Chemically induced dynamic polarisation of19F-nuclei during reactions at chiral centres; the benzylic insertion of diphenylmethylene into diastereoisomeric 1-methylheptyl α-fluorophenylacetates
Bethell, Donald; McDonald, Kenneth
Журнал:
Journal of the Chemical Society, Chemical Communications
Дата:
1974
Аннотация:
Polarisation of <sup>19</sup>F-nuclei during the insertion of triplet diphenylmethylene into the benzylic Câ H bond of individual, optically active, diastereoisomeric 1-methyl-heptyl α-fluorophenylacetates appears equally in both diastereoisomeric products, indicating that the radical pairs giving rise to CIDNP show no stereochemical preference in their combination.
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