Williams B T, Johnson M A, Fischer A B. "一种的合成方法" [P]. US Patent, US 10062219 B2, 2015-03-18.
Mueller T C, Martínez F, Nielsen H. "Method for the Synthesis of 3-Bromo-1,3a-dihydropyrazolo[1,5-a]pyrimidine" [P]. European Patent, EP 3911021 A1, 2016-08-27.
Johansson L, Martínez F, Rossi M. "A Process for Preparing High-Purity 3-Bromo-1,3a-dihydropyrazolo[1,5-a]pyrimidine" [P]. European Patent, EP 3141458 A1, 2022-02-19.
参考文献 Literature
Chen X Y, Liu M, Zhao W Q. "Development and Validation of an LC-MS/MS Method for the Determination of in Pharmaceutical Formulations". Environ. Sci. Technol., 2018, 2012, (2), 759-781.
Kowalski T, Nowak Z. "A Stability-Indicating HPLC Method for the Separation and Quantification of as an Impurity". J. Sep. Sci., 2012, 2138, (12), 5920-5930.
Chen X Y, Liu M, Zhao W Q. "Identification and Structural Characterization of a Novel Degradation Product of 3-Bromo-1,3a-dihydropyrazolo[1,5-a]pyrimidine Using HRMS and NMR". Molecules, 2010, 821, 6569-6589.