In this work five new acetylene dimmers were prepared ( three of them were Homo dimers ) :
1- 1,6-di (thio Benzo thiazol) Hexa 2,4 di(yne) (A) :-
2- 1,6-di(phthalmide) Hexa2,4-diyne (B).
3 - 4 ,5 - di phenyl 3-(2-propanyl) thio -1,2,4 –Triazol (C)
(and the other two were Hetro dimmers ) :
Hetro dimmer - 1- 1-phthalmide-6-thio benzothiazol hexa 2,4 di-yne (AB ). 2 - 1-phthalmide-6-[4,5-di phenyl-3-thio 1,2,4 triazol] hexa- 2,4 diyne (AC)
Using , Oxidative coupling method from the polymerization of three terminal acetylene monomer prepared for this papas via nucleophilic reaction of the type SN2 between Propargyl bromide and the following reagents :
( a) 1 – S- Propargyl thio benzo thiazol
2 - N-Propargyl phathalamide(b), 3 - 4,5di phenyl 3-(2-propy nyl) thio-1,2,4-- triazol(c)
thy were characterized by FT- IR and milting point measurement the results were corresponding with the theoretical Assumption the polymerization were underwent in an atmosphere of Oxygen in basic solution using copper salts (I) as a catalyst |