Question

40. Give the major organic product of each reaction, paying attention to stereochemistry. Indicate if a racemic mixture is expected. excess H excess H Pe cat Pd cat. excess H a d Pd cat. 41. Structures A-C are isomers of CH4 Propose a possible structure for A-C that fits each of the observations below. 1. il. ill. Structure A reacts with 2 moles of H2 (w/ Pd catalyst). Structure B reacts with 1 mole of H2 (w/ Pd catalyst). Structure C does not react with H2/Pd.

Answer 1

This is a catalytic hydrogenation, the reaction in which hydrogen will added to double or triple bond in syn way in presence of catalyst like Ni,Pd.Pt etc to give satarated hydrocarbon s Excess H2 Pd catalyst Here, we have excess amount of dihydrogen So.it will added to two double bond III Pt cat ebe Yes Pt cat Deutirium will also add the same fashion as we added like H D2 Pd Cat 3 80 bero Excessn H Benzene ring will not reduce by catalytic hydrogentation. It will reduce at high pressure and high temperature. Pd cat Excessn H Pd cat Here, it first reduce to alkene then it will reduce to alkane D2 Pt cat D D2 Pd Cat SH SH