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Topic: Synthetic Local Anesthesics  (Read 5648 times)

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Offline lutesium

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Synthetic Local Anesthesics
« on: April 29, 2008, 08:44:53 AM »
Dear Sir Ma'am

How can I attach a picture in here?


How can this conversion be made? By the grignard addition of BrMgCN to the ketone group? (How can a ketone's oxygen be turned into an -OH and -CN bond?

Online Borek

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Re: Synthetic Local Anesthesics
« Reply #1 on: April 29, 2008, 08:58:15 AM »
How can I attach a picture in here?

Click on Additional Options... below edit field.
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Offline sjb

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Re: Synthetic Local Anesthesics
« Reply #2 on: April 29, 2008, 09:38:37 AM »
Consider the polarity of the carbonyl bond, and that of the cyanide ion, together with the Lewis structure for the latter. Does making a grignard of the cyanide ion make formal sense?

Offline lutesium

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Re: Synthetic Local Anesthesics
« Reply #3 on: April 29, 2008, 08:57:12 PM »
Where is that edit field?

For sjb:
I'm just asking how they've made this reaction. Does a ketone and a cyanide ion upon making Grignard give a hydroxyl and a nitrile?


Lutesium...

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Re: Synthetic Local Anesthesics
« Reply #4 on: April 30, 2008, 02:38:40 AM »
Where is that edit field?

Place where you type your message. You know, like a white box right in the middle of your screen ;)
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Offline lutesium

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Re: Synthetic Local Anesthesics
« Reply #5 on: May 01, 2008, 12:55:48 PM »
How can this conversion be made?


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Offline lutesium

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Re: Synthetic Local Anesthesics
« Reply #6 on: May 02, 2008, 02:16:27 PM »
I suppose to make a Grignard Reaction between the Piperidone and Br-Mg-CN. Is this way suitable for the reaction scheme?


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Offline lutesium

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Re: Synthetic Local Anesthesics
« Reply #7 on: May 04, 2008, 06:25:05 AM »
Is there anyone who can help me?


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Offline sjb

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Re: Synthetic Local Anesthesics
« Reply #8 on: May 07, 2008, 02:19:26 PM »
You don't need to make the Grignard, as cyanide is already negatively charged. However, the formation may be reversible, so be careful.

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