20913-05-7
(Phenylcarbonylmethylene)triphenylphosphorane
+
2570-01-6
2-cyclopropen-1-thione,2,3-diphenyl-
→
~85%
14963-56-5
3,4,6-triphenylpyran-2-thione
603-35-0
三苯基膦
14961-31-0
2H-吡喃-2-酮, 3,4,6-三苯基-