查询词典 allylic

The new methods allow a wide range of poly analogs to be obtained in few steps, as the allylic precursors are readily available.

新方法允许范围广泛的聚类似物，以获得在几个步骤，作为烯前体是现成的。

An advantage of the new methods is the utilization of easily accessible allylic amine derivatives as monomer precursors.

一，利用这种新方法是利用方便烯胺衍生物作为单体的前体。

We see the symmetry we have attributed to allylic particles on the basis of the resonance theory; the two ends of each of these molecules are equivalent

我们看到了曾经根据共振论而归因于烯丙基型粒子的对称性，所有这些分子中每个分子的两端都是等性的。

For most of the enones and allylic alcohols, the reaction could be completed within several hours with good yields.

反应无需有机溶剂，对于大部分的烯酮和烯丙基醇反应可以在数小时内完成，产率良好。

It was also found that the resonance effect was more important than the inductive/field effect on the allylic BDE.

进一步分析表明烯丙位BDE受共轭效应比诱导／场效应的影响更为明显。

The immobilized ligands have been applied to the Pd-catalyzed asymmetric allylic alkylation of 1,3-diphenyl-2-propenyl acetate.

这些负载的P-N 配体被应用到Pd催化的、1，3-二苯基-2-丙酸乙酯的烷基化反应中。

A mild and highly efficient ZnCl2-catalyzed direct alkylation of active methylene compounds with benzylic and allylic alcohols has been reported.

报道了ZnCl2催化的活泼亚甲基化合物和苄醇或烯丙醇的直接烷基化反应。

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，值得注意的是这类配体的反应活性都非常高，对于由于催化剂活性低难以在工业上应用的钯催化烯丙基取代反应来说，这无疑是一大喜讯。

Application of 1, 1'-Planar chiral P, N -ligands into palladium-catalyzed allylic substitution

1， 1'-平面手性二茂铁膦氮配体在钯催化烯丙基取代反应中的应用

Reliable bond dissociation energies of various allylic compounds were obtained using compound methods.

使用复合从头算方法系统地获得了一批精确的烯丙位化学键的均裂裂解能。

For a big chunk of credit-card losses; the number of filings (and thus charge-off rates) would be rising again, whether

年美国个人破产法的一个改动使得破产登记急速下降，而后引起了信用卡大规模的亏损。

Eph. 4:23 And that you be renewed in the spirit of your mind

弗四23 而在你们心思的灵里得以更新