Part 2. Annulation reaction of 3, 4-dichlorocoumarin (1) and 3, 4-dichloromaleimide (8) by a new general annulation strategy developed in this group with 2-phenylbenzofuran (15), 3-phenylbenzofuran (16), 2, 5-diphenyloxazole (17), 2, 5-diphenylthiazole (18), 2-methyl-4-phenylthiazole (19) and 2, 3-dimethoxy-1, 3-butadiene (40) were investigated.

二久久久久久久精品九精品。在本課題組前一階段提出的從二氯代環(huán)烯酮與1日韩福利看片，1-二芳基乙烯的光化反應(yīng)以及光化反應(yīng)中得到的環(huán)丁烷產(chǎn)物的連續(xù)電環(huán)化反應(yīng)對3美国韩国黄色自拍偷拍片，4-二氯馬來酰亞胺以及3色黄色视频在线免，4-二氯香豆素進行增環(huán)反應(yīng)的工作基礎(chǔ)上日韩精品免费乱码福利视频，研究了3，4-二氯香豆素（1）和3超碰在线人妻露脸，4-二氯馬來酰亞胺（8）與5個α-苯基取代的環(huán)烯烴2-苯基苯并呋喃（15）91精品国产自产在线观看48页，3-苯基苯并呋喃（16），2亚洲特黄av，5-二苯基噁唑（17）人人扣B人人干B视频免费播放，2国产精品色在线播放，5-二苯基噻唑（18）久久久久夜色精品国产老牛，2-甲基-4-苯基噻唑（19）十八岁以下禁止观看的网站，以及一個丁二烯——2久久资源综合，3-二甲氧基丁二烯（40）進行的芳香族增環(huán)反應(yīng)。

The different substituents on the aryl ketones determined the different base used in the reactions.

芳基酮上的取代基決定了合成中所用堿的類型黄色视频天免费看一一丝袜。

In the IUPAC system, alkyl and aryl substituents and many functional groups are named as prefixes on the parent.

在系統(tǒng)命名法中，烷基99伦乱视频、芳基取代基和許多官能團被命名為前綴并放在一個母體的前面

Aminobenzoic acid was used to synthesize 4'-methyl-2-cyanobiphenyl, which was one of medicine intermediates, by diazotization, acylation, substitution, and dehydration.

以鄰氨基苯甲酸為起始原料，經(jīng)重氮化手机一级在线视频、芳基化、取代和脫水等步驟合成藥物中間體4'-甲基－2-腈基聯(lián)苯特黄真人免费AAA级毛片。

New compounds of the type of N--N'-(2,4-dichlorophenyloxyacetyl)-semicarbazides were synthesized by a series of reactions of preparing organic isocyanates by Curtius rearrangement with 2,4- dichloro aryloxyacetic acid hydrazide using one-pot procedures.

以芳香取代酸為原料中文字幕av人妻一本二本，用Curtius重排的方法合成異氰酸酯女生一区二区三区视频网站，直接與291人妻论坛社区，4-二氯苯氧乙酰肼作用，一鍋法合成了4種N-取代芳基-N'-(2精品久久国产精品99国产，4-二氯苯氧乙酰基)氨基脲類化合物黄片中文字幕视频。

Among the arylazides, fluorinated aryl azides are exceptionally promising because upon photoactivation, they lead to much more efficient photolabeling than non-fluorinated arylazides.

目前，盡管已經(jīng)有一些磷脂光敏探針用于膜蛋白研究的報道，但是還沒有使用以上兩種芳基疊氮基團作為光敏基團的報道欧美一区永久视频免费观看，在磷脂的極性頭基上引入光敏基團的報道也極少見。

Thirdly, The preparation of 3-aryl-5-substituted-ethenyl isoxazoles and l-isoxazolyl-2-isoxazolinyl substituted-ethenes was developed through 1, 3-dipolar cycloaddition of nitrile oxides,α-alkylation reaction and another 1, 3-dipolar cycloaddition of nitrile oxides based on polystyrene-supported propargyl selenide.

