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Chemistry Forums for Students => Organic Chemistry Forum => Topic started by: Maple on April 29, 2004, 09:09:48 AM

Title: Detaile mechanisms for reactions
Post by: Maple 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!  ;)

Title: Re:Detaile mechanisms for reactions
Post by: Mitch on April 29, 2004, 11:44:36 AM

1.) 2 bromine atoms get added to prropene to make a dibromopropane. can you name it?

Title: Re:Detaile mechanisms for reactions
Post by: Maple 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? :-[

Title: Re:Detaile mechanisms for reactions
Post by: Mitch 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-,

Title: Re:Detaile mechanisms for reactions
Post by: AWK 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.

Title: Re: Detaile mechanisms for reactions
Post by: ximik 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