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. 2023 Sep 18;62(37):15104-15109.
doi: 10.1021/acs.inorgchem.3c02039. Epub 2023 Sep 7.

Multicomponent Synthesis of Poly(α-aminophosphine chalcogenide)s and Subsequent Depolymerization

Jan-Willem Lamberink-Ilupeju  1 , Mathew J Willans  1 , Joe B Gilroy  1 , James J Noël  1   2 , Johanna M Blacquiere  1 , Paul J Ragogna  1   2
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Multicomponent Synthesis of Poly(α-aminophosphine chalcogenide)s and Subsequent Depolymerization

Jan-Willem Lamberink-Ilupeju et al. Inorg Chem. .

Abstract

Multicomponent reactions of primary phosphines (R-PH2), diimines (R'-N═C(H)-R-(H)C═N-R'), and chalcogens (O2, S8) generate poly(α-aminophosphine chalcogenide)s (4-7) through step-growth polymerization. Characterization of the linear polymers using 31P{1H} diffusion-ordered NMR spectroscopy (DOSY) experiments aided in determining the molecular weight (Mw) of the material. Subjecting the polyphosphine oxide or sulfide to reducing conditions in the presence of a Lewis acid resulted in complete depolymerization of the polymers, quantitatively releasing the 1° phosphine and diimine (2) starting materials, with concomitant reduction of diimine to diamine (9).

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