3-Bromo-1-propanol → HCID 19392369, compound

Diisopropylethylamine (25.488 g, 34.35 mL, 0.197 mol) was added dropwise to the solution of 3-bromopropanol (25 g, 0.18 mol), t-butyldimethylsilyl chloride (29.81 g, 0.197 mol), and DMAP (0.880 g, 7.2 mmol) in methylene chloride (250 mL) placed in a dry 500 mL three-necked, round-bottomed flask kept at ice bath and equipped with a Teflon-coated magnetic stirring bar, a 50 mL pressure-equalizing dropping funnel, a stopper, and a reflux condenser connected to an argon flow line. The reaction mixture was stirred at room temperature for 24 hours, washed successively with water (2×150 mL), dilute ammonium chloride solution (1×100 mL), and brine (2×150 mL). The organic solution was dried (sodium sulfate), the solvent was removed in vacuo, and the residual oil was distilled: bp 62°-64° C. (2 mm Hg); ; 1H-NMR (CDCl3, 200 MHz) δ3.71 (t, J=6.1 Hz, 2H), 3.46 (t, J= 7.0, 2H), 2.00 (m, 2H), 0.87 (s, 9H), 0.06 (s, 6H); CIMS m/e 253.

1. customround-bottomed flask kept at ice bath
2. customequipped with a Teflon-coated magnetic stirring bar
3. washwashed successively with water (2×150 mL), dilute ammonium chloride solution (1×100 mL), and brine (2×150 mL)
4. dry with materialThe organic solution was dried (sodium sulfate)
5. customthe solvent was removed in vacuo
6. distillationthe residual oil was distilled

ORD record

ord-660d1adc009a45aa9ce689bb8e87ecf8

Source dataset

uspto-grants-1995_08

DOI

10.6084/m9.figshare.5104873.v1

Patent number

US05439899