The yields of aldehydes produced in this sequential process are comparable to the two-step method.

用此法制得的醛国产精品黄色网站大全，其產(chǎn)率與用兩步法可制得的產(chǎn)率不相上下。

According to the positions of a carbonyl group in the hydrocarbon chain, carbonyl compounds divided to aldehydes and ketones.

P112根據(jù)羰基在碳?xì)滏溨械奈恢茫驶衔锓譃槿┖屯獌深?lèi)。

Objective To study the influence of aldehydes and tannic acid on soft capsules, approach how to prevent soft capsules from delayed disintegration.

目的 研究醛類(lèi)及鞣酸對(duì)軟膠囊崩解性能的影響80老女人乱婬视频，探討改善軟膠囊崩解遲緩的措施。

Knoevenagel condensations of aromatic aldehydes with active methylene compounds were performed in the presence of room temperature ionic liquid without any additional volatile organic solvents.

6利用室溫離子液體作催化劑欧美黄片天天在线观看，在無(wú)另加有機(jī)溶劑的條件下717电影网理论片我不卡，考察了芳香醛和活潑亞甲基化合物的Knoevenagel縮合反應(yīng)。

High yields of indazoles (70-85%) were obtained in the condensations of aldehydes with various substitution patterns with the exception of those possessing electron-donating groups in the 5-position and the unsubtituted o -fluorobenzaldehyde.

高產(chǎn)量吲唑(1970年至1985年%)獲得了各種替代方式醛縮合的例外擁有電子基團(tuán)的5位和unsubtituted 鄰氟苯甲醛男女人精品视频站在线观看。

Chaper 3: Aldol condensations of aromatic aldehydes with ketones under solvent-free condition to synthesize α,β-unsaturated ketones in good to excellent yields using PEG400 and powdered anhydrous K2CO3 as catalysts at 90℃or 120℃were described.

第三章：在無(wú)溶劑條件下一级黄色视频免费观看，由PEG400 和無(wú)水K2CO3催化芳香醛與酮的Aldol 縮合反應(yīng)合成α，β亚洲色图五月天综合？不飽和酮俄罗斯网站人人草人人干在线观看，得到較高的收率。

Quaternary ammonium compound category, ethylene oxide, composite aldehydes, chelating agent, surfactant, the activity factor.

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Category quaternary ammonium compound, ethylene oxide, composite aldehydes, chelating agent, surfactant, the activity factor.

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Quaternary Ammonium Compound, ethylene oxide, composite aldehydes, chelating agents, surfactants, active factor.

復(fù)合季銨鹽類(lèi)二级三级毛片、環(huán)氧乙烷、復(fù)合醛類(lèi)在线观看无码AV直接进入、螯合劑一级有乳奶水毛片免费、表面活性劑、活性因子98K免费毛片。

Ethylene oxide, composite aldehydes, quaternary ammonium compound category, surfactant, the activity factor, the chelating agent.

環(huán)氧乙烷操逼公司、復(fù)合醛類(lèi)、復(fù)合季銨鹽類(lèi)无码精品视频在线观看网址、表面活性劑91网国产、活性因子、螯合劑欧美性交播播。