ORGANIC CHEMISTRY Chapter 6 6.12 Carbocations Department of Chemistry, Xiamen University
ORGANIC CHEMISTRY Department of Chemistry, Xiamen University Chapter 6 6.12 Carbocations
ORGANIC CHEMISTRY Chapter 6 6. 12a The Structure of carbocation o The structure of carbocation is trigonal planar g The center carbon atom in a carbocation is electron deficient o The p orbital contains no electrons H3CILC-CH3 HC Department of Chemistry, Xiamen University
ORGANIC CHEMISTRY Department of Chemistry, Xiamen University Chapter 6 6.12A The Structure of Carbocation The structure of carbocation is trigonal planar. The center carbon atom in a carbocation is electron deficient. The p orbital contains no electrons. C CH3 H3C H3C
ORGANIC CHEMISTRY Chapter 6 6. 12B The relative Stabilities of Carbocations ( CH3)3C +>(CH3)2 CH >CH3 CH2>CH CH=CH-CH 3°>2°>1°> methyl o The relative stabilities of carbocations are related to the number of alkyl groups attached to the positively charged trivalent carbon atom o a charged system is stabilized when the charge is dispersed or localize d The delocalization of charge and the order of stability of the carbocations parallel the number of attached methyl groups Department of Chemistry, Xiamen University
ORGANIC CHEMISTRY Department of Chemistry, Xiamen University Chapter 6 6.12B The Relative Stabilities of Carbocations CH2 CH CH2 > > > (CH3)3C CH3CH2 CH3 (CH3)2CH 3° >2° >1° >methyl The relative stabilities of carbocations are related to the number of alkyl groups attached to the positively charged trivalent carbon atom. A charged system is stabilized when the charge is dispersed or delocalized. The delocalization of charge and the order of stability of the carbocations parallel the number of attached methyl groups
ORGANIC CHEMISTRY Chapter 6 6.13 The Stereochemistry of SN1 Reaction Department of Chemistry, Xiamen University
ORGANIC CHEMISTRY Department of Chemistry, Xiamen University Chapter 6 6.13 The Stereochemistry of SN1 Reaction
ORGANIC CHEMISTRY Chapter 6 CH CH HrC HO-C →(C◎ C-OH HO OH H3C cH3 H2C CH CH
ORGANIC CHEMISTRY Department of Chemistry, Xiamen University Chapter 6 C CH3 H3C CH3 OH C H3C H3C CH3 OH C CH3 CH3 CH3 HO HO