So far, in addition to halogen atoms, other non-metallic atoms can become part of the aromatic heterocycle, and the target ring system is still aromatic.Alberino, L. M.; Farrissey, W. J.; Sayigh, A. A. R. researched the compound: 4-Methyl-1-phenyl-2,3-dihydro-1H-phosphole 1-oxide( cas:707-61-9 ).Safety of 4-Methyl-1-phenyl-2,3-dihydro-1H-phosphole 1-oxide.They published the article 《Preparation and properties of carbodiimide oligomers》 about this compound( cas:707-61-9 ) in Polymer Preprints (American Chemical Society, Division of Polymer Chemistry). Keywords: carbodiimide oligomer preparation property; phospholene oxide polymerization catalyst; polycarbodiimide oligomer. We’ll tell you more about this compound (cas:707-61-9).
Polycarbodiimides of limited mol. weight were prepared by reacting a difunctional isocyanate, e.g. 4,4′-diisocyanatodiphenylmethane, with a monofunctional isocyanate, e.g. phenyl isocyanate, as terminating agent in the presence of 1-phenyl-3-methyl-2-phospholene-1-oxide [707-61-9] catalyst to give a carbodiimide oligomer [33970-08-0] and CO2. The polymer chains were terminated with end-groups which were equal in thermal stability to the backbone of the polymer. The polymers prepared in the oligomer range having a ratio of equivalents of difunctional to monofunctional isocyanate (r) of 6/1 to 20/1 had mech. properties very nearly equal to those of high mol. weight unterminated polymers. The terminated polymers had a lower melt viscosity than the unterminated polymers and hence a greater ease of processing.
As far as I know, this compound(707-61-9)Safety of 4-Methyl-1-phenyl-2,3-dihydro-1H-phosphole 1-oxide can be applied in many ways, which is helpful for the development of experiments. Therefore many people are doing relevant researches.
Reference:
1,3-Benzodioxole – Wikipedia,
Dioxole | C3H4O2 – PubChem