The first examples of the asymmetric synthesis of P-stereogenic vinylic phospholene boranes are described. The synthetic approach is concise and flexible. The route involves (i) asymmetric deprotonation-allylation of a dimethyl phosphine borane; (ii) telescoped regioselective deprotonation, paraformaldehyde trapping, and hydroxyl group elimination to give a diene; and (iii) ring-closing metathesis.
Synthesis of P-stereogenic phospholene boranes via asymmetric deprotonation and ring-closing metathesis
SECCI, FRANCESCO;
2013-01-01
Abstract
The first examples of the asymmetric synthesis of P-stereogenic vinylic phospholene boranes are described. The synthetic approach is concise and flexible. The route involves (i) asymmetric deprotonation-allylation of a dimethyl phosphine borane; (ii) telescoped regioselective deprotonation, paraformaldehyde trapping, and hydroxyl group elimination to give a diene; and (iii) ring-closing metathesis.
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