Bisphenols containing pendant clickable maleimide group and polymers therefrom

A process for the synthesis of compound of Formula I

• wherein, x is an integer selected from 0 to 10
• comprising the steps of:
• a. stirring the reaction mixture comprising alkylenediamine and phenolphthalein in the molar ratio ranging between 10:1 to 20:1 for period in the range of 45 to 55 h at temperature in the range of 100 to 150° C. to afford phenolphthalein N-(aminoalkyl)lactam;
• and
• b. stirring the reaction mixture comprising phenolphthalein N-(aminoalkyl)lactam as obtained in step (a), maleic anhydride and glacial acetic acid for period in the range of 10 to 15 h at temperature in the range of 100 to 120° C. to afford compound of Formula I.

A process for the synthesis of polyesters of formula II,

• wherein;
• x is selected from 0 to 10 and Ar is selected from
• or mixture thereof, wherein the process comprising the steps of:
• a) adding a solution of isophthaloyl chloride in dichloromethane to a compound of Formula I
• wherein, x is an integer selected from 0 to 10 in dichloromethane in the presence of triethylamine and maintaining the reaction temperature at 0 to 10° C.;
• and
• b) stirring the reaction mixture of step (a) for period in the range of 20 to 30 min to get desired aromatic polyester of Formula (II).