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  • 专利标题:   Preparation of 2,4'-difluorobenzophenone involves adding fluorobenzene and catalyst, heating, dripping o-fluorobenzoyl chloride, heat-preserving, placing in kettle filled with water, leaving still for layering, and distilling oil layer.
  • 专利号:   CN114805040-A
  • 发明人:   CAO F, YI G, LI X
  • 专利权人:   JIANGXI YONGTONG TECHNOLOGY CO LTD
  • 国际专利分类:   B01J021/04, B01J031/26, B01J032/00, B01J035/10, B01J037/06, B01J037/34, C07C045/45, C07C045/46, C07C049/813
  • 专利详细信息:   CN114805040-A 29 Jul 2022 C07C-045/45 202279 Chinese
  • 申请详细信息:   CN114805040-A CN10414265 20 Apr 2022
  • 优先权号:   CN10414265

▎ 摘　　要

NOVELTY - Preparation of 2,4'-difluorobenzophenone involves adding fluorobenzene and catalyst into an acylation kettle, heating at 45-55℃, dripping o-fluorobenzoyl chloride, heat-preserving for 2-4 hours, placing into a hydrolysis kettle filled with water, leaving still for layering, and distilling an oil layer under reduced pressure. USE - Preparation of 2,4'-difluorobenzophenone. ADVANTAGE - The method is simple, and ensures high yield and purity.