查询词典 etherization

Amphoteric tapioca starch with carboxyl groups was produced via crosslinking, oxidation and etherization reactions. The product was then characterized by means of SEM, XRD and colloid titration, with the preparation mechanism being also investigated.

采用交联、氧化和醚化反应制备羧酸型两性淀粉，通过扫描电子显微镜、X射线衍射、胶体滴定等方法对该淀粉进行表征，并研究了该两性淀粉的合成机理。

This article provided a new route to produce 4-dimethoxy phenethylamine. In basic condition, the product could be obtained through etherization, bromation, Grignard reaction, hydroxyethylation, esterification and Gabriel reaction with phenol as raw material, the overall yield is 45.0%.

提出了合成4-甲氧基苯乙胺的新方法，即在碱性条件下，苯酚首先与硫酸二甲酯反应，再选用高选择性的溴化剂溴化后，经格氏反应、羟乙基化反应和酯化反应，最后经Gabriel反应可以制备目标产物，反应总收率为45.0%。

DS and distribution of DS were improved. The optimized technology was gotten as follows: sodium borate was 8wt%,alkalization temperature 20 alkalization time 90min.The heat-resistance of CMC was also enhanced by adding sodium silicate in alkalization, and adding sodium borate in etherization in the synthesis of CMC. ra was decreased, but the viscosity was significant increased.

综合考 虑对水溶液粘度和取代度及其分布的影响，得到优化了的工艺配方：硅酸钠的加入量浙江人学硕士学位论文为纤维素的10叭%左右，碱化温度为20℃，碱化时间为90min，采用两次加碱法工艺(Zmol%和1 。1 smol%)，醚化阶段加6wt%的四硼酸钠。

MethodsUnder etherization condition,we make laminectomy, dissociate L4-L5 DRG, fix DRG and BSS solution perfuse DRG.

将标本用细钢针固定于记录浴槽底部之硅胶片上，BSS灌流标本，玻璃微电极行细胞内穿刺。

The results shows, drown or etherization to make mouse death, Alcohol-fixed, defatted with 3% potassium dichromate, vitrification with Potassium hydroxide, coloration of bone with Alizarin Red S, the glycerol-ammonia were respectively coloration of cartilage with Alcian blue, vitrification with glycerol which had different concentrations, were the best conditions for making transparent specimen.

结果表明，水淹或乙醚麻醉处死、酒精固定、3%重铬酸钾脱脂、氢氧化钾透明、茜素红硬骨染色、阿利新蓝软骨染色、甘油-氨水漂白、甘油逐级透明的制作方法，获得的透明标本效果最佳。

Methods Starting from 2-chloro-4-nitrophenol and 2- pyridine hydrochlorid, 3-chloro-4-(pyridin-2-ylmethoxy) aniline was obtained via etherization and reduction. The obtained aniline coupled with N-(4-chloro-3-cyano-7-ethoxyquinolin-6-yl) acetamide to give 4-[3-chloro-4-(2-pyridylmethoxy) phenylamino]-3-cyano-7-ethoxy-6-N-acetylaminoquinoline. And then it was deacetylated, followed by reacting with4- but-2-enoyl chloride to yield the target compound neratinib.

以2-氯－4-硝基苯酚和2-氯甲基吡啶为起始原料，经醚化、硝基还原得到3-氯－4-（吡啶－2-甲氧基）苯胺，3-氯－4-（吡啶－2-甲氧基）苯胺与3-氰基－6-乙酰氨基－7-乙氧基－4-氯喹啉反应得到3-氰基－6-乙酰氨基－4-［3-氯－4-（吡啶－2-甲氧基）苯氨基］－7-乙氧基喹啉，3-氰基－6-乙酰氨基－4-［3-氯－4-（吡啶－2-甲氧基）苯氨基］－7-乙氧基喹啉去乙酰保护基后，与-4-二甲氨基－2-丁烯酰氯经酰化反应得到ner-atinib。

The split between the two groups can hardly be papered over.

这两个团体间的分歧难以掩饰。

This approach not only encourages a greater number of responses, but minimizes the likelihood of stale groupthink.

这种做法不仅鼓励了更多的反应，而且减少跟风的可能性。