Origin of thermodynamic versus kinetic control of allene hydroboration with 9-borabicyclo[3.3.1]nonane and 10(R)-trimethylsilyl-9-borabicyclo[3.3.2]decane.

Origin of thermodynamic versus kinetic control of allene hydroboration with 9-borabicyclo[3.3.1]nonane and 10(R)-trimethylsilyl-9-borabicyclo[3.3.2]decane.
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DOI:
10.1021/ol902364d
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发表时间:
2009-12-03
期刊:
影响因子:
5.2
通讯作者:
Roush WR
Roush WR
中科院分区:
化学1区
文献类型:
--
作者:
Ess DH;Kister J;Chen M;Roush WR

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利用密度泛函理论确定了烯烯与9-硼环[3.3.1]壬烷和10- r -9-硼环[3.3.2]癸烷的硼氢化反应的过渡态,以及衍生的烯基硼烷的[1,3]-硼顺性移位和醛加成反应的过渡态。描述了烯硼氢化步骤中动力学与热力学控制的起源。
Density functional theory was used to locate transition states for hydroboration reactions of allenes with 9-borabicyclo[3.3.1]nonane and 10-R-9-borabicyclo[3.3.2]decane, as well as transition states for [1,3]-boratropic shift and aldehyde addition reactions of the derived allylboranes. The origin of kinetic versus thermodynamic control in the allene hydroboration step is described.
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