Identify the products in the following reactions giving their stereoisomers ( if any ) . a. (B) overset(H_(2)+Pt)rarrC ( No. of isomers ) b. (B)(from Problem A) overset(Baeyer's)underset(reag e nt)rarr (D)+(E)( Colour of precipitate) c. (B) overset(PhCO_(3)H)underset (+H_(2)o)rarr(D) d.(A)underset(Na+liq. ND_(3)+EtOH)rarr(F) overset(Alk. KMnO_(4))underset(OSO_(4)//NaHSO_(3) or PhCO_(3)H//H_(2)O)rarr(D)

Identify the products in the following reactions giving their stereois

1.	Identify the products in the following reactions giving their stereoisomers ( if any ) . a. (B) overset(H_(2)+Pt)rarrC ( No. of isomers ) b. (B)(from Problem A) overset(Baeyer's)underset(reag e nt)rarr (D)+(E)( Colour of precipitate) c. (B) overset(PhCO_(3)H)underset (+H_(2)o)rarr(D) d.(A)underset(Na+liq. ND_(3)+EtOH)rarr(F) overset(Alk. KMnO_(4))underset(OSO_(4)//NaHSO_(3) or PhCO_(3)H//H_(2)O)rarr(D)
Answer» Solution :`a.` `(B)` is a cis compouind and the addition of `H_(2)+Pt` isalso syn. But `(B)` has two different `(R)` groups`(Me` and `Et)` , so the product `(C)` will not be meso but a racemic compound. Since `(C)`contains two chiral CENTRES, the number of OPTICAL isomers will be `2^(2)=4(` two pairs of entantiomers `).` These are `:` `I` and `II,III` and `IVimplies ` Pairs of enentiomers `(I, III), (I,IV),(II,IV)` and `(II,IV)implies ` Pairs of diastereomers. `b.` c.`UNDERSET("R groups")underset("with two different")underset("cis-Compound")((B))overset(PhCO_(3)H+H_(2)O)underset("Anti-hydroxylation")rarr(D)` [As in (b)] d.