Synthesis of .ALPHA.,.ALPHA.-Dibromo Esters as Precursors of Ynolates.
作者:Mitsuru Shindo、Yusuke Sato、Ryoko Koretsune、Takashi Yoshikawa、Kenji Matsumoto、Kotaro Itoh、Kozo Shishido
DOI:10.1248/cpb.51.477
日期:——
Aliphatic α,α-dibromo esters, precursors of ynolates, were synthesized via bromination of lithium α-bromo ester enolates with 1,2-dibromotetrafluoroethane in good yields. α-Trimethylsilyl-α,α-dibromo esters were synthesized via radical bromination.
脂肪族α,α-二溴酯作为ynolate的前体,通过将锂α-溴酯enolate与1,2-二溴四氟乙烷进行溴化反应,以良好的产率合成。α-三甲基硅基-α,α-二溴酯则通过自由基溴化法合成。