 |
 |
 |
 |
 |
 |
||
 |
 |
 |
 |
 |
| 3 | 1/1 | 返回列表 |
| 查看: 816 | 回復(fù): 2 | ||
| 本帖產(chǎn)生 1 個 翻譯EPI ，點(diǎn)擊這里進(jìn)行查看 | ||
wpsword8291金蟲 (正式寫手)
|
[求助]
求助一段德文翻譯
|
|
|
見圖片，謝謝高人指點(diǎn)！ 1.GIF |
回復(fù)此樓» 猜你喜歡
306求調(diào)劑
已經(jīng)有5人回復(fù)
-
求調(diào)劑一志愿海大，0703化學(xué)學(xué)碩304分，有大創(chuàng)項(xiàng)目，四級已過
已經(jīng)有9人回復(fù)
-
289材料與化工（085600）B區(qū)求調(diào)劑
已經(jīng)有4人回復(fù)
-
一志愿武理材料工程348求調(diào)劑
已經(jīng)有6人回復(fù)
-
08工科 320總分 求調(diào)劑
已經(jīng)有11人回復(fù)
-
一志愿華中農(nóng)業(yè)071010，總分320求調(diào)劑
已經(jīng)有6人回復(fù)
-
323求調(diào)劑
已經(jīng)有5人回復(fù)
-
284求調(diào)劑
已經(jīng)有5人回復(fù)
-
317求調(diào)劑
已經(jīng)有16人回復(fù)
-
287求調(diào)劑
已經(jīng)有9人回復(fù)
barbarasong
鐵桿木蟲 (正式寫手)
- 翻譯EPI: 5
- 應(yīng)助: 15 (小學(xué)生)
- 金幣: 8236.6
- 紅花: 3
- 帖子: 303
- 在線: 194.9小時
- 蟲號: 1108526
- 注冊: 2010-09-26
- 性別: GG
- 專業(yè): 有機(jī)合成
【答案】應(yīng)助回帖
★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★
wpsword8291: 金幣+20, 翻譯EPI+1 2013-03-19 15:31:01
wpsword8291: 金幣+20, 翻譯EPI+1 2013-03-19 15:31:01
|
Example 2 （Beispiel 2） 1-Phenyl-2-(a,a-dimethyl-ethanolamine)-ethanol (Formula !b) In a 3-necked flask with stirrer and addition funnel, 2mol 2-methyl-2-aminopropanol and 0.2mol H2O is charged. Under stirring, 1mol 2-phenyloxirane is dosed in. The reaction mixture is heated in a water bath until solidification. And then cooled by ice, ethanol os added and heated to reflux for several hours. During addition of light Petroleum ether, solid product is precipited. It can be crystallized in boiling water. m.p. is 142-143℃；m.p. of its picrate is 165-168℃。 |
2樓2013-03-19 15:00:05
barbarasong
鐵桿木蟲 (正式寫手)
- 翻譯EPI: 5
- 應(yīng)助: 15 (小學(xué)生)
- 金幣: 8236.6
- 紅花: 3
- 帖子: 303
- 在線: 194.9小時
- 蟲號: 1108526
- 注冊: 2010-09-26
- 性別: GG
- 專業(yè): 有機(jī)合成
【答案】應(yīng)助回帖
★ ★ ★ ★ ★ ★ ★ ★ ★ ★
wpsword8291: 金幣+10, ★★★很有幫助 2013-03-19 15:31:11
wpsword8291: 金幣+10, ★★★很有幫助 2013-03-19 15:31:11
|
Example 3 （Beispiel 3） 2-phenyl-5,5-dimethyl-morpholine (Formula IIb) One part by weight of product from Example 2, is dissolved in 1.5mL/g (vaolume percent) conc.H2SO4. The mixture is stirred over night at room temperature, and then poured into ice. The solution is adjusted with NaOH to pH>7, and extracted with chloroform. The organic solution is distilled off, and then the residual oil is dissolved in HCl/alcohol solution. The HCl salt of 2-phenyl-5,5-dimethyl-morpholine is obtained. m.p is 165-168℃。m.p. of its picrate is 176-179℃。 |
3樓2013-03-19 15:06:28
相關(guān)版塊跳轉(zhuǎn)
我要訂閱樓主 wpsword8291 的主題更新
| 3 | 1/1 | 返回列表 |
| 最具人氣熱帖推薦 [查看全部] | 作者 | 回/看 | 最后發(fā)表 | |
|---|---|---|---|---|
|
[考研] 一志愿 西北大學(xué) ，070300化學(xué)學(xué)碩，總分287，雙非一本，求調(diào)劑。 +3 | 晨昏線與星海 2026-03-20 | 3/150 |
|
|---|---|---|---|---|
|
|
[考研] 能源材料化學(xué)課題組招收碩士研究生8-10名 +5 | 脫穎而出 2026-03-16 | 17/850 |
|
|
[考研] 311求調(diào)劑 +3 | 26研0 2026-03-20 | 3/150 |
|
|
|
[考研] 384求調(diào)劑 +3 | 子系博 2026-03-22 | 4/200 |
|
|
|
[基金申請] 山東省面上項(xiàng)目限額評審 +4 | 石瑞0426 2026-03-19 | 4/200 |
|
|
|
[考研] 333求調(diào)劑 +5 | 87639 2026-03-21 | 7/350 |
|
|
|
[考研] 313求調(diào)劑 +4 | 肆叁貳壹22 2026-03-19 | 4/200 |
|
|
|
[基金申請]
學(xué)校已經(jīng)提交到NSFC，還能修改嗎？
 40+4
|
babangida 2026-03-19 | 9/450 |
|
|
|
[考研] 307求調(diào)劑 +10 | 冷笙123 2026-03-17 | 10/500 |
|
|
|
[考研] 085700資源與環(huán)境308求調(diào)劑 +12 | 墨墨漠 2026-03-18 | 13/650 |
|
|
|
[考研] 一志愿華中科技大學(xué)，080502，354分求調(diào)劑 +5 | 守候夕陽CF 2026-03-18 | 5/250 |
|
|
|
[考研] 一志愿重慶大學(xué)085700資源與環(huán)境專碩，總分308求調(diào)劑 +3 | 墨墨漠 2026-03-18 | 3/150 |
|
|
|
[考研] 330求調(diào)劑 +4 | 小材化本科 2026-03-18 | 4/200 |
|
|
|
[考研] 一志愿蘇州大學(xué)材料求調(diào)劑，總分315（英一） +5 | sbdksD 2026-03-19 | 5/250 |
|
|
|
[考研] 0817 化學(xué)工程 299分求調(diào)劑 有科研經(jīng)歷 有二區(qū)文章 +22 | rare12345 2026-03-18 | 22/1100 |
|
|
|
[考研] 廣西大學(xué)家禽遺傳育種課題組2026年碩士招生（接收計(jì)算機(jī)專業(yè)調(diào)劑） +3 | 123阿標(biāo) 2026-03-17 | 3/150 |
|
|
|
[考研] 材料學(xué)碩318求調(diào)劑 +5 | February_Feb 2026-03-19 | 5/250 |
|
|
|
[考研] 0703化學(xué)調(diào)劑 +4 | 18889395102 2026-03-18 | 4/200 |
|
|
|
[考研] 一志愿福大288有機(jī)化學(xué)，求調(diào)劑 +3 | 小木蟲200408204 2026-03-18 | 3/150 |
|
|
|
[考研] 334求調(diào)劑 +3 | 志存高遠(yuǎn)意在機(jī)?/a> 2026-03-16 | 3/150 |
|