The three-dimensional configuration of the ester heterocycle is basically the same as that of the carbocycle. Compound: 1-Bromo-2-pentyne(SMILESS: CCC#CCBr,cas:16400-32-1) is researched.Related Products of 603130-12-7. The article 《Palladium-Catalyzed Cyclocarbonylation Approach to Thiadiazafluorenones: A Correction》 in relation to this compound, is published in Journal of Organic Chemistry. Let’s take a look at the latest research on this compound (cas:16400-32-1).
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