| 查看: 1233 | 回復: 11 | |||
dem-3882608銅蟲 (正式寫手)
|
[交流]
【求助】翻譯求助 已有9人參與
|
|
the temperature of solution initially increased by ca. 15 oC ca 是什么東西? |
木蟲 (正式寫手)
金蟲 (小有名氣)

木蟲 (正式寫手)
木蟲 (正式寫手)
鐵桿木蟲 (著名寫手)
金蟲 (小有名氣)
銅蟲 (正式寫手)
|
謝謝各位的關注 原文如下 Anhydride Synthesis:The acyl chloride (6.9 mmol) was added to a solution of 20 mL of previously dried benzene and dry pyridine (7.0 mmol) under nitrogen. Stirring was continued until 'a finely divided white precipitate was observed which indicated the formation of the reactive acyl halide-pyridinium complex. The reaction vessel waa placed in an ice bath at -10 oC and the carboxylic acid was added all at once. The temperature of the solution initially increased by ca. 15 oC, but returned to a lower temperature after stirring for an additional 20 min at -10 oC. The reaction mixture was filtered through Celite on a glass frit. The solvent was then removed in vacuo to yield product which was purified as indicated below. 對于The temperature of the solution initially increased by ca. 15 oC 不知是如何升高到15度的 |
木蟲 (著名寫手)
| 最具人氣熱帖推薦 [查看全部] | 作者 | 回/看 | 最后發(fā)表 | |
|---|---|---|---|---|
|
[考研] 297求調劑 +4 | 戲精丹丹丹 2026-03-17 | 4/200 |
|
|---|---|---|---|---|
|
[考研] 265求調劑 +3 | 梁梁校校 2026-03-17 | 3/150 |
|
|
[考研] 278求調劑 +5 | 煙火先于春 2026-03-17 | 5/250 |
|
|
[考研] 268求調劑 +7 | 好運連綿不絕 2026-03-12 | 8/400 |
|
|
[考研] 材料,紡織,生物(0856、0710),化學招生啦 +3 | Eember. 2026-03-17 | 7/350 |
|
|
[考研] 332求調劑 +6 | Zz版 2026-03-13 | 6/300 |
|
|
[考研] 0854可跨調劑,一作一項核心論文五項專利,省、國級證書40+數(shù)一英一287 +3 | 小李0854 2026-03-16 | 3/150 |
|
|
[考研] 271求調劑 +12 | 生如夏花… 2026-03-11 | 14/700 |
|
|
[考研] 274求調劑 +5 | 時間點 2026-03-13 | 5/250 |
|
|
[考研] 326求調劑 +4 | 諾貝爾化學獎覬?/a> 2026-03-15 | 7/350 |
|
|
[基金申請]
今年的國基金是打分制嗎?
50+3
|
zhanghaozhu 2026-03-14 | 3/150 |
|
|
[考研] 求老師收留調劑 +4 | jiang姜66 2026-03-14 | 5/250 |
|
|
[考研] 材料與化工求調劑一志愿 985 總分 295 +8 | dream…… 2026-03-12 | 8/400 |
|
|
[考研] 材料工程調劑 +9 | 咪咪空空 2026-03-12 | 9/450 |
|
|
[考研] 求材料調劑 085600英一數(shù)二總分302 前三科235 精通機器學習 一志愿哈工大 +4 | 林yaxin 2026-03-12 | 4/200 |
|
|
[考研] 一志愿西南交大,材料專碩317求調劑 +5 | lx8568 2026-03-11 | 5/250 |
|
|
[考研] 333求調劑 +3 | 球球古力 2026-03-11 | 3/150 |
|
|
[考研] 315求調劑 +9 | 小羊小羊_ 2026-03-11 | 10/500 |
|
|
[考研] 290求調劑 +7 | ADT 2026-03-12 | 7/350 |
|
|
[考研] 270求調劑 085600材料與化工專碩 +3 | YXCT 2026-03-11 | 3/150 |
|