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.Otsuki, Toshihiro; Kakimoto, Masaaki; Imai, Yoshio researched the compound: 4-Methyl-1-phenyl-2,3-dihydro-1H-phosphole 1-oxide( cas:707-61-9 ).Name: 4-Methyl-1-phenyl-2,3-dihydro-1H-phosphole 1-oxide.They published the article 《Synthesis and properties of multiblock copolymers based on polyoxyethylene and polyamides by diisocyanate method》 about this compound( cas:707-61-9 ) in Journal of Applied Polymer Science. Keywords: polyoxyethylene polyamide multiblock copolymer; block polymerization polyoxyethylenedicarboxylic acid MDI diacid. We’ll tell you more about this compound (cas:707-61-9).
Polyoxyethylene-polyamide multiblock copolymers were successfully synthesized from α,ω-poly(oxyethylene)dicarboxylic acid (I), a mixture of two dicarboxylic acids, and an aromatic diisocyanate by 2 synthetic routes, i.e., one-step and two-step methods. In the two-step method, α,ω-diisocyanate-terminated polyamide oligomers, preformed from a mixture of isophthalic acid (II) and azelaic acid (III) with 4,4′-MDI, were reacted with I to form multiblock copolymers. In the one-step method, the reaction components, MDI, II, III, and I, were reacted all together. These polymerizations were carried out in the presence of 3-methyl-1-phenyl-2-phospholene 1-oxide as a catalyst in tetramethylene sulfone, giving multiblock copolymers with inherent viscosities of 0.5-1.1 dL/g. The copolymers were soluble in amide-type solvents, and transparent, ductile, and elastomeric films could be cast from their N,N-dimethylacetamide solutions The tensile strength and modulus of the films thus prepared decreased with an increase in the polyoxyethylene content, whereas the elongation at break increased. The tensile strength, elongation at break, and tensile modulus of the multiblock copolymer films ranged from 47 MPa, 160%, and 1.1 GPa, resp., to 15 MPa, 880%, and 12 MPa, resp.
In some applications, this compound(707-61-9)Name: 4-Methyl-1-phenyl-2,3-dihydro-1H-phosphole 1-oxide is unique.If you want to know more details about this compound, you can contact with the author or consult more relevant literature.
Reference:
1,3-Benzodioxole – Wikipedia,
Dioxole | C3H4O2 – PubChem