Formaldehyde → HCID 2840585, compound

To a solution of 1-phenylpropargyl alcohol (119.12 g) in dioxane (650 ml), a solution of diethylamine (99.2 g) in water (300 ml), a solution of 37% formalin (148.9 g) in dioxane (200 ml) and a solution of cupric sulfate (pentahydrate) (8.11 g) in water (180 ml) were added with stirring at room temperature. The resulting mixture was stirred at about 70° C. for 2 hours and then filtered off, and the filtrate was evaporated under reduced pressure. The residual oily material was dissolved in benzene (450 ml) and extracted with three 300 ml portions of 5% aqueous solution of hydrochloric acid, and the extracts were combined together and washed with benzene (300 ml). The washed extract was neutralized with an aqueous solution of sodium hydroxide and extracted with three 400 ml portions of chloroform, and the extracts were washed with water (500 ml) and dried over sodium sulfate. The chloroform-extracts were evaporated and then distilled to afford N-(4-phenyl-4-hydroxy-2-butynyl)-N,N-diethylamine, b.p., 134°-137° C./0.12 mmHg.

1. stirringThe resulting mixture was stirred at about 70° C. for 2 hours
2. filtrationfiltered off
3. customthe filtrate was evaporated under reduced pressure
4. dissolutionThe residual oily material was dissolved in benzene (450 ml)
5. extractionextracted with three 300 ml portions of 5% aqueous solution of hydrochloric acid
6. washwashed with benzene (300 ml)
7. extractionThe washed extract
8. extractionextracted with three 400 ml portions of chloroform
9. washthe extracts were washed with water (500 ml)
10. dry with materialdried over sodium sulfate
11. customThe chloroform-extracts were evaporated
12. distillationdistilled

ORD record

ord-fdf191cf285a496382a519ebe1ec8adc

Source dataset

uspto-grants-1983_11

DOI

10.6084/m9.figshare.5104873.v1

Patent number

US04418079