呢條式要用咩reactant?
如果要用H2要加咩?
我見marking有LiALH(t-BuO)3
is it out-c?我google唔到LiALH(t-BuO)3
既資料..
圖片參考：http://i364.photobucket.com/albums/oo87/davis1991411/cffcc298.jpg
AL chem, org chem一條式唔識,急!
2011-04-08 5:53 pm
回答 (3)
2011-04-09 1:51 pm
✔ 最佳答案
http://en.wikipedia.org/wiki/Rosenmund_reaction marking 應該是講DIBAH, Di-IsoButylAluminium Hydride AlH(tert-Bu)2 ,
可以將acyl 還原成aldehyde.
另外可以用H2, catalyst 用palladium (Pd) + barium sulfate (poisoned catalyst, 阻止進一步hydrogenation).
兩者應該已經out-syl. (或者話成個反應已經out-syl.), 我都係大學先學到.
用LiAlH4 的話就太強, 會直接變alcohol.
2011-04-08 11:02 pm
http://www.cliffsnotes.com/study_guide/Synthesis-of-Aldehydes.topicArticleId-23297,articleId-23278.html
LiALH(t-BuO)3 係 lithium tri-tert-butoxyaluminum hydride
我唔知係唔係 out C
但九成係 out C
2011-04-08 15:08:40 補充：
又會唔會係 RCOCl -> RCOOH -> RCH 呢
我冇讀過 AL chem 嫁
純吹水
LiALH(t-BuO)3 係 lithium tri-tert-butoxyaluminum hydride
我唔知係唔係 out C
但九成係 out C
2011-04-08 15:08:40 補充：
又會唔會係 RCOCl -> RCOOH -> RCH 呢
我冇讀過 AL chem 嫁
純吹水
2011-04-08 9:32 pm
wiki LiALH(t-BuO)3
http://en.wikipedia.org/wiki/Lithium_aluminium_hydride
http://en.wikipedia.org/wiki/Lithium_aluminium_hydride
收錄日期: 2021-04-20 00:26:52
原文連結 [永久失效]:
https://hk.answers.yahoo.com/question/index?qid=20110408000051KK00188