Convenient synthesis of mono- and di-β-hydroxy-β-bis(trifluoromethyl)-(di)imines from β-hydroxy-β-bis(trifluoromethyl)-ketones and (di)amines
作者:Nicolas Marquet、Ekaterina Grunova、Evgueni Kirillov、Miloud Bouyahyi、Christophe M. Thomas、Jean-François Carpentier
DOI:10.1016/j.tet.2007.10.096
日期:2008.1
A series of novel β-hydroxy-β-bis(trifluoromethyl)-imines (2a–j) and di(β-hydroxy-β-bis(trifluoromethyl))-diimines (3a–f) were prepared in moderate to good yields via a simple two-step approach: first, β-hydroxy-β-bis(trifluoromethyl)-ketones (1a–c) were obtained by a catalyst-free aldol reaction between liquid hexafluoroacetone sesquihydrate and ketones (acetone, acetophenone, and pinacolone, respectively);