Hydrochloric Acid → 1-Azido-2-fluorobenzene

A mixture of 4.44g. (0.04 mole) of 2-fluoroaniline in 16 ml. of water and 9 ml. of concentrated HCl, kept at 0°-5° C., was treated with a solution of 2.90g. (0.04 mole) of NaNO2 in 10 ml. of water. The reaction mixture was aged for one-half hour at 0°-5° C. and there was then added slowly to the mixture a solution of 2.6g. (0.04 mole) of NaN3 in 10 ml. of water. The reaction mixture was then allowed to slowly reach room temperature, and it was noted that a gas was evolved. There was then added 40 ml. of petroleum ether, and the reaction mixture was shaken well, after which it was observed to separate into two separate layers. The yellow petroleum ether layer was separated, dried over MgSO4, and concentrated under reduced pressure at a temperature of about 30° C. There was produced 5.5g. of a yellow oil and the structure of the final product was confirmed by IR.

1. additionA mixture of 4.44g
2. customkept at 0°-5° C.
3. additionwas treated with a solution of 2.90g
4. waitThe reaction mixture was aged for one-half hour at 0°-5° C.
5. additionthere was then added slowly to the mixture a solution of 2.6g
6. customwas then allowed to slowly reach room temperature, and it
7. additionThere was then added 40 ml
8. customto separate into two
9. customseparate layers
10. customThe yellow petroleum ether layer was separated
11. dry with materialdried over MgSO4
12. concentrationconcentrated under reduced pressure at a temperature of about 30° C
13. customThere was produced 5.5g

ORD record

ord-8e11bd70a6514627b97203a851672e8f

Source dataset

uspto-grants-1979_03

DOI

10.6084/m9.figshare.5104873.v1

Patent number

US04145364