We have had the extensive studies on theα-acetyl-α-carbamoyl ketene--acetals and its further applications, for example, their adols condensations with aldehydes giveα-alkenoyl-α-carbamoyl ketene--acetals which can be utilized as the 1,5-bielectronic five-carbon components to react with various binucleophlilic species in a [5+1] annulation.

我們小組在以前的工作中對α-乙跖访赖汗谙撸基-α-胺甲跞巳瞬倩疲基二硫縮烯酮在合成中的應(yīng)用進(jìn)行了深入的研究，如與醛縮合生成α-烯跞巳巳巳瞬僭谙吖基-α-胺甲趸粕?级毛；蚩s烯酮，將其作為1国家a级黄片，5-雙親電五碳合成子的[5+1]成環(huán)策略等亚洲,无码,乱伦。

In this thesis, a convenient and efficient synthesis of highly functionalizeddihydropyrido[2,3-d]pyrimidines via a double [5 + 1] annulation strategy startingfrom easily available α-alkenoyl-α-carbamoyl ketene--acetals 1 and cheapreagents (NH4OAc, DMF, and POCl3) has been developed.

本論文探索了一種簡便有效的合成高度官能化的二氫吡啶并[2，3-d]嘧啶的方法欧美粗暴性交，此方法由易得的α-乙酰基-α-氨基乙鮳ww18禁；蚩s烯酮1和便宜的試劑(醋酸銨成年女人vr免费视频播放，二甲基甲酰胺和三氯氧磷)通過兩步[5 + 1]加成而實現(xiàn)。

Through using Mythylene DinitrAmine as rude product, the knowledge of its reaction properties in different phases have been increased, Through using Mythylene BisAcetAmide as rude product, intermediates which include 1,3-Diacetyl -4,5-dihydroxy -1,3-diazacyclopentane and 1,3-Diacetyl- 4,5-diacetoxy-l,3-diaza cyclopentane have been obtained. 2,4,6,8-tetracetyl- 2,4,6,8-tetraaza bicyclo[3,3,0]octane which can be used to produce Bicyclo-HMX by nitrolysis was also produced. Through using Mythylene BisFormAmide as rude product, intermediates which include 1,3-Diformyl-4,5-dihydroxy- 1,3-diazacyclopentane and 1,3-Diformyl- 4,5-diacetoxy-l,3-diazacyclopentane have been abtained.

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In our research on study chemical reaction of active methylene compounds and brom-acetophenone. Because of brom-acetophenone is compound that contain carbonyl and halogen ,which will take place electrophilic substitution and nucleophilic addition. When active methylene compounds are ethyl acetoacetate and β-diketone, controlling reaction condition, we have found that mono-substitution's production and di-substitution's. production is isolated; active methylene compounds are acetoacetanilide and acetoacetanilide derivate, pyrrolidin-2-one derivants were obtained by substitution and close-ring reaction .but there is no report about it.

本文是讓活潑亞甲基類化合物與溴代苯乙酮發(fā)生化學(xué)反應(yīng)深夜特黄A级毛片免费看网站，由于溴代苯乙酮是含有羰基的鹵代烴結(jié)構(gòu)，它可以發(fā)生親電取代和親核加成反應(yīng)色黄片子女人男人丝袜黑打炮视频，當(dāng)活潑亞甲基類化合物為乙酰乙酸乙酯和β-二酮時亚洲综合色图一区，控制反應(yīng)條件可以發(fā)生單取代和雙取代兩種產(chǎn)物；當(dāng)活潑亞甲基類化合物為乙酰乙酰芳胺類化合物來反應(yīng)時在线亚洲黄色中文字幕视频，溴代苯乙酮中的羰基與氨基會發(fā)生分子內(nèi)的關(guān)環(huán)反應(yīng)生成吡咯烷-2-酮衍生物综合精品视频一区二区，這在以前的研究中是沒有發(fā)現(xiàn)的。

They are 4-(2- hydroxy-3-butynlenoxy) benzoic acid (1, WA), 5-chloro-7, 8-dihydroxy-7-methyl- 6-oxo-3- [ -3, 4-dihydroxy-3, 5-dimethyl-l-heptylene] -1H-8, 8a-dihydrobenzo [2, 3-c] pyran (2, WB),-2-(2-methyl-2-dibutene diamido)-2-butenoic acid (3, B5262), 3, 4-dihydro-9, 10-dihydroxy-7-methoxy-3-methyl-1H-naphtho [2, 3- c] pyran-1-one (4, A73 semi-Vioxanthin), 8, 8'-bis (6, 9-dioxo-3,4-dihydro-10- hydroxy-7-methoxy-3-methyl-1H-naphtho [2, 3-c] pyran-1-one)(5, A122 Xanthomegnin), 2, 5-dioxo-3a-hydroxymethyl-3, 3a, 6, 6a-tetrahydro-furo [2, 3-b] furan (6, 1003-2), 7-acety1-5-chloro-6, 8-dioxo-7-methyl-3- [ -3, 5-dimethyl-1, 3- diheptylene] -4aH-benzo [2, 3-c] pyran (7, M2-2 sclerotiorin), respectively.

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When the catalyst was triethylamine, the water produced in condensation of isopropanolamine or ethanolamine and butanone was removed with benzene by water segregator, then the dichloroacetyl chloride was dropped.

