Avoid long term capital gain tax

Hi,

I have two apartments in Bangalore - Both apartment on name of me and my wife, Both co-borrowers.
I am planning to sale one apartment that is not having any loan.By selling this apartment in Bangalore, we will construct house in Pune which will have name of only my wife. During purchase of apartment, all the financial transactions are done using my account only (and no money transfer can be shown using her account.
1. How will I avoid the capital gain tax (house construction in Pune will have name of only my wife)?
2. I don't wish to invest money in bond etc since entire money is required in buiding new house.

Thanks in advance.