an introduction to organic reactions and their mechanisms(acids and bases)

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powerpoint 프레젠테이션 college of medicine an introduction to organic reactions and their mechanisms(acids and bases) saturated compounds such as alkanes and alkyl halides and of aromatic compounds (unsaturated). in a substitution, one group replaces another. additions are characteristic of compounds with multiple bonds. in an addition all parts of the adding reagent appear in the product; two molecules become one eliminations are the opposite of additions. in an elimination one molecule loses the elements of another small molecule. elimination reactions give us a method for preparing compounds with double and triple bonds. in a rearrangement a molecule undergoes a reorganizati on of its constituent parts. college of medicine types of reactions homolysis and heterolysis of covalent bonds college of medicine heterolysis of a bond normally requires that the bond be polarized college of medicine heterolysis of bonds to c: carbocations and carbanions carbocations are electron deficient. they have only six …

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n) lewis acid - accepts an electron pair to form a new bond arrhenius base - forms oh - in h2o bronsted-lowry base - accepts a h + (proton) lewis base - donates an electron pair to form a new bond acid strength defined by pka hcl + h2o h3o + cl keq = [h3o ][cl ] [hcl][h 2o] ka = keq[h2o] = [h3o ][cl ] [hcl] = 10 7 pka = -log(ka) = -7 college of medicine c c o o h h h h pka 4.7 + nahco3 h h h c o o c h h h c o o c h2co3 + na h h h c c o o − − resonance hybrid na resonance stabilization college of medicine the effect of resonance on pka college of medicine college of medicine strength of acid and base college of medicine acidity and basicity lewis base = …

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h h c c o h h h c b) + c) o h h n + li o li + n h ch3 c o c h h o h hh c o c h h h ch3 + h2o hk k + h2 college of medicine practice example of an organic reaction mechanism college of medicine college of medicine example of an organic reaction mechanism

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powerpoint 프레젠테이션 college of medicine an introduction to organic reactions and their mechanisms(acids and bases) saturated compounds such as alkanes and alkyl halides and of aromatic compounds (unsaturated). in a substitution, one group replaces another. additions are characteristic of compounds with multiple bonds. in an addition all parts of the adding reagent appear in the product; two molecules become one eliminations are the opposite of additions. in an elimination one molecule loses the elements of another small molecule. elimination reactions give us a method for preparing compounds with double and triple bonds. in a rearrangement a molecule undergoes a reorganizati on of its constituent parts. college of medicine types of reactions homolysis and heterolysis of covalent bonds colleg...

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