addition 3- - RC=C : 3 RC=C : of : CH Oxygen 3 CH exceptions t 0 I H 0 I . - - - - citz (3 !H equilibrium * i formolldenyc - dr P 1,1 - - H H20 + example RC=C : O -H- H20 + Oxygen mechanism favoring carbonyls : H-Y-H are oxigennun ⑦ H i ROH nucleophiles hydrate H nuc R" -(Ec : H R-CE) : 0 + - cnuval hydran alkyyl add to / + xi union carbonyl - * -j = - Addition of i Alcohol -addingon Rotatives ne hemiacetal : contains - - in CAgC-CA aldehyde +CH3CHH all " B - Ec : I 3 C-R ↳ on C as - R same carbor hemiacetal ace I rasmi Minee o CHg-p-CH , OCH = (H3 I I uses _* making + I oH3-OR/-OAr acidorb =0 on cus ea O 11 8 + OH - - H203 -o met B: reduction - nucleophil acid or · Catalytic - cycnonyarerotonated avere gives CH N of alconol - : from H-IN OU attack = dehydration s to carbonyl HzU+ Carbonyl i ! tI & ~ -- i Ol cyanohydrin * H-CEN value acid catalyzed - E -> CN CEN . carbored on H20 cyano hydrin H + J - · acid : carbonyl group with of eithe base or acid ACID CHz-c-cis O Bi + ROG [this no reversible is 'itz (* I x -HR CHy-Y-CH O CHz-8CHe + D I CHECH2O8 · ↳attac Erborn : - carba + bet hemiacetalH & CH , using protanated base or BH + ace+al -CHg - + B: - OR gene 3) proton sone, from six HGR oxonium A : > - gives hemialetal ion to A O bi He en olt transfer + A- ou HOR- olt , H : . - reversibie - t + R oxygen is i) a ⑦ : to carbonyl proton transfer It i + HA