7-Fluoroisoquinoline

1-Chloro-7-fluoroisoquinoline (60 g, 330 mmol) was dissolved in methanol to add Pd/C 6 g, NaOH (53 g, 1.3 mol) was reacted under hydrogen overnight, suction filtered, and the filtrate was dried. A column (PE) gave 20 g of product (7-fluoroisoquinoline).General procedure: A solution of 5-methoxy-1H-indene (2.40 g, 16.4 mmol) in MeOH (20mL) and CH2Cl2 (50 mL) was cooled to -78 C under N2. O3 (with O2 carrier gas) was bubbled through the solution for 30 min. An exotherm to -65 C occurred while the reaction was in progress; this subsided at the end of the reaction and a blue colouration of dissolved ozone was seen. Unreacted ozone was removed by flushing the reaction vessel with N2. NaHCO3 (1.75 g, 20.9 mmol) and Me2S (3.28 mL, 44.3 mmol) were added. The cooling bath was removed and the mixture was stirred for 16 h at r.t.. Concd (28-30%) aq ammonia (20 mL)was added and the mixture stirred for a further 24 h. The mixture was extracted with CH2Cl2 (3 × 100 mL) and the combined organic phases were extracted with 5% aq HCl (2 × 100 mL). The combined aqueous phases were washed with CH2Cl2 (100 mL) and basified with Na2CO3 to pH 10 with stirring. An oil precipitated from solution; the mixture was extracted with CH2Cl2 (2 × 100 mL). The combined organic extractswere washed with sat. brine (50 mL), dried (MgSO4) and evaporated to afford the title compound 6 (1.27 g, 49%) as a brown oil, which was used without further purification.General procedure: Dimethylsulfamoyl chloride (34; 0.144 mL, 1.34 mmol) was added to a solution of isoquinoline (5; 157 mg, 1.22 mmol) and 1H-indol-7-yl acetate (33; 213 mg, 1.22 mmol) in toluene (4 mL) at r.t. The mixture was concentrated to a thick but stirrable paste (1.5 mL), which was stirred at 50 C for 3 h. TLC and LCMS showed reaction was largely complete by this time. The mixture was diluted with EtOAc (40 mL), washed with H2O (40 mL) and sat. brine (20 mL), dried (Na2SO4), filtered and evaporated to dryness. The residue was purified by flash silica gel chromatography (loading in CH2Cl2) (eluent: gradient 20 to 50% EtOAc in heptane). Fractions containing the desired product were evaporated to afford the title compound 37a (208 mg, 42%) as a white solid7-Fluoroisoquinoline (45 g, 305 mmol) was dissolved in 350 mL of acetic acid and heated to 110 C. N-bromosuccinimide (NBS) (65 g, 367 mmol) was added in portions. After the addition, the reaction was carried out for 2 h, the solvent was removed, and the column (PE) was passed to obtain 20 g of the desired product (4-bromo-7-fluoro quinoline).1-Chloro-

Molecular Weight:147.15
XLogP3:2.3
Hydrogen Bond Acceptor Count:2
Exact Mass:147.048427358
Monoisotopic Mass:147.048427358
Topological Polar Surface Area:12.9
Heavy Atom Count:11
Complexity:138
Covalently-Bonded Unit Count:1
Compound Is Canonicalized:Yes