sigmatropic
英
美
网络 σ迁移
双语例句
- By the application of these results, the selection rules for sigmatropic reaction and disproportionation are given.
利用这些结果示出σ迁移反应与歧化反应的选择规则。 - The rearrangement in the reaction is considered as 2,3 anionic sigmatropic shift reaction.
提出该偶联反应的环加成与碳烯反应的竞争机制，认为反应中的重排是[2，3]负离子σ迁移反应。 - Restudy on the Symmetry of Sigmatropic Reaction
σ迁移反应对称性的再分析 - The symmetry of sigmatropic reaction
σ迁移反应的对称性 - Two small groups ( E,σ_v) and ( E, C_2) are used to discuss the whole reaction paths of the suprafacial and the antarafacial sigmatropic reactions respectively.
本文用两个小群（E，σv）和（E，C2）分别讨论σ键迁移的同面反应和异面反应。 - Study of the Stereoselectivity of [ 2,3] Sigmatropic Rearrangements Based on Huckel-Hubbard Theory
[2,3]σ键迁移重排立体选择性的Huckel-Hubbard理论研究 - Accidental degeneracy and selection rule in [ 1, n] sigmatropic rearrangements
[1，n]σ迁移中的偶然简并性和选择定则 - A method for determining Huckel-Hubbard ( H-H) parameters is proposed, and the H-H theory is extended to analyze [ 2, 3] sigmatropic rearrangements including Witting rearrangement, sulphur ylide rearrangement and allylic sulfoxide rearrangement.
本文提出一种确定Hückel-Hubbard（H-H）参数的方法，并将H-H理论首次推广用于Witting重排、硫叶立德重排、烯丙基亚砜重排等[2,3]σ键迁移重排反应的研究。 - There is no symmetry throughout the reaction process of [ 1, n] sigmatropic rearrangements except in the transition state, in which the suprafacial process is of C symmetry, while the antarafacial one is C_2 ( Fig, 1).
[1，n]σ迁移反应除了过渡态外整个反应过程不具对称性。同面过程的过渡态有C1对称性，异面过程的有C2对称性。 - Sigmatropic rearrangement is an important reaction in organic chemistry.
σ重排反应是有机化学中的一个重要反应。