Triethylamine → 1-Chloro-isoquinoline-5-sulfonic acid {2-[2-(2-trifluoromethyl-phenoxy)-ethylamino]-ethyl}-amide

온도

0 °C

A 4.2 mL of the (2-trifluoromethyl-phenoxy)-acetaldehyde stock solution (˜0.69 mmol) is added to a stirred mixture of 1-chloro-isoquinoline-5-sulfonic acid (2-amino-ethyl)-amide hydrochloride (200 mg, 0.621 mmol), 4 Å molecular sieve (400 mg) and NEt3 (0.19 mL, 1.4 mmol) in anhydrous CH3OH (5 mL) at ambient temperature under nitrogen. The resultant mixture is stirred for 16 hours. The mixture is cooled to 0° C. before it is treated with powdered sodium borohydride (53 mg, 1.4 mmol). The mixture is stirred at 0° C. for 1 hour and at ambient temperature for another 1 hour. After filtration and subsequent concentration in vacuo, the crude product is chromatographed on silica (gradient 0-5% CH3OH in CH2Cl2) to give 92 mg (0.19 mmol, 31% yield) of 1-chloro-isoquinoline -5-sulfonic acid {2-[2-(2-trifluoromethyl-phenoxy)-ethylamino]-ethyl}-amide. ESIMS: m/z 474 [(M+H)+, 35Cl], 476 [(M+H)+, 37Cl].

1. filtrationAfter filtration and subsequent concentration in vacuo
2. customthe crude product is chromatographed on silica (gradient 0-5% CH3OH in CH2Cl2)

ORD 기록

ord-3ae807e264a142d9a2104a02dfc166cf

출처 데이터셋

uspto-grants-2008_08

DOI

10.6084/m9.figshare.5104873.v1

특허 번호

US07414063B2