Industrially, the main methods for producing nitriles are ammoxidation and hydrocyanation. 31643-49-9, formula is C8H3N3O2, Name is 4-Nitrophthalonitrile. Both routes are green in the sense that they do not generate stoichiometric amounts of salts. Recommanded Product: 4-Nitrophthalonitrile.
Jiang, Hongyu;Jiang, Hanzhou;Chen, Guofei;Fang, Xingzhong research published ã?Synthesis and comparative study on polyetherimides from isomeric 4,4′-isopropylidenediphenoxy bis(phthalic anhydride)sã? the research content is summarized as follows. Two isomers of com. 4,4′-(4,4′-isopropylidenediphenoxy) bis(phthalic anhydride) (4,4′-BPADA), i.e., 3,4′-(4,4′-isopropylidenediphenoxy) bis(phthalic anhydride) (3,4′-BPADA) and 3,3′-(4,4′-isopropylidenediphenoxy) bis(phthalic anhydride) (3,3′-BPADA), were synthesized through aromatic nucleophilic substitution from nitrophthalonitrile and bisphenol A. 3,4′-BPADA was first synthesized from two intermediates, i.e., 3-(4-[4-hydroxyphenylisopropylidene] phenoxy) phthalonitrile (3-BPADN) and 3,4′-(4,4′-isopropylidenediphenoxy) bis(phthalonitrile) (3,4′-BPATN). The corresponding three series of polyetherimides (PEIs) were prepared with two representative aromatic diamines (4,4′-oxydianiline and m-phenylenediamine (m-PDA)) via two-step procedure and chem. imidization. Isomeric polyimides showed Tgs from 206 to 256°C in nitrogen and Td5%s from 488 to 511°C in argon, good mech. properties (tensile moduli of 2.3-3.3 GPa, tensile strengths of 70-96 MPa, and elongations at break of 3.2%-5.1%), and good solubility With the introduction of 3-substituted phthalimide unit, PEIs displayed higher Tg values, lower strengths and elongations, better solubility and larger d-spacings. The rheol. properties of thermoplastic polyimide resins based on the BPADA isomers were investigated, which showed that polyetherimide PEI-3b derived from 3,3′-BPADA and m-PDA had the lowest melt viscosity among the isomers, indicating that the melt processibility had been greatly improved.
Recommanded Product: 4-Nitrophthalonitrile, 4-Nitrophthalonitrile, also known as 4-Nitrophthalonitrile, is a useful research compound. Its molecular formula is C8H3N3O2 and its molecular weight is 173.13 g/mol. The purity is usually > 95%.
4-Nitrophthalonitrile is a chemical substance that can be synthesized by the reaction of sodium carbonate with 3,4,5-trimethoxybenzyl alcohol. It can also be prepared using nitro phenol and sodium hydroxide. 4-Nitrophthalonitrile has been shown to have high photochemical activity in the presence of light. The frequency shift of its infrared spectrum is indicative of a nucleophilic addition reaction mechanism. 4-Nitrophthalonitrile has been used as an intermediate for producing other chemicals, such as herbicides and pharmaceuticals., 31643-49-9.
Referemce:
Nitrile – Wikipedia,
Nitriles – Chemistry LibreTexts