您要查找的是不是：
- This work has been focused on the use of copper(I)-mediated anti-SN2’ allylic substitution reactions with non directing leaving groups. 論文提要內容： 在變化的經(jīng)營(yíng)環(huán)境當中，為了生存和發(fā)展，組織必須更靈活、彈性地加以應對。
- That is encouraging for palladium-catalyzed allylic substitution reactions which is difficult to use in industry due to the current low reactivity of catalysts. 而且，值得注意的是這類(lèi)配體的反應活性都非常高，對于由于催化劑活性低難以在工業(yè)上應用的鈀催化烯丙基取代反應來(lái)說(shuō)，這無(wú)疑是一大喜訊。
- Application of Chiral Ferrocene Ligands in Asymmetric Palladium Catalyzed Allylic Substitution Reactions 二茂鐵配體在不對稱(chēng)烯丙基取代反應中的應用
- Amines can engage in nucleophile substitution reaction with alky. 胺能參加與鹵代烷的親核取代反應。
- The progress in synthesis of chiral phosphinamine ligands is reviewed. Their applications in asymmetric allylic substitution, asymmetric 1, 4-conjugate addition and asymmetric hydroboration are described. 摘要本文較為詳細地綜述了軸向手性膦氮配體合成及其在不對稱(chēng)烯丙基取代反應、不對稱(chēng)1,4-共軛加成反應及不對稱(chēng)硼氫化反應中的應用。
- It is very difficult to sulfonate PES by electrophilic aromatic substitution reaction. 同時(shí)通過(guò)改變氯磺酸與聚醚砜的摩爾比,可以對反應進(jìn)行控制。
- Abstract Quaternarization is an important SN2 nucleophilic substitution reaction;solvent has remarkable effect on it. 摘要 季銨化反應是一類(lèi)重要的SN2親核取代反應，溶劑對該反應的影響很顯著(zhù)。
- The substitution reaction of 1.14 of CM-SPG displayed no significant inhibition efficacy. 取代度為1.;14的羧甲基化裂褶多糖則未表現出抑瘤作用。
- The aromatic electrophilic substitution reaction was studied using NMR for the first time. 首次采用NMR研究芳基親電取代反應。
- Compound 5 is synthesized through Frieldel-Crafts reaction, Grignard reaction and substitution reaction from compound 1 which serves as starting materials. 以化合物1為起始原料通過(guò)付克反應、格氏反應和取代反應，得到最終產(chǎn)物化合物5。
- Allylic substitution and the allyl radical 烯丙基取代和
- In the substitution reaction of nucleophilic, whatever we use S_N1 or S_N2 reaction course, the rate of reaction is the most rapid. 在親核取代反應中;無(wú)論按S_N1歷程還是S_N2歷程,烯丙式鹵代烴的反應速度都是最快的。
- Two new polyorganophosphazenes containing carbazolyl side groups were obtained from poly((dichlorophosphazene)) via nucleophilic substitution reaction. 利用聚氯磷腈的親核取代反應合成了2種咔唑全取代的有機聚磷腈高分子材料,對其結構進(jìn)行了表征。
- The Cl-EPR was obtained by chloride substitution reaction between chloride gas and EPR, and then coupling with anionic living polystyrene. 然后將用陰離子活性聚合制備的活性聚苯乙烯與之進(jìn)行大分子偶聯(lián)反應，依靠與電負性鹵素原子相連的主鏈碳和增長(cháng)的陰離子活性中心間的親核反應制得乙丙橡膠-苯乙烯接枝共聚物。
- According to previous research work, the sulfoacetic acid disodium salt was synthesized by a nucleophilic substitution reaction in this paper. 本論文在總結前人研究工作的基礎上,采用親核取代反應合成了磺酸乙酸鈉。
- The conjugated double bond in tung oil molecular with high activity can take place substitution reaction with one of ortho or para hydrogens of phenol. 桐油的共軛雙鍵具有極強的反應活性，易與苯酚芳環(huán)上鄰或對位的活性氫發(fā)生傅氏取代反應。
- IRC calculation of the TCB substitution reactions was also performed. 同時(shí)對TCB取代反應進(jìn)行了IRC計算。
- Two series of sulfonated poly (ether ether ketone) s based on tert-butylhydroquione and o-methyl-hydroquione were synthesized via aromatic nucleophilic substitution reaction. 摘要以特丁基對苯二酚和鄰甲基對苯二酚分別制備兩個(gè)系列磺化聚醚醚酮。
- The intramoleculat substitution reaction is reversible.In the atmosphere of CO,the tetradentated complex will recover to bidentate complex with cis-dicarbonyl. 其分子內取代反應是可逆的 ;在CO氣氛下該結構又能夠回復到二配位結構.
- Two series of sulfonated poly(ether ether ketone)s based on tert-butylhydroquione and o-methylhydroquione were synthesized via aromatic nucleophilic substitution reaction. 以特丁基對苯二酚和鄰甲基對苯二酚分別制備兩個(gè)系列磺化聚醚醚酮。
