Question

For each of the following reactions, show all possible product(s) of the reaction, and present a stepwise mechanism using the curved arrow notation. excess HBr H2C-CECH HO, H2SO4 HBr

Answer 1

All these reactions are goes through the Markonikov addition and in all the case the more stable carbonation gives the major product.
eacess C42-CCH CH3 Cani belakion B p Caty-e (ezcess) stabe more SwastituEd Conm bo ution CH3 requeied Tms is tHhe 내3 CH 3 poroduct Byy H20, Ha S04 2 CH3-LC-H3 C-CEC-CH CH3-CIC -Ht 0 H keto-enol tomtomening CH2-Ct3 C3 tH+ This is the rgeired predut

2 HIBR fr Thi's is the majoa Lees Starble Minora product as produet Carbo cotion the mere Steble 2 Carebo cation