From an N-Heterocyclic Silacyclopropene to Donor-Supported Silacyclopropenylium Cations
摘要:
Addition of equimolar amounts of B(C6F5)(3) to the N-heterocyclic silacyclopropenes[LSi(C2H2)](2;L=CH{(C=CH2)-(CMe)(2,6-(Pr2C6H3N)-Pr-i)(2)}) affords the first isolable, zwitterionic silacyclopropenylium-boranide compounds 3. Protonation of 2 with the convenient Bronsted acid H(OEt2)(2)B+(C6F5)(4)(-) leads to quantitative formation of the corresponding silacyclopropenylium salt [4-B(C6F5)(4)].
From an N-Heterocyclic Silacyclopropene to Donor-Supported Silacyclopropenylium Cations
作者:Shenglai Yao、Yun Xiong、Christoph van Wüllen、Matthias Driess
DOI:10.1021/om801178g
日期:2009.3.23
Addition of equimolar amounts of B(C6F5)(3) to the N-heterocyclic silacyclopropenes[LSi(C2H2)](2;L=CH(C=CH2)-(CMe)(2,6-(Pr2C6H3N)-Pr-i)(2)}) affords the first isolable, zwitterionic silacyclopropenylium-boranide compounds 3. Protonation of 2 with the convenient Bronsted acid H(OEt2)(2)B+(C6F5)(4)(-) leads to quantitative formation of the corresponding silacyclopropenylium salt [4-B(C6F5)(4)].
Dichotomic Reactivity of a Stable Silylene toward Terminal Alkynes: Facile CH Bond Insertion versus Autocatalytic Formation of Silacycloprop-3-ene
作者:Shenglai Yao、Christoph van Wüllen、Xiao-Ying Sun、Matthias Driess