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Topic: Detaile mechanisms for reactions  (Read 4561 times)

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Maple

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Detaile mechanisms for reactions
« on: April 29, 2004, 09:09:48 AM »
1. Propose a detailed mechanism for the reaction of propene with aqueous bromine and provide the IUPAC names of the resulting product(S)?

2. Propose a detailed mechanism for the reaction of propane with chlorine in the presence of light. Discuss in detail why a secondary alkyl halide predominates?

Thanx again!  ;)

« Last Edit: April 29, 2004, 09:11:59 AM by Maple »

Offline Mitch

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Re:Detaile mechanisms for reactions
« Reply #1 on: April 29, 2004, 11:44:36 AM »
1.) 2 bromine atoms get added to prropene to make a dibromopropane. can you name it?
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Maple

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Re:Detaile mechanisms for reactions
« Reply #2 on: April 29, 2004, 01:21:46 PM »
Nope, I can't... Busy studying through correspondence and Sooooo confused! Not sure what you looking for... Name of? :-[

Offline Mitch

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Re:Detaile mechanisms for reactions
« Reply #3 on: April 29, 2004, 02:27:09 PM »
1.) The first step in the mechanism involves a 3 membered ring(involveing 2 carbons that had the double bong and a bromine), the next step involves attack by Br-,
« Last Edit: April 30, 2004, 02:22:05 AM by Mitch »
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Offline AWK

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Re:Detaile mechanisms for reactions
« Reply #4 on: April 30, 2004, 01:21:35 AM »
1. This is electrophilic addition. Bromine cation attact duble bond enabling attact of bromine anion with simultanous moving of bromine cation to C1. 1,2-dibromobutane is formed.
2. This is radical substitution. Light produce chlorine radicals which can remove hydrogen radical from any carbon. Since radicals at secondary or tertiary at C atoms are more stable so
2-chloropropane predominates as final product.
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Offline ximik

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Re: Detaile mechanisms for reactions
« Reply #5 on: July 03, 2006, 04:42:16 AM »
1. the  product is 2-bromo-propanol-1.
it is obtained by attack of the 3-membered cyclic cation

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