Nitrophenyl ferulate was synthesized in one step without the protection of the hydroxyl of ferulic acid in the presence of1,3 dicyclohexylcarbodiimide ( DCC) as the catalyst.

The results showed that the coordination bonds were formed between Y(ⅲ) ions and phenolic hydroxyl group of PUF.

结果表明，三异丙氧钇中Y（Ⅲ）与PUF中酚羟基上的氧形成了配位键；

互联网摘选

Studies on C-Glycosides& ⅴ. Protection and Deprotection of Phenolic Hydroxy Group in the Synthesis of Substituted Phenols by Grignard Reagents

碳苷研究&Ⅴ.用Grignard试剂合成取代苯酚中酚羟基的保护及脱保护

互联网摘选

Determination for contents of the sulphoacid groups and hydroxy groups in urea modified sulphonating phenolic resin by Conductometric Titration

电导滴定法测定SPU中磺酸基、酚羟基含量

互联网摘选

Content of the active groups as carboxyl and hydroxyl etc. in AFA is somewhat higher than one of lower rank coals FA, but similar to one of soil FA.

羧基、酚羟基等活性官能团含量略高于风化煤和泥炭FA，接近于土壤FA。

互联网摘选

Conclusion The phenol-ketone structure in the CD ring may be responsible for the tetracycline ′ s bone affinity. The conformation that the structure keeps almost in one plane is necessary for its bone affinity.

结论四环素CD环中酚羟基酮结构可能是该类化合物趋骨活性的贡献部分，它们保持在一个平面内的构象是其具有较高趋骨性的必备条件。

互联网摘选

There are large amounts of phenyl hydroxyl groups and a-carbonyl available in the residual lignin of poplar APMP pulps by using' H-NMR spectra analysis.

对杨木APMP浆残余木质素进行了~1H NMR测定，结果表明，残余木质素结构中含有大量的对酚羟基基团和α羰基等结构。

互联网摘选

The carboxylic groups in hemicellulose and the phenolic hydroxyl and ester groups in lignin are the major bonding sites for copper, as confirmed by FTIR.

另外，经FTIR证实，铜与木材作用时，主要是半纤维素中的羧基团和木质素中的酚羟基及芳基酯基与铜成键。

互联网摘选

Synthesis and Anion Recognition Properties of Receptors Bearing Phenolic Hydroxy Groups; Study on the Synthesis and Properties of Gemini Cationic Surfactant

含酚羟基化合物的设计合成及阴离子识别研究羟丙基Gemini阳离子表面活性剂的合成与性能研究

互联网摘选

The number of Phenol hydroxyl more in molecules, the activity of scavenge DPPH radical is stronger.

分子中酚羟基的数目越多，化合物清除DPPH自由基的活性就越强。

互联网摘选

These results similar to those derivatives of compound H2, which showing phenolic hydroxyl of ring A was a key group.

这与化合物H2衍生物的活性结果相似，这些同样说明A环的邻二酚羟基是活性关键基团。

互联网摘选

And the pKa values for the phenoxyl and the water are 5.22 and 9.47 respectively.

配位酚羟基和水分子的离解常数pKa值分别为5.22和9.47。

互联网摘选

The-COOH contents in HA increases, phenolic-OH group decreases and the chemical acidity of acidic functional groups increases when HA is oxidized by nitric acid.

用硝酸氧化能使HA中羧基含量增加，酚羟基减少，酸性功能团活性提高。

互联网摘选

Sodium ferulate ( SF), extracted from DangGui, containing phenolic hydroxyl has the antioxidative activity.

阿魏酸钠（SF）是当归的水溶性单体提取成分，含有酚羟基，具有抗氧化活性。

互联网摘选

Determination of the Content of Phenolic Hydroxyl Groups in Lignin and Pulp with FC-Method

FC法测定木素和纸浆中的酚羟基

互联网摘选

Ten mononuclear complexes with phenolic hydroxyl Schiff base ligands have synthesized.

以酚羟基Schiff碱为配体设计合成了十个单核过渡金属配合物。

互联网摘选

Results indicated that contents of carboxyl, phenolic hydroxyl and sulfonic groups decreased with increased M_w.

研究表明，随着Mw增大，羧基、酚羟基、磺酸基的含量减小。

互联网摘选

Furthermore, the pH effect of photoionization of tyrosine resulting from deprotonation of phenolic hydroxyl group in alkaline solution was demonstrated.

进一步阐明，酪氨酸光电离的pH效应源于其酚羟基的电离。

互联网摘选

Their structures were characterized by elemental analysis, IR, NMR and TG DSC.

经元素分析、IR、NMR和TG－DSC测定，对其结构进行了表征，配合物是通过酚羟基氧原子和锡原子的配键生成的。

互联网摘选

These illustrated that selective inhibition of TOP ⅱα might originate from the middle of the phenolic hydroxyl groups on the B ring.

这些说明选择性抑制TOPⅡα的活性可能来源于中间B环上的酚羟基。

互联网摘选

NMR study of proton dissociation processes of two complexans containing phenolic hydroxyl groups

含酚羟基氨羧络合剂质子解离过程的NMR研究

互联网摘选