Preparation of elemental 13C and K13CN from 13CO2
โ Scribed by W.M. Rutherford; J.C. Liner
- Book ID
- 103115301
- Publisher
- Elsevier Science
- Year
- 1970
- Weight
- 251 KB
- Volume
- 21
- Category
- Article
- ISSN
- 0020-708X
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๐ SIMILAR VOLUMES
## Abstract An expedient twoโstep synthesis of [^13^C~2~]DMSO, starting from commercially available [^13^C]methyl iodide, is described. The product obtained in 57% yield is of high chemical (โฅ 99%) and isotopic purity (= 98% ^13^C~2~, 2% ^13^C~1~), as jugded by NMRโspectroscopy and a GCโMSโassay.
## Abstract (12,13โ^13^C~2~)Retinal, (13,14โ^13^C~2~)retinal, (19โ^13^C)retinal and (20โ^13^C)retinal (1) were prepared in a simple fashion in high yield via a consecutive strategy. The key step is the reaction of a __N__โmethoxyโ__N__โmethylamide with an alkyllithium or a Grignard reagent. The pre
## Abstract Phenyldithiane **3** is methylated with ^13^CH~3~I to give, through the thioacetal **4**, labelled acetophenone (**5**). NaOBrโcleavage to the title compounds **1** and **2** (65 % and 76 %, respectively) and their use in the preparation of the dibromocyclopropane **6** and the dibromoo