Dr Mehta has devised novel and ingenious methods for the synthesis of complex terpenoids. He has been successful in synthesising highly strained polycyclic molecules such as bird-cage compounds, cubanes and homocubanes, pentaprismane and Dewar benzene using unusual electrophilic and photochemical reactions. He has unraveled many new and fascinating molecular reorganisations of isoprenoids and strained polycyclic systems. He has also successfully introduced new reagents for dehydrohalogenation.