Classify each of the following reactions as addition,...

Classify each of the following reactions as addition, elimination, substitution or rearrangement a) CH3Br + KOH -> CH3OH + KBr b) CH3CH2Br -> H2C=CH2 + HBr c) H2C=CH2 + H2 -> CH3CH3 d) CH3CH2Br + NaCN -> CH3CH2CN (+ NaBr) e) Cyclohexanol --Acid catalyst--> Cyclohexene (+ H2O) f) Cyclohexane + O2N-NO2 --Light--> Nitrocyclohexane (+ HNO2) II. Which of the following are likely to behave as electrophiles and which as nucleophiles? (a) Cl- (b) N(CH3)3 (c) Hg2+ (d) CH3S- (e) CH3+

Transcript

00:01 So, in this question we have given some reaction and we need to find out the type of the reaction.

00:09 So first we have that is ch3 br plus k -o -h which produced ch3 -o -h plus kbr.

00:24 So here we can see that this br group, it is replaced by this oh group.

00:31 So thus this reaction it is the substitution reaction.

00:38 In substitution reaction an atom or group of atom it is replaced by the another group or atoms.

00:50 So this is the substitution reaction.

00:53 Second we have as c .h3, c .h2 br plus h2c double bond ch2.

01:06 It will produce this plus hbr.

01:14 Here you can see that that br is replaced.

01:19 That means we can say hbr it is replaced here and from this molecule.

01:25 One hydrogen and one bromine atom it is replaced and forms an elkin product.

01:30 This is an alken.

01:32 So this is this reaction is elimination reaction.

01:44 So in this elimination reaction when the elements present in the starting material are lost and the pi bond is formed in the product.

01:52 So that is that reaction is called as the elimination reaction.

01:58 Next we have ch2 double bond ch2 plus hydrogen it is there and this form ch3, ch3.

02:12 So here you can see that this two hydrogen molecule it got attached.

02:16 With these or it got add here so when all the atoms or all the elements are added to the starting material and that kind of reaction is called as the addition reaction addition reaction because hydrogen adds to the double bond and it forms a alkan here this is the alkan next we have that is c h2 c h2 c h2 2 br plus nacn and it is producing ch3, ch2, cn it is plus nabr.

03:05 Again here you can see that this br and cn they are substitute the ch substitute this br.

03:12 So therefore this is the substitution reaction.

03:21 Now next we have that is one bengen ring it is a there it is given and oh group it is present and on introducing the asset catalyst is there it produce this cyclic ring with double bond plus h2o it is removed now as we have just discussed that this oh group it is removed here and here this elkin product is formed so this is nothing but an elimination reaction elimination reaction.

04:07 Next we have that is the cyclic ring is there plus o2n, n -o -2 it is there in the presence of light it produced.

04:27 Now as you can see here in the product this no2 group is got attached there or we can say it is added to this ring.

04:36 So therefore this reaction is addition reaction...

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