Reversible addition of terminal alkenes to digermynes

Reversible addition of terminal alkenes to digermynes
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末端烯烃可逆加成至二革胺

DOI:
10.1039/c7cc08555a
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发表时间:
2018
期刊:
Chem. Commun.
影响因子:
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通讯作者:
N.
N.
中科院分区:
--
文献类型:
--
作者:
Sugahara;T.; Guo;J.-D.; Sasamori;T.; Nagase;S.; Tokitoh;N.

文献摘要

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具有空间要求高的Bbt(Bbt = 2,6-[CH(SiMe 3)2]2-4-[C(SiMe 3)3]-C6 H2)或Tbb(Tbb = 4-tBu-2,6-[CH(SiMe 3)2]2-C6 H2)基团的稳定的二锗炔与末端烯烃进行[2+2]环加成,得到相应的1,2-二锗环丁烯。在Bbt-取代的二锗炔的情况下,反应在室温下是可逆的,即,1,2-二锗环丁烯(Ge(II)物质)易于进行容易的还原消除,得到相应的二锗炔(Ge(I)物质)和烯烃。
Stable digermynes with sterically demanding Bbt (Bbt = 2,6-[CH(SiMe3)2]2-4-[C(SiMe3)3]-C6H2) or Tbb (Tbb = 4-tBu-2,6-[CH(SiMe3)2]2-C6H2) groups underwent [2+2] cycloadditions with terminal alkenes to give the corresponding 1,2-digermacyclobutenes. In the case of the Bbt-substituted digermyne, the reaction was reversible at room temperature, i.e., the 1,2-digermacyclobutene (Ge(II) species) is susceptible to a facile reductive elimination that affords the corresponding digermyne (Ge(I) species) and the alkene.