Abstract
Nitrosyl tetrafluoroborate may be used to diazotise an aniline to make a diazonium tetrafluoroborate salt. The need to isolate this toxic intermediate is avoided by carrying out the reaction in a low boiling solvent (such as dichloromethane or acetonitrile); then, after addition of a higher boiling one (such as dichlorobenzene), distilling off the first with the water formed in the diazotisation. The boron trifluoride generated in the dediazoniation is then reacted with NOF·6HF formed in the reaction of sodium nitrite with HF, to remake the nitrosyl tetrafluoroborate. It was not possible to isolate this compound quantitatively since it is decomposed by both the sodium fluoride and the water also present. The solution in HF is therefore used in the recycle and the HF recovered when the lower boiling solvent is distilled off.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
