双语化学辞典Chem Lexicon
反应 · 有机化学 · 过渡金属催化偶联 Organic chemistry · Transition-metal-catalysed coupling

施蒂勒偶联反应Stille reaction

拼音Pinyin shī dì lè ǒu lián fǎn yìng 别名Also 斯蒂尔偶联;Stille 偶联;Stille coupling; Migita–Kosugi–Stille coupling

定义Definition

施蒂勒偶联是钯催化下有机锡化合物(R–SnBu₃)与有机卤化物或三氟甲磺酸酯形成 C–C 键的交叉偶联反应。

The Stille coupling is the palladium-catalysed cross-coupling of an organostannane (R–SnBu₃) with an organic halide or triflate to form a C–C bond.

机理与特点Mechanism and features

经氧化加成、转金属化(锡到钯)、还原消除的标准循环。有机锡试剂对空气、水稳定,几乎不与羰基等官能团反应,且无需加碱,因此在复杂天然产物合成中很有价值。LiCl、CuI 添加剂可加速转金属化。

It follows oxidative addition, Sn-to-Pd transmetalation and reductive elimination. Stannanes are air- and water-stable, inert toward carbonyls and need no base, making the reaction valuable in complex natural-product synthesis. LiCl or CuI additives speed transmetalation.

由来Origin

小杉正纪、右田俊彦等于 1977 年首先报道有机锡的钯催化偶联;美国化学家约翰·施蒂勒自 1978 年起系统发展,使之成为通用方法。

Kosugi, Migita and co-workers first reported Pd-catalysed coupling of stannanes in 1977; the American chemist John Stille developed it systematically from 1978 into a general method.

缺点Drawbacks

有机锡化合物毒性大,锡残留难以从产物中除尽,限制了它在药物生产中的应用,许多场合已被铃木偶联取代。

Organotin compounds are toxic and tin residues are hard to remove, limiting pharmaceutical use; the Suzuki coupling has replaced it in many cases.

反应Reactions

R–SnBu3 + R′–X Pd(0)⟶ R–R′ + Bu3SnX

Pd(PPh₃)₄ 或 Pd₂(dba)₃/AsPh₃,甲苯或 DMF,60–110 °C

Pd(PPh₃)₄ or Pd₂(dba)₃/AsPh₃ in toluene or DMF at 60–110 °C

  1. 氧化加成。

    Oxidative addition.

  2. 有机基团从锡转移到钯。

    Transfer of the organic group from tin to palladium.

  3. 还原消除生成产物。

    Reductive elimination gives the product.

CH2=CHSnBu3 + PhI ⟶ PhCH=CH2 + Bu3SnI

乙烯基化。

A vinylation.

年表Timeline

  • 1977

    小杉、右田报道有机锡偶联

    Kosugi and Migita report stannane coupling

  • 1978

    施蒂勒开始系统研究

    Stille begins systematic studies