4-Fluoro-2-methylbenzonitrile (CAS 147754-12-9) é uma impureza aromática frequentemente monitorada em processos sintéticos que produzem derivados benzonitrílicos. Apresenta propriedades físico-químicas como baixa polaridade e ponto de ebulição moderado que influenciam sua separação por cromatografia gasosa e líquida. Em análises de controle de qualidade detecta-se por GC-MS | HPLC-UV e espectroscopia de RMN com sinais característicos no anel aromático e no grupo nitrila. Sua formação está associada a reações de substituição incompletas e a transesterificação de precursores. Avaliar estabilidade térmica | limiares de aceitabilidade e métodos de remoção é essencial para minimizar impacto em lotes finais.
Referências
Cao, Xudong, et al. “Alkyl Effects on the Optoelectronic Properties of Bicarbazole/Cyanobenzene Hybrid Host Materials: Double Delayed Fluorescent Host/Dopant Systems in Solution-Processed OLEDs.â€Â Dyes and Pigments, vol. 136, Jan. 2017, pp. 543–52, https://doi.org/10.1016/j.dyepig.2016.09.008.
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