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We present here a practical synthesis of functional 3-amino-benzofurans through base-promoted intramolecular cyclization of (2-propargyl ether) arylimines. A systematic study of the cyclization system revealed that the presence and the amount of base played an essential role in this reaction. The results showed that the cyclization proceeded cleanly and smoothly under mild reaction conditions, employing...
Acetylenic selenides react with HX (X=Cl, Br, I) at room temperature to give 1-halo-1-selenoalkenes in good yields. The 1-iodo-1-selenoalkenes were transformed into the corresponding vinylic organometallics (M=Zn, Cu, Cr).
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