2,4,6-Cycloheptatrien-1-one, 2-chloro- → 1073-38-7

Temperature

-70 °C

A solution of 2-chloro-2,4,6-cycloheptatrien-1-one [2.82 g, described by T. Nozoe et al., Proc. Japan Acad., 28, 483 (1952)] in ethanol (20 ml) is added dropwise to a suspension, cooled to -70° C, of sodium sulfhydrate (2.2 g.) in ethanol (20 ml). The mixture is stirred at -70° C for 2 hours, allowed to warm to room temperature and stirred at room temperature for one hour. The mixture is filtered and the filtrate is evaporated. The residue is suspended in water, the mixture is acidified to pH2 with 10% hydrochloric acid and extracted with ethyl acetate. The organic extract is dried and evaporated. The residue is dissolved in benzene and subjected to chromatography on silica gel. The eluates are evaporated to give the title compound, mp 55° C.

1. temperatureto warm to room temperature
2. stirringstirred at room temperature for one hour
3. filtrationThe mixture is filtered
4. customthe filtrate is evaporated
5. extractionextracted with ethyl acetate
6. extractionThe organic extract
7. customis dried
8. customevaporated
9. dissolutionThe residue is dissolved in benzene
10. customThe eluates are evaporated

ORD record

ord-a50b3704f08b4e8c9b75dd78e75dcd63

Source dataset

uspto-grants-1978_01

DOI

10.6084/m9.figshare.5104873.v1

Patent number

US04066784