Small-Ring Compounds. XLVI. Stabilized Cyclopropylcarbinyl Anions. A Retro Cyclopropylcarbinyl-Allylcarbinyl Rearrangement<sup>1</sup>
作者:Adalbert Maercker、John D. Roberts
DOI:10.1021/ja00960a031
日期:1966.4
The cyclopropylcarbinyl anion is stabilized by a phenyl group attached to the carbinyl carbon toward ring opening, provided that potassium or sodium is the counterion. Replacement of potassium by lithium or magnesium in ether leads to immediate rearrangement and formation of the corresponding covalent allylcarbinyl organometallic compound. These rearrangements are reversible as can be demonstrated
环丙基羰基阴离子通过连接到羰基碳上的苯基向开环方向稳定,前提是钾或钠是抗衡离子。在醚中用锂或镁代替钾会导致立即重排并形成相应的共价烯丙基羰基有机金属化合物。这些重排是可逆的,正如二苯基环丙基-羰基锂所证明的那样,它在四氢呋喃中稳定,但在乙醚中完全打开为 y,y-二苯基烯丙基羰基锂。这种情况下的逆重排可以通过简单地向乙醚溶液中加入四氢呋喃来实现。y,y-二苯基烯丙基羰基溴化汞与钾的反应导致闭环,形成相应的环丙基羰基钾衍生物。