Preparation of 1-trifluoroacetyl indolizines and their derivatives via thecycloaddition of pyridinium N-ylides with 4-4-ethoxyl-1,1,1-trifluorobut-3-en-one
Sz. Zhu et al., Preparation of 1-trifluoroacetyl indolizines and their derivatives via thecycloaddition of pyridinium N-ylides with 4-4-ethoxyl-1,1,1-trifluorobut-3-en-one, J FLUORINE, 99(2), 1999, pp. 183-187
Under basic reaction conditions pyridinium or isoquinolinium N-ylides (C5H5
N+ CH2ETBr- or C9H7N+CH2YBr-, Y: CO2R, CN, PhCO) reacted readily with 4-eth
oxyl-1,1,1-trifluorobut-3-en-2-one to give the corresponding I-trifluoroace
tyl substituted indolizines or pyrrolo[1,2-a]isoquinolines. The molecular s
tructure of 1-trifluoromethyl-3-methoxyl-pyrrolo-[1,2-a]isoquinoline is pre
sented. (C) 1999 Elsevier Science S.A. All rights reserved.