The procedures are described involving a selective Hofmanntype elimination of the 2cyanoethyl groups from the bisimidazolium salts 3 obtained by the reaction of α,ωdihalides 2 with 1Himidazole1propanenitrile 1.
1(2氰乙基)咪唑1与α,ω二卤化合物2反应生成双咪唑钅翁盐3,3在碱的作用下发生选择性Hofmann型消去反应以90。
Using the –~CHR-(CH_2)_3-NFCH_3 (R = H, CH_3, CH_2CF_3, CHO, COCH_3) as the computational model, the two possible intramolecular reactions, nucleophilic substitution on nitrogen and elimination reaction, are studied at the theoretical level of MP2(full)/6-31+G(d,p).
我们在MP2(full)/6-31+G(d,p) 理论水平上,以–~CHR-(CH_2)_3-NFCH_3(R = H, CH_3, CH_2CF_3, CHO, COCH_3)为计算模型,对分子内可能发生的两条反应路径—氮原子上的亲核取代反应及消去反应进行了理论研究。
deghost inverse filter
消除虚反射反滤波器
Remove Wavelet Dispersion in GPR Data by Using Inverse-Q Filter;
利用反Q滤波方法消除探地雷达信号子波频散
Multiple Elimination Study Based on Wavefields Separation between the Reflecting and the Scattering
基于反射、散射波场分离的多次波消除方法研究
Single Phase Unidirectional DART Structure SAW Filter
单向单相分布式声反射结构的声表面波滤波器
two-sided least-squares inverse filters
双边最小平方反滤波器
one-sided least-square inverse filter
单边最小平方反滤波器
backward prediction error filter
反向预测误差滤波器
bundle-integrated-guide-distributed reflector
集束波导分布式反射器
Tuning Coupled Cascaded Bandpass Filter Using Mixed Method of Reflection Coefficient Phase and Group Delay
反射系数相位与群时延混合法调谐耦合级联带通滤波器
The Research on Filering Noises of Biomedical Signals with Digital Filter;
生物信号噪声消除的数字滤波器研究
A technology of tracking filtering in ARM terminal guidance phase
反辐射导弹末制导跟踪滤波技术研究
Study on Using FK Filtering to Extract the Seismic Negative Reflection
基于FK滤波的TSP负反射提取方法研究
Effect of Feedback Filter Tap-Length on Decision Feedback Equalizer
反馈滤波器长度对判决反馈均衡器性能的影响
Research on Induction Logging Deconvolution Filter Design Method
感应测井反褶积滤波器设计方法研究
Numerical simulation of wave run-up and breaking on the ave-absorbing beach and calculation of wave reflection coefficients
消波滩消波的数值模拟与反射系数计算
On Elimination Of Morality Straying In Legal Theory;
消除法律中的道德迷思——波斯纳的反思
Multi-channel Orthonormal Wavelet with Symmetric or Antisymmetric Filter Banks;
具有对称或反对称滤波器组的多通道正交小波
The Principle of CFA and Its Application in the Voltage-Mode Filter;
电流反馈放大器原理及其电压模式滤波器应用