Azirine/oxindole ring enlargement via amidinium intermediates
A novel general method for the synthesis of oxindoles, namely the 'azirine/oxindole ring enlargement via amidinium-intermediates' has been established: the reaction of 2H-azirin-3-amines 1 with BF3· OEt2 in THF solution at -78° leads
Mekhael, Maged K. G.,Bienz, Stefan,Linden, Anthony,Heimgartner, Heinz
p. 2385 - 2404
(2007/10/03)
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