三影音先锋日韩在线资源、從聚苯乙烯負載的炔丙基硒醚出發(fā)，經(jīng)過腈氧化物的1中文字幕日本黄色视频，3-偶極環(huán)加成反應(yīng)、α-烷基化反應(yīng)和腈氧化物的1欧美激情a片免费专区，3-偶極環(huán)加成反應(yīng)固相分別合成了3-芳基5-取代--乙烯基異噁唑和1—異噁唑—2—異噁唑啉取代的-乙烯。

Under ultrasonic radiation,four single substituted arylboronic acid were synthesized through the reaction of trisubstituted borate and halogenated hydrocarbon induced by iodine.

在超聲條件下超碰在线免费公开干，以碘為催化劑，利用硼酸酯與鹵代芳烴月综合网、金屬鎂粉合成了4種單取代芳基硼酸无码网站色哟哟在线观看。

A one-step method for the synthesis of aromatic indolizine derivatives byintramolecular 1,5-dipolar cyclization reaction of 2-(2-arylethenyl)pyridinium N-ylidesin the presence of an oxidant has been studied for the first time. In the presence ofelectron-deficient olefins, however, 2-(2-phenylethenyl)pyridinium N-ylides underwent1,3-dipolar cycloadditions and then aromatized in situ by TPCD to produce indolizinederivatives, indicating 1,3-dipolar cycloaddition proceed more readily than 1 ,5-dipolarcyclization in these conditions. Pyridinium disubstituted N-ylides, readily obtainedfrom corresponding pridinium and β-chlorovinyl ketone, underwent thermalintramolecular 1,5-dipolar cyclization to give indolizine derivatives easily.Indolizinecarbaldehyde derivatives were synthesized starting from 2-pyridinecarbaldehyde in four-steps involving 1,3-dipolar cycloaddition reaction.

本文首次研究了2-(2-芳基乙烯基)吡啶N-葉立德在氧化劑存在下的分子內(nèi)1，5-偶極環(huán)化反應(yīng)欧美极品A片小视频在线看，采用一鍋法合成了中氮茚衍生物美女张开腿被弄到高潮视频；研究了這些N-葉立德的1，5-偶極環(huán)化和1久久一级黄色毛片，3-偶極環(huán)加成反應(yīng)的選擇性黄色毛片免费看永久，發(fā)現(xiàn)當(dāng)有缺電子烯烴存在時，優(yōu)先進行1国产三级精品三级在线区，3-偶極環(huán)加成反應(yīng)全面黄片，而不再發(fā)生分子內(nèi)1，5-偶極環(huán)化反應(yīng)性欧美日韩一区二区；由β-氯乙烯酮方便地得到了烯丙基N-葉立德又硬又粗又黄的视频，他們在加熱時進行分子內(nèi)1，5-偶極環(huán)化反應(yīng)而得到中氮茚衍生物精品一区在线播放；由2-吡啶甲醛為起始原料中国老女人老妇女刺激视频，通過1性感带AV电影在线免费观看，3-偶極環(huán)加成反應(yīng)等四步反應(yīng)，得到了重要的中氮茚甲醛衍生物在线免费91，這些反應(yīng)都具有條件溫和和操作簡便的特點，是合成中氮茚衍生物的新方法欧美精品熟妇。

In the presence of Pd_2, NaOMe, and EtOH, a variety of aryl iodides and aryl bromides were coupled with arylboronic acids smoothly in very short time.

Pd_2作為催化劑，NaOMe作為堿，EtOH作為溶劑嗯啊太深了视频，一系列的碘代和溴代芳烴都能在極短的時間內(nèi)與芳基硼酸反應(yīng)得到相應(yīng)的交叉偶聯(lián)產(chǎn)物。