## Abstract The four deuteriated 4βphenylbutyric [2,3β^2^H~2~]β, [4,4β^2^H~2~]β, [2,3,4,4β^2^H~4~]β, and [2,2,3,3,4,4β^2^H~6~]βacids have been synthesized in high isotopic purity by utilizing crossed Kolbe electrolysis of methyl hydrogen [^2^H~0~]β, [2,3β^2^H~2~], and [2,3,3,3β^2^H~4~]βsuccinates a
Preparation of |2,4-2H|- and |2,4-3H|-tomatidine
β Scribed by D. Doller; E. G. Gros
- Publisher
- John Wiley and Sons
- Year
- 1986
- Tongue
- French
- Weight
- 179 KB
- Volume
- 23
- Category
- Article
- ISSN
- 0022-2135
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β¦ Synopsis
2 3 The preparation of 12,4-HI-and 12,4-HI-tomatidine was accomplished by oxydation of the unlabelled compoun to tomatidone, exchange of and direct reduction of the labelled tomatidone to tomatidine. The efficiency of the procedure was checked by physical (1H and 33C NMR, MS) methods.
π SIMILAR VOLUMES
4-Aminobutanoic a ~i d -2 , 2 -~H z and -4,4-2H2 were synthesized i n h i g h y i e l d w i t h h i g h deuterium incorporation, and then converted i n t o the corresponding deuterium-labelled a n t i -convul sant drug, progabi de, by means o f a t r a n s i m i n a t i on reaction.
## Abstract Substituted 2β(benzylamino)β2__H__β1,4βbenzoxazinβ3(4__H__)βones are unstable under alkaline and acidic conditions, undergoing opening of the benzoxazinone ring. 2βBromoβ2__H__β1,4βbenzoxazinβ3(4__H__)βones show similar degradation under alkaline conditions, while replacement of Br at C