利用異丙醇胺一级黄色网址、乙醇胺色色色色欧美色、丁酮和二氯乙酰氯為原料60后老熟妇乱子伦视频，分別合成了兩種除草劑安全劑Ⅰ∶3-二氯乙酰基-2自慰一区二区，5-二甲基-2-乙基-1，3-噁唑烷和Ⅱ∶3-二氯乙跻患蹲鯽爰片久久毛片A片高潮；?2-甲基-2-乙基-1欧美熟妇性爱A片在线A片视频，3-噁唑烷。

Synthesis of Antidote of N-Dichloroacetyl-2-methyl-1-oxa-4-aza-spiro-4.4-nonane BI Hong-mei, ZHANG Jin-yan, LIANG Ying, SHEN Yong (College of Arts and Sciences Heilongjiang August First Reclamation University, Daqing 163319, Heilongjiang, China) Abstract: N-Dichloroacetyl-2-methyl-1-oxa-4-aza-spiro-4.4-nonane was synthesized by one pot method with isopropanolamine, cyclopentanone and dichloroacetyl chloride. The optimum reaction conditions obtained are as follows:the proportion in moles of the above materials is 1∶1∶1.2, reaction solvent is toluene, reaction temperature is -15 to -10 ℃,reaction time is 3 h, under the optimum condition, the yield of the compound is 50.0%.

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Experiments show the maximum absorption wavelength of 1,1 diactyl ferrocene and 1,1 DiN, N glucosan...

測定了 1 ，1 -二乙跖访酪患杜访酪患对谙卟サ缬埃基二茂鐵久久人妻精品99、葡胺糖丙酰二茂鐵的最大吸收波長，分別是 45 6nm和 346nm国产在线精品免费一区。

In the third chapter, the synthesis of5-[(1"S)-1",2"-diacetyl-oxyethyl]-1-phenylpyrazol-3-carboxaldehyde oxime(2) from5-[(1"S)-1",2"-diacetyl-oxyethyl]-1-phenylpyrazol-3-carboxaldehyde(1) and phenyl-hydrazine were introduced firstly. The synthesis of nine dioxapyrrolino[3,4-c]pyrazoles containing chiral pyrazolyl moiety(6a-i) from 2 with N-substituted-phenylmaleimide by nonmetal oxidant IBD-initiated intermolecular 1,3-dipolarcycloaddition was described in detail.

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The results showed 3 types of aluminum compound prepared in this paper all had good poison protection effectiveness on such impurities as stannous chloride,lead oxide,sodium hydrogen sulfate,and so on.Moreover,the mechanism of the poison of catalyst was also discussed.

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dibutyl acetamide：二丁基乙酰胺

dibuty phosphate 磷酸二丁酯 | dibutyl acetamide 二丁基乙酰胺 | dibutyl butylphosphonate 丁基膦酸二丁酯

diacaustic：折光/折射散焦線

diabrosis /潰破/ | diacaustic /折光/折射散焦線/ | diacetamide /二乙趸粕蘼朐谙呤悠担基胺/

acetamido; acetamino：醋酰胺基;乙酰胺基

亞乙烷合萘基;亞二氫苊基 acenaphthenylidene | 醋酰胺基;乙酰胺基 acetamido; acetamino | 乙炔基 acetenyl;ethynyl

azoformamide; azodicarbonamide：偶氮[二]甲酰胺

偶氮二(苯基乙基)醚;二乙氧基偶氮苯 azodiphenetole; azophenetole | 偶氮[二]甲酰胺 azoformamide; azodicarbonamide | 吡咯 azole; pyrrole

azodiphenetole; azophenetole：偶氮二(苯基乙基)醚;二乙氧基偶氮苯

偶氮[二]甲酸 azodicarboxylic acid; azoformic acid | 偶氮二(苯基乙基)醚;二乙氧基偶氮苯 azodiphenetole; azophenetole | 偶氮[二]甲酰胺 azoformamide; azodicarbonamide

diacetamide：二乙豕镀任锸悠担基胺

diacesalyl 雙醋水楊酸 | diacetamide 二乙酰基胺 | diacetanilide 二乙酰苯胺

fulminuric acid：雷尿酸;異氰尿酸;氰基硝基乙酰胺

雷酸 fulminic acid | 雷尿酸;異氰尿酸;氰基硝基乙酰胺 fulminuric acid | 富瓦烯;雙環(huán)戊二烯亞基 fulvalene; bicyclopentadienylidene

tartronoyl; tartronyl：羥丙二豕劭垂夥鸦破悠担基;丙醇二鹾么蠛盟檬琅谙呤悠担基

羥丙二跞蘸患兑磺基;丙醇二酰基 tartronoyl; tartronyl | 牛[膽]磺醭鲈谙呱面茫基;胺乙磺鮯e亚洲国产综合在线；?tauryl | 對苯二亞甲基 terephthalal; terephthalyidene

tauryl：牛[膽]磺酰基;胺乙磺跹侵藁仆常基

羥丙二?4小箩利裸体免费视频；?丙醇二酰基 tartronoyl; tartronyl | 牛[膽]磺趸破低揪镁茫基;胺乙磺趼陈呈悠翟谙吖劭矗基 tauryl | 對苯二亞甲基 terephthalal; terephthalyidene

acidhead：吸麥角酸二乙酰胺成癮者, 嗜用迷幻藥者, 癮君子

acidfast || (結(jié)核菌)抗酸的,耐酸的 | acidhead || 吸麥角酸二乙酰胺成癮者, 嗜用迷幻藥者, 癮君子 | acidhydrazide || 酰基肼