OcoteaCymbarum
(Hive Bee) 05-09-04 20:47 No 506132 |
Quick oxygen/wacker in almost 80% yield? | |||||||
I was reading a prep on Organic syntheses about a wacker-type of oxidation and the easiness and the yields just seem great Basically, using 32 grams of CuCl2 and 1.19 grams of PdCl2, the author claims a 78% yield on 1.66 moles of alkene. The starting compound is 2,2 dimethyl-4-pentenal and the end product the corresponding methylketone. http://www.orgsyn.org/orgsyn/prep.asp?rx As anyone ever tried something similar? Imagine the yields being the same for our favorite alkene... |
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XrLeap (Hive Bee) 08-12-04 22:45 No 525195 |
this seems to be fairly easy, but processing... | |||||||
this seems to be fairly easy, but processing time of 60 ro 66 hr is long, isn't it? oops i did it again |
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OcoteaCymbarum (Hive Bee) 08-13-04 07:01 No 525259 |
Would you care if it gave such high yields? | |||||||
I know I wouldnt. Using 1.19 grams of Palladium to transform about 270 grams of safrole into 230 grams of ketone, I wouldnt care about those 60 hours. What I really wonder about is oxygen flow. They dont mention it anywhere, its the drawback I find. So its seems its really a matter of how much oxygen needs to be used. I had totally forgotten about this post, I realize the title of thread is not right. |
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Rhodium (Chief Bee) 08-13-04 09:15 No 525276 |
Then what about this variation? | |||||||
Post 417436 (Rhodium: "Wacker with 80% yield in 10min at RT with less Pd", Novel Discourse) The Hive - Clandestine Chemists Without Borders |
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