Pd-catalyzed cross-coupling reaction of (<em>Z</em>)- and (<em>E</em>)-bromoenyne: unusual stereochemical outcome期刊界 All Journals 搜尽天下杂志传播学术成果专业期刊搜索期刊信息化学术搜索

Pd-catalyzed cross-coupling reaction of (Z)- and (E)-bromoenyne: unusual stereochemical outcome

Authors:	Jun&rsquo ichi Uenishi^{,Katsuaki Matsui,Masashi Ohmi}

Affiliation:	Kyoto Pharmaceutical University, Misasagi, Yamashina, Kyoto 607-8412, Japan

Abstract:	Pd-catalyzed cross-coupling reaction of (E)-bromoenyne 1Z with 1-alkyne and tributylvinyl-stannane occurs with retention of the configuration in benzene but with an inversion of the configuration in DMF or CH₂Cl₂. On the other hand, that of (Z)-bromoenyne 1E occurs with retention of the configuration in these solvents.

Keywords:	Bromoenyne Sonogashira coupling Stille coupling, Enediyne Stereocontrol
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