O-Alkylation of Chitosan under Microwave Irradiation 微波作用下壳聚糖的O-烷基化反应
We firstly achieved the O-alkylation of phenols using grinding method catalyzed by organic bases including the derivatives of cinchonine. 在有机碱(包括辛可宁的衍生物)的催化下,首次用研磨法进行了酚类化合物的O-烷基化反应。
Preparation of Miconazole and Econazole by PEG-400 Catalyzed Reactions of Tandem N-and O-Alkylation 咪康唑和益康唑的PEG-400连续催化N-和O-烷基化反应制备
The O-alkylation of S (-)-1,1 '-bis-2-naphthol [ S (-)-1], or R (+)-1 with various alkyl halides in the presence of potassium fluoride hydrate was studied. 本文报导在KF·2H2O促进下,S-(-)-或R-(+)-1,1′-联-2-萘酚(1)和卤代烷进行的O-烷基化反应,得到构型保持的产物。
The higher fatty amine/ formaldehyde modified lignin quaternary ammonium salts ( KL-F-HFA-QASs) cationic asphalt emulsifiers were made by the Mannich reaction and O-alkylation reaction. The effects of some factors on the Mannich reaction were discussed. 采用温和的Mannich反应和O-烷基化反应,制得了高级脂肪胺/甲醛改性木质素季铵盐阳离子沥青乳化剂,对影响Mannich反应的一些因素进行了探讨。
We also studied the mechanism carefully and found that under radical cation induced conditions only O-alkylation reaction occurred and no N-alkylation products were isolated. 研究发现在自由基正离子引发下肟类化合物只发生O-烷基化反应,没有N-烷基化产物的生成。
In this paper, we carefully studied the Mannich reaction between ketones and aromatic imines induced by radical cation and iodine. O-Alkylation of oximes was also achieved under radical cation induced conditions. 本论文研究了在自由基正离子诱导以及碘催化下酮类化合物与芳香亚胺的Mannich反应;同时,还研究了自由基正离子诱导肟类化合物的O-烷基化反应。