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-乙踝耘耐蹬募で橥荆基-α-胺甲跎谙呤悠档己剑基二硫縮烯酮在合成中的應(yīng)用進(jìn)行了深入的研究102av视频在线，如與醛縮合生成α-烯跻患犊雌镁猛基-α-胺甲酰基二硫縮烯酮永久自慰网站喷水，將其作為1，5-雙親電五碳合成子的[5+1]成環(huán)策略等Cao.网站。

Chapter 5: The thermochromism of condensations of aromatic amine with benzaldehyde derivatives were studied.

第五章：研究了苯甲醛縮芳胺類希夫堿衍生物的熱致變色性質(zhì)国产专区精品调教捆绑在线播放，探討了這類化合物的變色機(jī)理。

In this thesis, the emphasis is on the research of synthesis of a novel chiral imidazolium salt and application of chiral/achiral imidazolium salt in catalytic benzoin condensations.

本文致力于手性咪唑鎓鹽離子液體的合成及手性/非手性咪嘩基催化安息香縮合反應(yīng)的研究永久免费AⅤ在线观看。

In this catalyst system, the Knoevenagel condensations of a series of aromatic aldehydes with malononitrile or ethyl cyanoacetate were programmed and a mechanism was postulated as well. When aromatic aldehydes reacted with ethyl cyanoacetate, the corresponding alkenes proved to be E-isomers by 1H NMR.

在該反應(yīng)體系中考察了一系列芳香醛和丙二氰肏屄毛片、氰基乙酸乙酯的縮合反應(yīng)，并推測了Knoevenagel縮合反應(yīng)的機(jī)理又黄又爽又粗又长免费视频，芳香醛與氰基乙酸乙酯縮合產(chǎn)物經(jīng)1H NMR檢測為E式烯烴呦av网站。

These operate in gas condensations in the vicinity of the mysterious star Eta Carinae (one of the most luminous and massive stars of our Galaxy).

這些氣體濃縮經(jīng)營在神秘的星船底座伊塔星（對我們的銀河系中最明亮的恒星和一個）附近。

disproportionative condensations：歧化縮合<作用>

disrotation 反向旋轉(zhuǎn) | disproportionative condensations 歧化縮合<作用> | disproportionation 不均化<作用>;歧化<作用>

disproportionative condensations：歧化縮合

,"disproportionation","不均化;歧化" | ,"disproportionative condensations","歧化縮合" | "*","disrotation","反向旋轉(zhuǎn)"

Too much of what I know of the great philosophers comes secondhand or from condensations：我對偉大哲學(xué)家的了解大多來自于二手資料或簡寫本

Condensation 濃縮 | Too much of what I know of the great philosophers comes secondhand or from condensations. 我對偉大哲學(xué)家的了解大多來自于二手資料或簡寫本. | Aristotle 亞里斯多德(古希臘大哲學(xué)家,科...