Liu, Yingfan; Li, Xiaochuan; Sun, Saisai; Ji, Guangqian; Son, Young-A. published an article about the compound: 2,4-Dimethyl-1H-pyrrole( cas:625-82-1,SMILESS:CC1=CNC(C)=C1 ).Name: 2,4-Dimethyl-1H-pyrrole. Aromatic heterocyclic compounds can be classified according to the number of heteroatoms or the size of the ring. The authors also want to convey more information about this compound (cas:625-82-1) through the article.
C14H15B2F4I2N4, triclinic, P1[n.772] (number 2), a = 7.5458(7) Å, b = 8.5659(6) Å, c = 8.6089(5) Å, α = 108.189(6)°, β = 110.492(7)°, γ = 98.678(7)°, V = 473.6 Å3, Z = 1, Rgt(F) = 0.0334, wRref(F2) = 0.0831, T = 296.5 K.CCDC number: 1831891. The title compound was synthesized from commerically available 2,4-dimethylpyrrole as the literature described, The key intermediate BOPHY (bis(difluoroboron) l,2-bis((lH- pyrrol-2-yl)methylene)hydrazine) was obtained by three steps including Vilsmeier-Haack formylation, amidation, and com- plexation. The title compound was synthesized according to the following procedure. In ethanol 50 mL, BOPHY 338 mg (1.0 mmol), iodine 635 mg (2.5 mmol), and hydroiodic acid 352 mg (2.0 mmol) were mixed. Then it was heated to be refluxed in the dark, resulting in a deep-red solution Once the BOPHY disappeared on the TLC plate, the reaction mixture was quenched by water 50 mL. After a succesive washing, extraction, concentration, and purification, a yellow powder was obtained (500 mg, 85%). Crystals were obtained by slow evaporation within 5 days.
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