The Primary Phosphine Renaissance

In conclusion to this section, we have found the first air-stable chiral primary phosphines (R)-5 and (5)-6, and attributed that stability to conjugation in their aryl backbones. The molecular model we have now developed suggests that despite the varied structures shown in Fig. 1.8, we may be able to rationalize and predict the sensitivity of known and unknown primary phosphines we hope that this will prompt a renaissance in the use of primary phosphines as synthetic precursors. In the following section we show that R)-5 and (5)-6 are convenient chiral starting materials. 

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