Triethylamine → HCID 22485633, compound

Temperature

22 °C

A mixture of 1,3-bis-(4-chlorophenyl)-propan-2-one (3.20 g, 11.46 mmol), (Yang, H. and Hay, A. S., Synthesis, 1992, 467-472), in anhydrous ethanol (25 ml) was treated successively with titanium (IV) isopropoxide (6.8 ml, 22.9 mmol), methylamine hydrochloride (1.55 g, 22.9 mmol) and triethylamine (3.2 ml, 22.9 mmol). The resulting mixture was stirred at 22° C. for 18 h and then treated with sodium borohydride (0.65 g, 17.2 mmol). After 6 h at 22° C., the reaction mixture was quenched by the addition of 2 N aqueous ammonia (60 ml) and the resulting precipitate was filtered and rinced with ether. The combined ether extracts were washed with brine, dried (anhydrous sodium carbonate) and concentrated. Distillation of the residue in vacuo gave 2.60 g (77% yield) of the title amine as a clear oil: bp 135-140° C./0.2 torr, (bulb to bulb distillation, air bath temperature). 1HNMR 400 MHz (C6D6) δ (ppm): 2.19 (3H, s, NCH3), 2.42 (4H, d, J=6.5 Hz, CH2), 2.69 (1H, m, CH), 6.84 (4H, d, J=8.5 Hz, aromatics), 7.22 (4H, d, J=8.5 Hz, aromatics). The hydrochloride salt was obtained as a white solid. Anal. calcd for C16H17C2N—HCl: C, 58.11; H, 5.49; N, 4.24. Found: C, 57.85; H, 5.35; N, 4.13.

1. waitAfter 6 h at 22° C.
2. customthe reaction mixture was quenched by the addition of 2 N aqueous ammonia (60 ml)
3. filtrationthe resulting precipitate was filtered
4. washThe combined ether extracts were washed with brine
5. dry with materialdried (anhydrous sodium carbonate)
6. concentrationconcentrated
7. distillationDistillation of the residue in vacuo

ORD record

ord-1ddbdad0b4544ec18ec404d30410c7db

Source dataset

uspto-grants-2005_05

DOI

10.6084/m9.figshare.5104873.v1

Patent number

US06890942B2