Allyldiphenylphosphine oxide

Cycloadditions of cyclic (a) and acyclic (b) nitrones to achiral (535a) and chiral a-diphenylphosphinyl alkenes (535b,c) have been reported (752). In each case, addition to allyldiphenylphosphine oxide (535a) gave a single isoxazolidine... 

In contrast, the lithio derivative of allyldiphenylphosphine oxide (2)3 reacts with aldehydes in the presence of HMPT to give (E)-l,3 dienes (equation II). 

Allyl anions (38a),(38b) and (38c) exhibit a similar regioselectivity toward electrophiles, and thus serve as homoenolate synthons. Addition of titanium tetraisopropoxide to (39) followed by condensation with aldehydes gives the anti adducts exclusively, which can be converted to the (Z)-1,3-dienes upon treatment with methyl iodide (Scheme 18). The ( -1,3-dienes can be prepared from the lithiated allyldiphenylphosphine oxide. The stabilized allylic phosphonate anion (40) condenses with carbonyl... 

Kahraman et described the synthesis of aromatic phosphorus-containing allyl monomers such as allyldiphenylphosphine oxide (ADPPO) or bis[4-(allylo3gr)phenyl] phenylphosphine oxide (DAPPO) (Scheme 3.14). The... 

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