Name: 1-Bromo-2-pentyne. The reaction of aromatic heterocyclic molecules with protons is called protonation. Aromatic heterocycles are more basic than benzene due to the participation of heteroatoms. Compound: 1-Bromo-2-pentyne, is researched, Molecular C5H7Br, CAS is 16400-32-1, about Palladium-Catalyzed Cyclocarbonylation Approach to Thiadiazafluorenones: A Correction. Author is Veltri, Lucia; Amuso, Roberta; Cuocci, Corrado; Vitale, Paola; Gabriele, Bartolo.
In the presence of PdI2 using KI2, CO, and O2 in MeOH, benzimidazolyl propargyl thioethers with internal alkyne moieties such as I underwent cyclocarbonylation reaction to yield 2-methyl-3-substituted thiadiazafluorenones (benzimidazolothiazinones) such as II. The structures of II and of two other benzimidazolothiazinones were determined by X-ray crystallog. A correction is provided to rectify the previous erroneous assignment of the position of the Me group in the thiadiazafluorenones; the previous products were formed as the 2-Me thiadiazafluorenones and not as the 3-Me thiadiazafluorenones.
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Reference:
Tetrahydropyran – Wikipedia,
Tetrahydropyran – an overview | ScienceDirect Topics