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Organic Chemistry

Cool goIITian

Joined:	12 Jul 2009
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19 Mar 2010 14:36:25 IST

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what are stereospecific rxn`s?

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what are stereospecific rxn`s?

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winx

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Joined: 28 Jan 2010

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19 Mar 2010 14:48:24 IST

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stereospecificity is the property of a chemical reaction that yields different stereoisomeric reaction products from two stereoisomeric reactants depending on the reaction conditions.

stereospecificity describes a reaction that necessarily yields a given stereoisomer because of the mechanism of the reaction

Stereospecificity always yields 100% of a particular stereoisomer

The stereoisomers that result are molecules whose connectivity is the same but their atomic arrangement are different in space

As an example-----------> the addition of dibromocarbene to cis-2-butene yields cis-2,3-dimethyl-1,1-dibromocyclopropane whereas addition of dibromocarbene to the trans isomer exclusively yields the trans cyclopropane.

Sagar Saxena

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Joined: 8 Oct 2008

Posts: 6343

19 Mar 2010 15:03:38 IST

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hiii

stereo specific reactions are One in which one or more reactants or catalysts cause a reaction to take place at specific conformational sites, thus leading to a preferred spatial geometry of the reaction product. Syndiotactic polymers are a result of stereospecific polymerization !!!!

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