Controlled scrambling reactions to polyphosphanes via bond metathesis reactions.

ABSTRACT: Triphosphanes R'₂PP(R)PR'₂ (9a,c: R = Py; 9b R = BTz), 1,3-diphenyl-2-pyridyl-triphospholane 9d and pentaphospholanes (RP)₅ (13: R = Py; 18: R = BTz) are obtained in high yield of up to 98% from the reaction of dipyrazolylphosphanes RPpyr₂ (5: R = Py; 6: R = BTz; pyr = 1,3-dimethylpyrazolyl) and the respective secondary phosphane (R'₂PH, R' = Cy (9a,b), ^t Bu (9c); PhPH(CH₂)₂PHPh (9d)). The formation of derivatives 9a-d proceeds via a condensation reaction while the formation of 13 and 18 can only be explained by a selective scrambling reaction. We realized that the reaction outcome is strongly solven

SUBMITTER: Schoemaker R 

PROVIDER: S-EPMC7066665 | biostudies-literature | 2019 Dec

REPOSITORIES: biostudies-literature