Researchers who often do experiments know that organic synthesis is a process of preparing more complex target molecules from simple raw materials through one or more chemical reactions. Generally, it requires fewer steps, and cheap raw materials. 13726-14-2, name is 4-Chloro-3-methoxyaniline, A new synthetic method of this compound is introduced below., category: chlorides-buliding-blocks
A mixture of substituted 2,4-dichloropyrimidine (1.0 equiv.), and substituted aniline (1.0-1.05 equiv.), and DIPEA (1.2 equiv.) in isopropanol (0.1 M) was stirred and heated at reflux. The reaction time, work-up, and product isolation procedure are described below. 2,5-Dichloro-/Y4-(4-chloro-3-methoxyphenyl)pyrimidin-4-amine (SG1-168): This was prepared from 2,4,5-trichloropyrimidine (0.500 g), 4-chloro-3-methoxyaniline (0.451 g), and DIPEA (0.570 mL) using procedure B (reaction time, 12 h). The solvent was removed and EtOAc (20 mL) was added. The organic layer was extracted with water (20 mL). The aqueous layer was re-extracted with EtOAc (20 mL). The organic layers were combined and washed with water and brine (20 mL each), dried (Na2S04) and concentrated under reduced pressure. The resulting dark purple oil was triturated using EtOAc/hexanes to give the title compound as a light purple solid (0.680 g, 82%). Mp: 136-138 C. NMR (400 MHz, DMSO-ifc): delta 9.57 (s, 1H, disappeared on D20 shake), 8.41 (s, 1H), 7.49 (d, / = 2.2 Hz, 1H), 7.41 (d, / = 8.6 Hz, 1H), 7.28 (dd, / = 8.6, 2.2 Hz, 1H), 3.82 (s, 3H). HPLC-MS (ESI+): m/z 308.1 [40%, (M35C137C137C1+H)+], 306.1 [98%, (M35C135C137C1+H)+], 304.0 [100%, (M35C135C135C1+H)+].
The synthetic route of 13726-14-2 has been constantly updated, and we look forward to future research findings.
Reference:
Patent; H. LEE MOFFITT CANCER CENTER & RESEARCH INSTITUTE, INC.; SCHOeNBRUNN, Ernst; LAWRENCE, Nicholas J.; LAWRENCE, Harshani R.; (293 pag.)WO2017/66428; (2017); A1;,
Chloride – Wikipedia,
Chlorides – an overview | ScienceDirect Topics