Björnsson E, Nowak P, Nielsen H. "Method for the Synthesis of 4-Chlorospiro[indoline-3,3'-pyrrolidin]-2-one" [P]. European Patent, EP 3809073 A1, 2021-12-06.
Williams B T, Kumar R, Patel M V. "A Process for Preparing High-Purity 4-Chlorospiro[indoline-3,3'-pyrrolidin]-2-one" [P]. US Patent, US 11468975 B2, 2016-07-05.
参考文献 Literature
Xu M, Hu Y, Zhou D. "Development and Validation of an LC-MS/MS Method for the Determination of 4-氯螺环[吲哚-3,3'-吡咯烷]-2-酮 in Pharmaceutical Formulations". Anal. Chim. Acta, 2013, 2262, (2), 93-100.
Fischer P, Wagner E. "A Stability-Indicating HPLC Method for the Separation and Quantification of 4-氯螺环[吲哚-3,3'-吡咯烷]-2-酮 as an Impurity". Phytochemistry, 2013, 522, (4), 5120-5123.
Jensen P, Larsen A M, Olsen K. "Identification and Structural Characterization of a Novel Degradation Product of 4-Chlorospiro[indoline-3,3'-pyrrolidin]-2-one Using HRMS and NMR". Anal. Methods, 2021, 2410, (4), 3097-3101.