## Abstract 5β[4,5β^13^C~2~]β and 5β[1,5β^13^C~2~]Aminolevulinic acid (ALA) have been synthesized by the Gabriel condensation of potassium phthalimide with ethyl bromo[1,2β^13^C~2~]acetate (derived from [1,2β^13^C~2~]acetic acid) or ethyl bromo[2β^13^C]βacetate (derived from sodium [2β^13^C]acetate
Synthesis of 5,5-diphenylhydantion-2,4,5-13C3
β Scribed by J. A. Kepler; J. W. Lytle; G. F. Taylor
- Publisher
- John Wiley and Sons
- Year
- 1974
- Tongue
- French
- Weight
- 138 KB
- Volume
- 10
- Category
- Article
- ISSN
- 0022-2135
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π SIMILAR VOLUMES
Carbonylation of 1-undecene with 13C0 under a hydrogen atmosphere with pa 1 ladi um-s tannous ch 1 or ide cata 1 ys t afforded [ 1-13C Idodecanoi c ( 1 aur i c acid on a 0.25 mole scale. Reduction to the alcohol and treatment with concentrated HBr gave 1-[l-C]bromododecane which was used to alkylate
Three selectively labeled propynes were prepared either with deuterium or carbon-13 at position 3 and doubly labeled with carbon-13 at positions 1 and 2 by an alkylation reaction from the corresponding labeled or unlabeled monolithio acetylides and dimethylsulfates. Their lithiation with nBuLi gave
## Abstract 2β²,3β²βDideoxyinosineβ^13^C~5~ (ddIβ^13^C~5~) and the related 2β²,3β²βdideoxyadenosineβ^13^C~5~ (ddAβ^13^C~5~) were prepared from (S)β5β[^13^C~5~]2,3βdideoxyribonolactone 1. From a batch of this starting material ddIβ^13^C~5~ was made in 27% overall yield in seven steps and ddAβ^13^C~5~ in
The d e u t e r a t e d d i e n e was p r e p a r e d as r e p o r t e d by us [3]. from 1,2-dibromoethane-1 ,2-13C2 v i a t h e c y a n i d e , s u c c i n l c a c i d , bromosuccinic a c i d , fumaric a c i d and maleic a n h y d r i d e C4,51. The 13C-labelled maleic anhydride was p r e p a r e d