In the third part, both tandem Michael/Aldol and Michael/Elimination/Michael reactions were designed.

發(fā)現環(huán)酮與不飽和酮酸酯的反應不僅發(fā)生了Michael加成反應羞羞漫画在线观看巨黄，而且還進一步發(fā)生Aldol反應800av凹凸在线观看。

Michael orders the men to put on their bleached coveralls and that he'll be back in a moment. C-Note wants to know where he's going and shouts down the pipes, but Michael is already gone.

Michael叫同伙們把漂白過的制服穿上，他離開一下91av在线观看91，馬上就回來日本强伦奸人妻一区二区。C-Note在管道中大叫，問他要去哪最新无码专区视频在线，但Michael已經離開了印度AV在线网站。

The next thing I knew it was like, ding-dong, Michael's home. We were up something like 12 points with five minutes to go. That's when Michael scored the next 20 points—on me.

但是接下來，Michael Jordan的家門打開了欧美在线视频首页，真正的他走了出來国产精品理论一区，當比賽只剩下5分鐘就要結束的時候，我們領先有12分之多一级a作爱在线视频观看，但是之后Michael Jordan一連拿下20分——都是在我身上取得的人人干人人操人人上人人搞！

I am not a fragment of Michael, I AM Michael.

我不是Michael的片段，我就是Michael日韩一级A片在线高清视频。

Michael yells at Sara to go. Stroker runs up behind Michael as he pushes Sara out the door. Michael dives to the ground and the sniper's bullet strikes Stroker in the head and machine gun fire floods the waiting room.

他將Sara推出門去亚洲最大无码A∨在线观看，這時Stroker跑至Michael的身后，Michael向下猛地一閃欧美熟妇人妻BBBBBⅩXXXX，趴在地上网友自拍日韩经典视频，狙擊手的子彈擊中了Stroker的頭部，機關槍對著等待室一陣瘋狂掃射午夜视频你懂的。

"I told Michael,'Run to the bank. That's your moneymaker,'" Lopes said."If Michael hits, he will be the dominant base stealer in the game. Without question."

"我告訴Michaelwww.99riav22，'盜壘將會是你的搖錢樹'"，Lopes說："如果Michael能打出安打，毫無疑問的他將是比賽中最具有優(yōu)勢的盜壘者婷婷五月丁香在线。"

Keeping their heads low and deep in the brush the eight cons hide feet from the sally port. C-Note tells Michael they need to move, but Michael says they have to wait until all the guards are ahead of them.

八名犯人低著頭国产在线观看www，藏身于灌木叢中，其實他們離監(jiān)獄門口不遠亚洲欧美色图13p。C-Note對Michael說亚洲91在线综合，他們必須要開始逃跑了，但Michael說国产综合视频网，他們必須等到所有的警衛(wèi)都追到前面去一级毛片在我的世界免费网站视频，他們卻在后面慢行。

The chapter two was focused on the samarium diiodide promoted organic reactions and their applications in organic synthesis, firstly, a new synthesis of highly substituted cyclopentadienes from a,β-alkynone promoted by samarium diiodide was investigated and the highly substituted cyclopentadienes were prepared in moderate to good yields under mild conditions. Secondly, the Michael addition and Michael-aldol tandem reaction of diorganyl diselenides or diorganyl disulfides with α,β-alkynones mediated by samarium diiodide were studied and a series of alkenylsulfides and alkenylselenides were prepared in good yields. Then the highly regioselecfive nucleophilic addition of the allylsamarium bromide to α,β-alkynones were explored. We found that the allylsamarium bromide reacts with α,β-alkynones to afford regiospecificly 1. 2-nucleophilic addition products in good yields under mild condition. At last we studied the coupling reaction of aryl halides promoted by NiCl〓/PPh〓/Sm〓.

第二章 研究了二碘化釤亚洲第一区在线观看、金屬釤促進的有機反應：1黄色色色费一八、二碘化釤促進下α，β-炔基酮的偶聯(lián)環(huán)化反應亚洲高清无码91，提供了一種制備多取代環(huán)戊二烯的新方法精品欧美性爱之吧；2、二碘化釤促進下的二硫醚制服丝袜人中文字幕、二硒醚與α久久不卡黄色视频，β-炔基酮的Michael加成反應，為高產率地制備多取代的烯基硫或烯基硒化合物提供了方便可靠的新方法www.欧美.com；3国产91资源小视频、二碘化釤促進下的二硫醚、二硒醚與α久久久久精品超国产，β-炔基酮和醛电影日本公妇在线观看、酮的Michael—aldol串聯(lián)反應，提供了一種一鍋法高產率地制備多取代的含硫的烯丙基醇或含硒的烯丙基醇類化合物的方便可靠的原子經濟性的新方法好妞在线三级片；4超碰首页、烯丙基溴化釤與α，β-炔基酮的高度區(qū)域選擇性的199久久久国产一区二区三区，2-親核加成反應下载黄色一级网站视频；5淫荡的网站、NiCl〓/PPh〓/Sm〓促進的鹵代芳烴的偶聯(lián)反應-一種從各種鹵代芳烴制備聯(lián)苯類化合物的有效方法黄网站色视频免费一级毛片。

Blessed with one of the most exciting new voices in years, Whitney Houston sings the hell out of the pleasant but undistinguished pop-soul tunes on her album, which was put together by a consortium of top producers: Michael Masser, Jermaine Jackson, Kashif, Narada Michael Walden.

被譽為近年來最令人激動的新嗓音之一三级网站在在线观看视频，惠特尼·休斯頓在她的專輯里唱出了令人愉快但毫無特色的流行-靈魂風格的音樂地獄精品日韩妖精视频网站。這張專輯是由一個頂尖制作人團隊拼合在一起的：Michael Masser，Jermaine Jackson日韩欧美一级特黄AAAAA片，Kashif农村妇女户外HDXXXX，Narada Michael Walden狼人狠狠干。

1 Heptane, it was revealed that the Cr〓/ Catsan and ZnCl〓 could catalyze the Michael addition of pyrrole with conjugate olefine at α-position of pyrrole to get mono- or bi-Michael addition product selectively under mild condition in good yield. Totally, forty-six new compounds, including thirty target compounds, were prepared.

在探索7-氮雜橋環(huán)母體的構建方法過程中aaa黄色视频aaa，發(fā)現了Cr〓／Clay和ZnCl〓可有效地催化吡咯的α-位與多種共軛烯烴發(fā)生Michael加成反應一级毛片一级毛毛片免费看，可在溫和的條件下欧美第一黄片，以良好的收率選擇性地得到單或雙Michael加成產物。