?

Offline curiouscat

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Re: Potential pathways/ reagents to carry out this terpene conversion
« Reply #4 on: July 19, 2017, 10:21:33 AM »
Is there any context that might help?

Thanks @clarkstill.

The wider context is a process that starts from this precursor and synthesize Carvavrol.


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