Abstract
A group of seven achiral, α- and β-chiral dialkylphosphanes were synthesized in one
step from sodium phosphide and alkyl sulfonates or sulfates. The corresponding borane
complexes were further alkylated with alkyl, allyl, and benzyl bromides and mesylates
to give tertiary mono- and diphosphanes, either via lithium phosphide-borane complexes
at low temperature (45-78%) or under phase-transfer conditions (79-91%).
Key words
red phosphorus - phosphorus complexes - phosphanes - boron complexes - phase-transfer
catalysis
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