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2005
Aminocarboxylic acids (hydrazinocarboxylic acids) and esters
Q 0440
α-Methylene-β-trichloroacetylamino Alkanoates from Trichloroacetimidates of
Baylis—Hillman Adducts. — Reaction of Baylis—Hillman adducts (I) with
11- 097 the
trichloroacetonitrile produces trichloracetimidates (III) which undergo thermal
[3.3]sigmatropic rearrangement in refluxing toluene. On the other hand, in the presence
of DABCO a rearrangement to trichloroacetamides (V) is observed. Products (IIIa) and
(Va) undergo NIS-promoted iodocyclization. — (GALEAZZI, R.; MARTELLI, G.;
ORENA*, M.; RINALDI, S.; Synthesis 2004, 15, 2560-2566; Dip. Sci. Mater. Terra,
Univ. Ancona, I-60131 Ancona, Italy; Eng.) — Mais
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