查询词典 oxo

However, the rhodium process with oil compounds encounter problems due to the thermal sensitivity of the high boiling point oxo-products, which cannot be isolated from the homogeneous reaction mixture by distillation.

采用~1H-NMR和FT-IR谱分析了油醇的氢甲酰化反应产物，证实了其结构为甲酰基十八碳醇，且甲酰基的位置可以在主碳链的中间或端位。

The absorptions at ~440 nm, 573~590 nm in trinuclear is resigned to oxo-Cr charge transfers.

三核配合物的桥氧到三价铬的电荷迁移大约发生～440、573—590 nm附近。

ABSTRACT: In the presence of sodium t-butoxide and DMSO,ethyl 2-oxocyclopentanecarboxylate was subjected to C-alkylation with 2-(4-bromomethylphenyl)propanoic acid with high regioselectivity to give 2-［4-(1-ethoxycarbonyl-2-oxo-1-cyclopentanylmethyl)phenyl］propanoic acid (4) which was followed by hydrolysis,decarboxylation and salt formation to afford loxoprofen sodium in about 72% overall yield.

在叔丁醇钠和二甲基亚砜的存在下，2-丙酸对2-乙氧羰基环戊酮进行C-烷基化，再经水解脱羧，成盐即得洛索洛芬钠，以2-丙酸计算，总收率为72%。

Test results have demonstrated that oxo-biodegradable plastic produces no immediate or cumulative adverse effects on the soil, whether from the plastic itself or from peroxidants, plasticisers, surfactants, pigments, metals or lubricants.

从试验数据来看，氧化生物降解不会对土壤产生&立即性&或&累积性&的副作用，不管是从塑料本身或其他添加成分来看，这些成分都会被自然生物降解，剩余物质少到不会对土壤有害，而淀粉基产品则不是这样。

This one mode pays close attention to network credence foundation of the businessman very much.

这一模式非常关注商人的网络信用基础。

Cell morphology of bacterial ghost of Pasteurella multocida was observed by scanning electron microscopy and inactivation ratio was estimated by CFU analysi.

扫描电镜观察多杀性巴氏杆菌细菌幽灵和菌落形成单位评价遗传灭活率。