Alkali Metal Carbenoids: A Case of Higher Stability of the Heavier Congeners.
Alkali Metal Carbenoids: A Case of Higher Stability of the Heavier Congeners.
复制标题
碱金属类胡萝卜素:较重同系物具有更高稳定性的案例
DOI:
10.1002/anie.201601356
复制
发表时间:
2016
影响因子:
--
通讯作者:
V. H. Gessner
中科院分区:
文献类型:
--
作者:
S. Molitor;V. H. Gessner
As a result of the increased polarity of the metal–carbon bond when going down the group of the periodic table, the heavier alkali metal organyl compounds are generally more reactive and less stable than their lithium congeners. We now report a reverse trend for alkali metal carbenoids. Simple substitution of lithium by the heavier metals (Na, K) results in a significant stabilization of these usually highly reactive compounds. This allows their isolation and handling at room temperature and the first structure elucidation of sodium and potassium carbenoids. The control of stability was used to control reactivity and selectivity. Hence, the Na and K carbenoids act as selective carbene‐transfer reagents, whereas the more labile lithium systems give rise to product mixtures. Additional fine tuning of the M−C interaction by means of crown ether addition further allows for control of the stability and reactivity.
登录
查看更多内容
影响因子:
--
作者:
L. Orzechowski;G. Jansen;S. Harder
通讯作者:
S. Harder
影响因子:
15
作者:
S. Molitor;J. Becker;V. H. Gessner
通讯作者:
V. H. Gessner
影响因子:
2.8
作者:
Tobias Rüffer;Clemens Bruhn;Andreas H. Maulitz;and Dieter Ströhl;Dirk Steinborn
通讯作者:
Dirk Steinborn
DOI:
--
发表时间:
1979
期刊:
影响因子:
--
作者:
T. Clark;P. Schleyer
通讯作者:
P. Schleyer
影响因子:
16.6
作者:
Lavallo, Vincent;Canac, Yves;Bertrand, Guy
通讯作者:
Bertrand, Guy