Issue 40, 2021

Facile synthesis of cyclo-(P4tBu3)-containing oligo- and pnictaphosphanes

Abstract

The cyclo-(P4tBu3) synthon [Li{cyclo-(P4tBu3)}(thf)(tmeda)] (1) (thf = tetrahydrofuran, tmeda = N,N,N′,N′-tetramethylethane-1,2-diamine) is readily accessible in a one-pot synthesis from P4 and LitBu. The use of 1 as a cyclo-(P4tBu3) building block enables the rational synthesis of cyclo-(P4tBu3)-containing oligophosphanes, namely {cyclo-(P4tBu3)}2 (2), {cyclo-(P4tBu3)}2PtBu (3) and {cyclo-(P4tBu3)}2CH2 (4), C3v-symmetric pnictaphosphanes E{cyclo-(P4tBu3)}3 (E = Bi, Sb, As; 5–7) as well as AsCl{cyclo-(P4tBu3)}2 (8). Compounds 5 and 6 represent the first neutral homoleptic bismuthane and stibane that contain only bonds to phosphorus. All new compounds were isolated in moderate to good yields and fully characterised. The 31P{1H} NMR spectral data of 1, 2, 4, and 8 have been determined by automated line-shape analysis.

Graphical abstract: Facile synthesis of cyclo-(P4tBu3)-containing oligo- and pnictaphosphanes

Associated articles

Supplementary files

Article information

Article type
Paper
Submitted
08 aug 2021
Accepted
02 sep 2021
First published
03 sep 2021

Dalton Trans., 2021,50, 14144-14155

Facile synthesis of cyclo-(P4tBu3)-containing oligo- and pnictaphosphanes

V. J. Eilrich, T. Grell, P. Lönnecke and E. Hey-Hawkins, Dalton Trans., 2021, 50, 14144 DOI: 10.1039/D1DT02639A

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