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2005
Reactions of organo-metal compounds
O 0350
Tributyl(3,3,3-trifluoro-1-propynyl)stannane as an Efficient Reagent for the
of Various Trifluoromethylated Heterocyclic Compounds. — Title
02- 055 Preparation
compound (III), synthesized from propene (I) and chlorobutylstannane (II) is used in
1,3-dipolar cycloadditions with diazomethane (IV), phenylazide (XI) and acetonitrile
oxide (VIII) to afford the tributylstannyl substituted heterocycles (V), (XII) and
(IX)/(X) in good yields, respectively. These heterocyclic compounds are proved to be
useful building blocks for the regioselective introduction of a functional group such as
an aryl group or iodine. — (HANAMOTO*, T.; HAKOSHIMA, Y.; EGASHIRA, M.;
Tetrahedron Lett. 45 (2004) 41, 7573-7576; Dep. Chem. Appl. Chem., Fac. Sci. Eng.,
Saga Univ., Honjo, Saga 840, Japan; Eng.) — M. Paetzel
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