3-Vinyl oxindole-chromone synthon as a skeletal reconstruction reactant for the synthesis of 2-hydroxy benzoyl pyridones was written by Zhang, Lei;Liu, Ren-Ming;Wang, Wei-Na;Liu, Xiong-Li;Dai, Yi-Feng;Yu, Zhang-Biao;Peng, Li-Jun. And the article was included in New Journal of Chemistry in 2022.Quality Control of 2-Methoxyethylamine The following contents are mentioned in the article:
The first example of ring-opening and recyclization reaction of 3-vinyl oxindole-chromones I [R1 = H, 4-F, 5-Br, etc.; R2 = H, 5-F, 4-Cl, etc.] as versatile synthons, which can react with ammonia or primary aliphatic amines as binucleophiles was developed, serving as a fruitful strategy for the eco-friendly and atom-economic synthesis of a new family of skeletally diverse 2-hydroxy benzoyl pyridones II [R3 = H, CH2CH2OMe, CH2CH2CN, etc.] with high to excellent yields (70-92%). The advantages of this methodol., including the use of easily available raw materials and the catalyst-free, wide functional group tolerance, and gram-scale synthesis, make the developed methodol. a practical way to access important biol. active 2-hydroxy benzoyl pyridone mols. This study involved multiple reactions and reactants, such as 2-Methoxyethylamine (cas: 109-85-3Quality Control of 2-Methoxyethylamine).
2-Methoxyethylamine (cas: 109-85-3) belongs to ethers. Esters typically have a pleasant smell; those of low molecular weight are commonly used as fragrances and are found in essential oils and pheromones. Cyclic esters are called lactones, regardless of whether they are derived from an organic or inorganic acid. One example of an organic lactone is γ-valerolactone.Quality Control of 2-Methoxyethylamine
Referemce:
Ether – Wikipedia,
Ether | (C2H5)2O – PubChem