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1,2-Dicyclopropylethyne and (Cyclopropylethynyl)cyclobutane from an Efficient Synthesis of 1,2-(omega-Haloalkyl)ethynes and 1-Cycloalkyl-2-(omega-haloalkyl)ethynes (Pre Print).

机译：1,2-二环丙基乙烯和（环丙基乙炔基）环丁烷来自1,2-（ω-卤代烷基）乙炔和1-环烷基-2-（ω-卤代烷基）乙炔的高效合成（预印刷）。

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Lithium acetylides, generated from terminal acetylenes with n-BuLi in THF at -70 degrees C, react chemoselectively with omega-haloalkyl tosylate in the presence of 10 mole % of Bu4NI at 70 degrees C to furnish omega-haloalkyl acetylenes in very good yields. The omega-haloalkyl acetylenes undergo intramolecular alkylation with LDA to provide dicycloalkyl-ethynes.

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Suri, S. C.; Marcischak, J. C.;
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年度 2012
页码 1-7
总页数 7
原文格式 PDF
正文语种 eng
中图分类工业技术;
关键词
ALKYNES; ACETYLENES; CATALYSTS; SYNTHESIS(CHEMISTRY); CHEMOSELECTIVE ALKYNYLATION; BU4NI CATALYST; OMEGA-HALOALCOHOLS; OMEGA-HALOALKYL ALKYNES; INTRAMOLECULAR CYCLIZATION; WUQ0C5;

机译：烷烃;乙酰苯;催化剂;合成（化学）;化学螯合烷基化; BU4NI催化剂;ω-卤代烷醇;ω-卤代烷基醇;分子内环化; WUQ0C5;

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1,2-Dicyclopropylethyne and (Cyclopropylethynyl)cyclobutane from an Efficient Synthesis of 1,2-(omega-Haloalkyl)ethynes and 1-Cycloalkyl-2-(omega-haloalkyl)ethynes (Pre Print).

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