A halon-free method for the synthesis of ‑bromofluoroolefins utilizing ethyldibromofluoro-acetate is disclosed via a Wittigtypereaction. The reaction system takes advantage of inexpensive and readily available reagents. The method was applied to a wide variety of aryl aldehydes. Both electron donating and electron withdrawing moieties on the aryl ring were tolerated and the desired olefin products
Base-catalyzed cyclization of monofluorodienynes: a new route to substituted fluorobenzene derivatives
作者:Yi Wang、Donald J. Burton
DOI:10.1016/j.tetlet.2006.10.100
日期:2006.12
The Sonogashira reaction of 1-bromo-1-fluoro-4-phenyl-1,3-butadienes and terminal alkynes, followed by cyclization in the presence of DABCO in refluxing NMP affords fluorinated benzene derivatives site-specifically in good yields. (c) 2006 Elsevier Ltd. All rights reserved.
SHIMIZU, MAKOTO;CHENG, GUO-HOU;YOSHIOKA, HIROSUKE, J. FLUOR. CHEM., 41,(1988) N 3, C. 425-427