47025-43-4Relevant academic research and scientific papers
PROTECTIVE GROUP TUNING IN THE STEREOSELECTIVE CONVERSION OF α-AMINO ALDEHYDES INTO AMINOALKYL EPOXIDES
Reetz, M.T.,Binder, J.
, p. 5425 - 5428 (2007/10/02)
Sulfonium and arsonium ylides of the type CH2=S(CH3)2 and CH2=As(Ph)3 react with doubly protected α-amino aldehydes 1 derived from amino acids to form aminoalkyl epoxides 3/4, diastereofacial selectivity ranging between 86:14 and >95:5.
Electron Addition to Triphenylmethyl Arsonium Iodide An Electron Spin Resonance Study
Symons, Martyn C. R.,McConnachie, Glen D. G.
, p. 211 - 216 (2007/10/02)
Exposure of crystalline Ph3AsMe(1+)I(1-) crystals to 60Co γ-rays at 77K yields an electron-adduct having e.s.r. parameters characteristic of methyl radicals weakly interacting with a Ph3As molecule.We now find that, on annealing, this species dissociates to give normal methyl radicals, whilst solutions in methanol (CD3OD) give, on electron addition at 77K, the normal arsoranyl radical together with methyl radicals, there being no trace of the adduct formed in the crystalline material.Reasons for these differences are discussed and it is suggested that the arsoranyl radical rearranges to a ?* species as a necessary step in the dissociation process.
