Analyzing the synthesis route of 223671-15-6

As the paragraph descriping shows that 223671-15-6 is playing an increasingly important role.

223671-15-6, 7-Bromoisoquinolin-1-ol is a isoquinoline compound, ?involved in a variety of chemical synthesis. Rlated chemical reaction is continuously updated

Preparation 63 1,4-Dichloro-7-isoquinolinecarbonyl chloride A solution of N-chlorosuccinimide (4.13 g, 31 mmol) in MeCN (50 mL) was added dropwise to a stirred solution of 7-bromo-1-(2H)-isoquinolone (6.6 g, 29.5 mmol) in MeCN (150 mL) which was heating under reflux. The mixture was heated under reflux for an additional 3 h and then cooled to room temperature. The resulting precipitate was collected by filtration, with MeCN rinsing, and then dried in vacuo to give 7-bromo-4-chloro-1(2H)-isoquinolone (6.72 g, 26.0 mmol) as a white solid. mp 241-243 C. 1H (DMSO-d6, 300 MHz) delta 7.5 (1H, s), 7.73 (1H, d), 7.8 (1H, dd), 8.3 (1H, s) ppm. LRMS 259 (MH+), 517 (M2H+). Anal. Found: C, 41.69; H, 1.90; N, 5.37. Calc for C9H5BrClNO: C, 41.80; H, 1.95; N, 5.42., 223671-15-6

As the paragraph descriping shows that 223671-15-6 is playing an increasingly important role.

Reference:
Patent; PFIZER INC.; Pfizer Limited; EP1077945; (2003); B1;,
Isoquinoline – Wikipedia
Isoquinoline | C9H7N – PubChem