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- Methods and results:Through acylation,Friedel Crafts reaction,reduction,hydrolysis,condensation and oxidation,the title compound was prepared with a total yield of 50.7%. 方法:以庚二酸單乙酯為原料;經(jīng)酰氯化、傅克?；?、還原、水解、縮合及氧化反應合成塞曲司特。結果:塞曲司特的總產(chǎn)率為50.;7%25。
- The antiarrhythmic drug ibutilide fumarate was synthesized from aniline by methylsulfonylation, Friedel Crafts reaction, condensation, reduction and salification with an overall yield of 44%. 以苯胺為起始原料,經(jīng)甲磺?；?、傅克反應、縮合、還原和成鹽反應等5步合成了抗心律失常藥富馬酸伊布利特,總收率44%25(以甲磺酰苯胺計)。
- The title compound was synthesized from 2,4 difluoroaniline by five reactions such as arylation,Friedel Crafts acylation, Baeyer Villiger reaction,saponification and carbonation. 研究了以2，4?二氟苯胺為原料，經(jīng)芳烴偶聯(lián)反應、傅－ 克?；磻?、拜耳－ 維利格反應、水解反應、羧化反應來(lái)合成氟苯水楊酸這一工藝路線(xiàn)。
- Three phenylalkyl substituted hydroquinones were synthesized from 1,4 dimethoxybenzene by Friedel Crafts acylation, Huang Minlon modification reduction and cleavage of ether bond. 以1,4-二甲氧基苯為原料,經(jīng)傅氏?；磻?、黃鳴龍改良還原、醚鍵的斷裂三步反應合成了3個(gè)苯烷基對苯二酚。
- Diflunisal was prepared from 2,4 difluoroaniline via biphenylation,Friedel Crafts acylation,Baeyer Villiger rearrangement,hydrolysis and carboxylation. The overall yield was 38.4%. 以 2 ;4-二氟苯胺為起始原料 ;經(jīng)聯(lián)苯化作用、Friedel-Crafts?；磻?、Baeyer-Villiger重排、水解和羧基化作用 5步反應制得 2′;4′-二氟 -4-羥基 -(1 ;1′-聯(lián)苯 ) -3 -羧酸 ;總收率可達 3 8.;4%25
- Keywords acetylpyrrole;Friedel Crafts reaction;basic hydrolysis; 乙?；量?傅-克?；磻?堿式水解;
- Keywords poly（aryl ether ketone ketone）;3 methyldiphenyl ether;Friedel Crafts actlation; 聚醚酮酮;3-甲基二苯醚;傅-克?；磻?
- A cloud is a condensation of water vapour. 云是由水蒸汽凝縮而成的。
- He graduated from a school of crafts and arts. 他畢業(yè)于一所工藝美術(shù)學(xué)校。
- His shaving mirror was covered with condensation. 他的剃須鏡上有一層小水珠。
- A man who practices a craft with great skill. 手藝人熟練使用某種手藝的人
- The damaged craft was hauled to the hangar. 損壞了的飛機被拖進(jìn)了飛機庫。
- He learned his craft from an old master. 他從一位老匠人那兒學(xué)得他的手藝。
- A brief summary; a condensation. 概要簡(jiǎn)潔的概括; 總結
- An outstanding work of art or craft. 一個(gè)引人注目的藝術(shù)品或工藝品
- friedel crafts reaction 弗里德?tīng)?克拉夫特反應
- Hundreds of small craft accompany the liner into harbour. 數百只小艇隨同這艘班輪駛入港灣。
- By crafts the gambler tricked them out of all their money. 那個(gè)賭徒用詭計贏(yíng)去了他們所有的錢(qián)。
- Inferior craft; felt inferior to his older sibling. 低等的手工藝品; 感到比他的兄妹們低一等
- The beach defences were softened up before the landing craft was in. 在登陸艇駛入以前，海灘防御工事已遭削弱。
