20 - Organic Chemistry Questions Answers

What products will be formed and why? Why would EtMgBr attack on a particular side of cyclic ester?
Asked By: LUFFY
is this question helpfull: 0 0 submit your answer
Joshi sir comment

Why does

Zn + HCl reduce aldehydes and ketones to alcohols while

Zn - Hg amalgam + HCl reduce aldehyde and ketones to alkanes

Asked By: LUFFY
is this question helpfull: 0 0 submit your answer
Joshi sir comment

 H₂+ Pd + C  Reagent ... It reduces a C=C to C-C ... Is this addition syn or anti?

Asked By: LUFFY
is this question helpfull: 0 0 submit your answer
Joshi sir comment

It is syn reagent

It is m-CPBA
Asked By: LUFFY
is this question helpfull: 0 0 submit your answer
Joshi sir comment

mCPBA is a good oxidizing agent for alkenes and ketones. Here both are present, in that case mCPBA attacks on alkene. Alkene on OMe side is more reactive. So make epoxide this side. Remember also that stereo nature is not changed in this reaction means cis be cis and trans be trans. 

Is the H on B-carbon sterically hindered ?

Asked By: LUFFY
is this question helpfull: 0 0 submit your answer
Joshi sir comment

Steric hindrance is a relative word, so is compared between two carbons.

Tertiary carbon is always more sterically hindered than primary,

so β carbon is more hindered than α in this compound

In 1 and 2 ... are the two isomers geometrical iso or optical iso?
Asked By: LUFFY
is this question helpfull: 0 0 submit your answer
Joshi sir comment

1. It is cis-trans pair (no chiral carbon atom so no optical isomerism)

2. has chiral carbon atom so case of optical isomerism, mirror images so dextro and laevo

CH3-(CHBr)-CH2-CH3   +  Na  --------> ?

 

 

Asked By: AAYUSH TANEJA
is this question helpfull: 4 2 submit your answer
Joshi sir comment

in presence of ether it is Wurtz reaction and as obvious many products will be formed.

Major product will be CH3-CH2-CH(CH3)-CH(CH3)-CH2-CH3

Arrange The Following in increasing order of reactivity towards nucleophilic substitution and give reason :

CH3F , CH3Cl , CH3Br , CH3I  .

 

Asked By: AAYUSH TANEJA
is this question helpfull: 4 0 submit your answer
Joshi sir comment
Better the leaving group the compound contains, more reactive the compound will be 
towards the nucleophilic sustitution.
Order of decreasing reactivity. 
 
CH3I > CH3Br > CH3Cl > CH3
 

Arrange The Following in increasing order of dipole moment and give reason :

Dichloromethane , chloroform , carbon tetrachloride .

Asked By: AAYUSH TANEJA
is this question helpfull: 2 0 submit your answer
Joshi sir comment

Dichloromethane > chloroform > carbon tetrachloride 

HOW TO COMPARE FOR HEAT OF COMBUSTION ? WHAT MOST BE STRATERGY TO DECIDE WHICH COMPOUD HAVE MORE EAT OF COMBUTION

Asked By: SIDDHANT
is this question helpfull: 3 2 read solutions ( 1 ) | submit your answer
Joshi sir comment

For this it is necessary to remember all the bond energies

Login Here

Username / Email :

Password :

Register | Forget Password