Benzylamine → 3-Octanone

Temperature

0 °C

A solution of 2,5-dimethoxytetrahydrofuran (22.2 ml) in 0.1M HCl was refluxed for 1 hour and then cooled to 0° C. 1.3-Acetonedicarboxylic acid (25 g), benzylamine (15.6 ml) and 10% sodium acetate (95 ml) was added in one portion and the resulting mixture was stirred at room temperature for 1 hour and then heated to 50° C. for 5 hours. The reaction mixture was cooled, basified with 2M sodium hydroxide, extracted with dichloromethane and washed with water. The organics were extracted with 1M hydrochloric acid and washed with dichloromethane. The aqueous layer was basified with 2M sodium hydroxide and extracted with ethyl acetate (3×100 ml). The organic extracts were dried and evaporated to dryness to give the title compound as a brown oil which was used without further purification. Yield 13.66 g. MS 216 MH+.

1. temperatureheated to 50° C. for 5 hours
2. temperatureThe reaction mixture was cooled
3. extractionextracted with dichloromethane
4. washwashed with water
5. extractionThe organics were extracted with 1M hydrochloric acid
6. washwashed with dichloromethane
7. extractionextracted with ethyl acetate (3×100 ml)
8. customThe organic extracts were dried
9. customevaporated to dryness

ORD record

ord-3d233f0724a0410ba2ce1c40ce4d45e1

Source dataset

uspto-grants-2007_11

DOI

10.6084/m9.figshare.5104873.v1

Patent number

US07294636B2