Ring-opening of enantiomerically pure oxa-containing heterocycles with phosphorus nucleophiles
2014
Fernández-Pérez, Héctor | Etayo, Pablo | Núñez-Rico, José Luis | Balakrishna, Bugga | Vidal-Ferran, Anton
Various oxa-containing heterocycles (i.e. enantiopure epoxide- and oxetane-based substrates) were subjected to ring-opening with phosphorus nucleophiles. The ring-opening reactions proceeded smoothly and the resulting 1,2-, and 1,3-phosphino alcohols were efficiently isolated as stable borane complexes. These derivatives arise from regio- and stereocontrolled syntheses based on ring-opening processes of oxa-containing heterocycles. The regio- and stereochemistry of the resulting chiral products were unequivocally confirmed in many cases via single-crystal X-ray diffraction analysis.
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