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Final

CHEM 123 Final: SN1 SN2 reactions
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Department
Chemistry
Course
CHEM 123
Professor
Katherine Ryan
Semester
Winter

Description
SNI Reacrtons Convenhoms and definition n a subs ITuhon teact on ne Part o oup) s substituted tor the new part (nucteophlle) ectrophile accepts cle (trons hu e ophile donat election leavin YOU p tart or th electrophile that replaved n the desired organic pro avit, there is a new bund mechanisms and Kinetic mechanism occurs in a single elementary step eo ctive carbon in the electro pnlle IS the one directly bonded to me leaving group nv Cleopnile appro 0 ches the electro pmile trom tne snac opposite to the leaving group neophile, and ieaving group 3- Ele ctro ph Electrooniles with fewer branches close to the reactive carbon reo more quickly negatively charged nucleophiles react moie qui ddy than neutral nucheophiles Nitnin the Jame row of the periodic table nucleopmiles with less electromegahve nvcleopnili atoms tend to react more quickly sterically bulky nucleophile react less quickly groups that leave weaker bases make better leaving groups Stercochem stny Nncn an SN2 rca otton occurs at asymmetric carbon oD an tne ete (troph the product stereo chemistry is inverted rel aHve to tnc reactant reactive Carbon only inverts at the clcctropnics not distant Stereocen tres SN1 Reactions SNI Rea ctions k tics, and stereoChem (1) eavi occur over two thement any steps 9 group eaves (2). nucleophile adds wnen an reaction occurs at an asymmetric carbon, en the nucteopnllei products with inverted ond retained relatIve StereoChemistiv alt both produced First Step Ileaving group leores rate aetermining Step n 2- Electropni len nucleophile and more jubstitutcd electrochies leavin group they lead to more react more quickly becau je Anionic stable carbocation intermediates rates and neutral nucleophiles react at weaker bases generally make better leaving woups SNI Reacrtons Convenhoms and definition n a subs ITuhon teact on ne Part o oup) s substituted tor the new part (nucteophlle) ectrophile accepts cle (trons hu e ophile donat election leavin YOU p tart or th electrophile that replaved n the desired organic pro avit, there is a new bund mechanisms and Kinetic mechanism occurs in a single elementary step eo ctive carbon in the electro pnlle IS the one directly bonded to me leaving group nv Cleopnile appro 0 ches the electro pmile trom tne snac opposite to the leaving group neophile, and ieaving group 3- Ele ctro ph Electrooniles with fewer branches close to the reactive carbon reo more quickly negatively charged nucleophiles react moie qui ddy than neutral nucheophiles Nitnin the Jame row of the periodic table nucleopmiles with less electromegahve nvcleopnili atoms tend to react more quickly sterically bulky nucleophile react less quickly groups that leave
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