A simple microwave-assisted preparation of 2-bromo-1-alkenes from 1-alkynes using the LiBr–TMSCl–TEAB reagent system
摘要:
2-Bromo-1-alkenes are cleanly and conveniently generated in good yields and selectivities via microwave-assisted hydrobromination of 1-alkynes using a combination of lithium bromide (LiBr), chlorotrimethylsilane (TMSCl), and tetraethylammonium bromide (TEAB) in acetonitrile (MeCN). (C) 2011 Elsevier Ltd. All rights reserved.
Palladium-catalyzed cross-coupling of unactivated alkylzinc reagents with 2-bromo-3,3,3-trifluoropropene and its application in the synthesis of fluorinated amino acids
trifluoromethylated and difluoromethylated aminoacids that are of great interest in peptide/protein based chemical biology. The advantages of the synthesis of these fluorinated aminoacids are synthetic simplicity and diversity from a simple and readily available key intermediate α-trifluoromethylalkene-containing aminoacid, providing a facile route for applications in medicinal chemistry and life science