Functionalized alkynyl-chlorogermanes: hydrometallation, Ge-Cl bond activation, Ge-H bond formation and chlorine-tert-butyl exchange via a transient germyl cation.
Functionalized alkynyl-chlorogermanes: hydrometallation, Ge-Cl bond activation, Ge-H bond formation and chlorine-tert-butyl exchange via a transient germyl cation.
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功能化的炔基-氯锗烷:加氢金属化、Ge-Cl 键活化、Ge-H 键形成以及通过瞬时甲锗基阳离子进行氯-叔丁基交换
DOI:
10.1039/c5dt03918e
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发表时间:
2016
影响因子:
4
通讯作者:
W. Uhl
中科院分区:
文献类型:
--
作者:
C. Honacker;Z.-W. Qu;J. Tannert;M. Layh;A. Hepp;S. Grimme;W. Uhl
Treatment of alkynyl–arylchlorogermanes ArylnGe(Cl)(CC–tBu)3−n (n = 1, 2) with HMtBu2 (M = Al, Ga) yielded mixed Al or Ga alkenyl–alkynylchlorogermanes via hydrometallation reactions. Intramolecular interactions between the Lewis-basic Cl atoms and the Lewis-acidic Al or Ga atoms afforded MCGeCl heterocycles. The endocyclic M–Cl distances were significantly lengthened compared to the starting compounds and indicated Ge–Cl bond activation. Dual hydrometallation succeeded only with HGatBu2. One Ga atom of the product was involved in a Ga–Cl bond, while the second one had an interaction to a C–H bond of a phenyl group. In two cases treatment of chlorogermanes with two equivalents of HAltBu2 resulted in hydroalumination of one alkynyl group and formation of unprecedented Ge–H functionalized germanes, Aryl–Ge(H)(CC–tBu)[C(AltBu2)C(H)–tBu] (Aryl = mesityl, triisopropylphenyl). The Al atoms of these compounds interacted with the α-C atoms of the alkynyl groups. Ph(Cl)Ge(CC–tBu)[C(AltBu2}C(H)–tBu] reacted in an unusual Cl/tBu exchange to yield the tert-butylgermane Ph(tBu)Ge(CC–tBu)[C{Al(tBu)(Cl)}C(H)–tBu]. Quantum chemical calculations suggested the formation of a germyl cation as a transient intermediate.
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影响因子:
3.3
作者:
W. Uhl;M. Rohling;Jutta Kösters
通讯作者:
Jutta Kösters
影响因子:
2.8
作者:
Matti Reissmann;A. Schäfer;Sebastian T. Jung;T. Müller
通讯作者:
T. Müller
影响因子:
--
作者:
W. Uhl;S. Pelties;J. Tannert;B. J. Ravoo;E.-U. Würthwein
通讯作者:
E.-U. Würthwein
DOI:
--
发表时间:
2013
期刊:
影响因子:
--
作者:
K. V. Zaitsev;Andrey A. Kapranov;A. Churakov;O. Poleshchuk;Y. Oprunenko;B. N. Tarasevich;G. Zaitseva;S. Karlov
通讯作者:
S. Karlov
DOI:
--
发表时间:
2006
期刊:
影响因子:
--
作者:
V. Khrustalev;Ivan A. Portnyagin;I. Borisova;N. N. Zemlyansky;Yu. A. Ustynyuk;M. Antipin;M. Nechaev
通讯作者:
M. Nechaev