作者:Cecilia Gómez、Fernando F Huerta、Isidro M Pastor、Miguel Yus
DOI:10.1016/s0040-4020(97)10141-7
日期:1997.12
The reaction of chlorinated acetylenic ether or amines I with lithium and a catalytic amount of DTBB (5%), in the presence of different electrophiles [(PrCHO)-C-i, (BuCHO)-C-i, PhCHO, Me2CO, (CH2)(5)CO, Me3SiCl] in THF at -78 or -105 degrees C leads, after hydrolysis with water, to the corresponding products 2. The same process applied to the previously deprotonated chloroalcohol 4a or the secondary amine 4b can be carried out in a two-step reaction giving the expected products 6 by using several electrophiles [(PrCHO)-C-i,(BuCHO)-C-i, PhCHO, Me2CO, (CH2)(5)CO, Me3SiCl] at -78 degrees C. (C) 1997 Elsevier Science Ltd.