| 3 | 1/1 | 返回列表 |
| 查看: 510 | 回復(fù): 2 | |||
[求助]
漢譯英
|
|
酯的堿性水解反應(yīng)大多數(shù)是屬于親核加成——消除機(jī)理,OH是較強(qiáng)的親核 試荊,直接與酯的羰基碳發(fā)生親核加成,在最后產(chǎn)物中OH并投有失去 而在酯的酸性水解中。酸本身的組成和質(zhì)量在反應(yīng)前后均未變化。它加快了酯的水解反應(yīng)速率。酯的酸堿反應(yīng)的不同機(jī)理解釋是酯在堿性條件下比酸性條件下反應(yīng)更快。 大概意思對(duì)就行,最好翻譯的學(xué)術(shù)點(diǎn)哈! [ Last edited by 天路5228 on 2013-8-17 at 09:27 ] |
木蟲 (小有名氣)
木蟲
| The alkaline hydrolysis of ester is mostly the nucleophilic addition -- elimination, OH is a stronger nucleophile, which can make nucleophilic addition with carbonyl carbon of ester, and dosn't vanish in the final product but lost in the acid hydrolysis of the ester. The component and weight are both constant before and after the reaction, which enhance the rate of ester hydrolysis.The explanation for different mechanisms of ester acid-base reaction is that the reaction in alkaline is faster than that in acidic conditions. |

| 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] 352分 化工與材料 +4 | 海納百川Ly 2026-03-27 | 4/200 |
|
|---|---|---|---|---|
|
[考研] 320分,材料與化工專業(yè),求調(diào)劑 +5 | 一定上岸aaa 2026-03-27 | 7/350 |
|
|
[考研] 295材料工程專碩求調(diào)劑 +5 | 1428151015 2026-03-27 | 5/250 |
|
|
[考研] 266求調(diào)劑 +11 | 陽陽哇塞 2026-03-27 | 12/600 |
|
|
[考研] 305求調(diào)劑 +5 | 哇盧卡庫(kù) 2026-03-26 | 5/250 |
|
|
[考研] 339求調(diào)劑 +4 | 烤麥芽 2026-03-27 | 5/250 |
|
|
[考研] 22408 359分調(diào)劑 +3 | Qshers 2026-03-27 | 3/150 |
|
|
[考研] 求調(diào)劑 +3 | 劉柯@ 2026-03-24 | 4/200 |
|
|
[考研] 312求調(diào)劑 +9 | 上岸吧ZJY 2026-03-22 | 13/650 |
|
|
[考研] 321求調(diào)劑 +6 | wasdssaa 2026-03-26 | 6/300 |
|
|
[考研] 求調(diào)劑 +5 | 蘆lty 2026-03-25 | 6/300 |
|
|
[考研] 生物學(xué) 296 求調(diào)劑 +4 | 朵朵- 2026-03-26 | 6/300 |
|
|
[考研]
|
平樂樂樂 2026-03-26 | 4/200 |
|
|
[考研] 263求調(diào)劑 +6 | yqdszhdap- 2026-03-22 | 10/500 |
|
|
[考研] 309求調(diào)劑 +4 | gajsj 2026-03-25 | 5/250 |
|
|
[考研] 材料專碩 335 分求調(diào)劑 +4 | 拒絕冷暴力 2026-03-25 | 4/200 |
|
|
[考研] 【2026考研調(diào)劑】制藥工程 284分 求相關(guān)專業(yè)調(diào)劑名額 +4 | 袁奐奐 2026-03-25 | 8/400 |
|
|
[考研] 293求調(diào)劑 +7 | 加一一九 2026-03-24 | 7/350 |
|
|
[考研] 318求調(diào)劑 +5 | plum李子 2026-03-21 | 8/400 |
|
|
[考研] 280分求調(diào)劑 一志愿085802 +4 | PUMPT 2026-03-22 | 7/350 |
|