 |
 |
 |
 |
 |
 |
||
 |
 |
 |
 |
 |
| 4 | 1/1 | 返回列表 |
| 查看: 907 | 回復(fù): 3 | |||
| 本帖產(chǎn)生 1 個(gè) 翻譯EPI ，點(diǎn)擊這里進(jìn)行查看 | |||
[交流]
幫忙翻譯一段德文（化學(xué)實(shí)驗(yàn)相關(guān)，譯成中文英文都行），比較急謝謝
|
|||
  |
回復(fù)此樓» 猜你喜歡
08工學(xué)調(diào)劑
已經(jīng)有17人回復(fù)
-
340求調(diào)劑
已經(jīng)有4人回復(fù)
-
311求調(diào)劑
已經(jīng)有3人回復(fù)
-
0805 316求調(diào)劑
已經(jīng)有5人回復(fù)
-
食品專碩 一志愿雙一流 328
已經(jīng)有4人回復(fù)
-
材料調(diào)劑
已經(jīng)有6人回復(fù)
-
300分，材料，求調(diào)劑，英一數(shù)二
已經(jīng)有5人回復(fù)
-
求調(diào)劑，一志愿:南京航空航天大學(xué)大學(xué) ，080500材料科學(xué)與工程學(xué)碩，總分289分
已經(jīng)有5人回復(fù)
-
085600材料與化工調(diào)劑
已經(jīng)有13人回復(fù)
-
材料與化工考研調(diào)劑
已經(jīng)有7人回復(fù)
2樓2010-11-01 10:30:25
3樓2010-11-01 13:54:56
jsw79(金幣+50, 翻譯EPI+1):Thanks! 2010-11-01 14:34:03
| general procedure for Nickel(0)-mediated coupling of halomethoxy pyridine to dimethoxybipyridine: To a solution of 7.15g (30mmmol) of NiCl2.6H2O and 31.5g (120mmol) of triphenyl phosphane in 200ml of DMF under nitrogen atmosphere(1bar) is added 1.97g (30mmol) of Zn dust, the reaction mixture is stirred for 1h at 50℃. Subsequently 30mmol of halogmethoxy pyridine ( or the mixture of halomethoxy pyridines) is added and the mixture is stirred for 5-120 h (see Table 1) at 50℃. The reaction mixture is poured into 800ml of half concentrated NH3 and stirred for 1h and the aqueous phase is extracted 3 times with each of 150ml of CHCl3. The combined organic phase was completely evaporated and the residue is taken up in 300ml of CHCl3. The solution is extracted 5 times with each of 100ml of half concentrated HCl. The combined aqueous phase is extracted with 50ml of CHCl3 and subsequently made alkaline with aqueous Na2CO3 solution. The aqueous phase is extracted 4 times with each of 100ml of CHCl3, the combined organic phase was dried with Na2SO4 and concentrated to dryness. The residue is purified chromatographically on silica gel with the eluent MDC/2% MeOH or directly recrystallized from ethanol. |
4樓2010-11-01 14:05:33
相關(guān)版塊跳轉(zhuǎn)
我要訂閱樓主 jsw79 的主題更新
| 4 | 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] 311求調(diào)劑 +3 | 冬十三 2026-03-24 | 3/150 |
|
|---|---|---|---|---|
|
|
[考研] 292求調(diào)劑 +4 | 鵝鵝鵝額額額額?/a> 2026-03-24 | 4/200 |
|
|
|
[考研] 300求調(diào)劑，材料科學(xué)英一數(shù)二 +5 | leaflight 2026-03-24 | 5/250 |
|
|
[考博] 申博26年 +4 | 八6八68 2026-03-19 | 4/200 |
|
|
|
[考研] 一志愿北京化工大學(xué) 070300 學(xué)碩 336分 求調(diào)劑 +7 | vv迷 2026-03-22 | 7/350 |
|
|
|
[考研] 327求調(diào)劑 +5 | prayer13 2026-03-23 | 5/250 |
|
|
|
[考研] 工科0856求調(diào)劑 +5 | 沐析汀汀 2026-03-21 | 5/250 |
|
|
|
[考研] 291 求調(diào)劑 +4 | 化工2026屆畢業(yè)?/a> 2026-03-21 | 5/250 |
|
|
|
[考研] 316求調(diào)劑 +7 | 梁茜雯 2026-03-19 | 7/350 |
|
|
|
[考研] 350求調(diào)劑 +6 | weudhdk 2026-03-19 | 6/300 |
|
|
|
[考研] 263求調(diào)劑 +6 | yqdszhdap－ 2026-03-22 | 9/450 |
|
|
|
[考研] 一志愿中南化學(xué)（0703）總分337求調(diào)劑 +9 | niko- 2026-03-19 | 10/500 |
|
|
|
[考研] 289求調(diào)劑 +7 | 懷瑾握瑜l 2026-03-20 | 7/350 |
|
|
|
[考研] 354求調(diào)劑 +7 | Tyoumou 2026-03-18 | 10/500 |
|
|
|
[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] 296求調(diào)劑 +4 | www_q 2026-03-20 | 4/200 |
|
|
|
[考研] 華東師范大學(xué)-071000生物學(xué)-293分-求調(diào)劑 +3 | 研究生何瑤明 2026-03-18 | 3/150 |
|
|
|
[考研] 22408 344分 求調(diào)劑 一志愿 華電計(jì)算機(jī)技術(shù) +4 | solanXXX 2026-03-20 | 4/200 |
|
|
|
[考研] 294求調(diào)劑材料與化工專碩 +15 | 陌の森林 2026-03-18 | 15/750 |
|
|
|
[考研] 317求調(diào)劑 +5 | 申子申申 2026-03-19 | 9/450 |
|