4-Bromo-2,6-difluorobenzonitrile is a kind of midbody compound of present widely used preparation liquid crystal material.
4-bromo-2, 6-difluorobenzonitrile is prepared by 3, 5-difluorobromobenzene as a basic raw material, through bromination diazotization and the synthetic liquid crystal intermediates 4-bromo-2 of sandermer reaction, 6-difluorobenzonilyile.
[1] Patent: WO2005/12283, 2005, A1. Location in patent: Page/Page column 54-55
[2] Patent: WO2010/59658, 2010, A1. Location in patent: Page/Page column 204-205
