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Synthesis 2020; 52(15): 2224-2232
DOI: 10.1055/s-0040-1707945
DOI: 10.1055/s-0040-1707945
paper
Catalyst- and Solvent-Free Hydrophosphorylation of Ketones with Secondary Phosphine Oxides: Green Synthesis of Tertiary α-Hydroxyphosphine Oxides
This work has been approved by plans for research projects at the IPC RAS State, Registration No. AAAA-A16-116112510005-7.Further Information
Publication History
Received: 14 February 2020
Accepted after revision: 06 April 2020
Publication Date:
22 April 2020 (online)


Abstract
Tertiary α-hydroxyphosphine oxides have been synthesized via the catalyst- and solvent-free reaction between available secondary phosphine oxides and aliphatic, aromatic and heteroaromatic ketones at 20–62 °C in near to 96–98% yield. The developed method meets the requirements of green chemistry and the PASE (pot, atom, step economy) paradigm. According to quantum-chemical calculations at the B3LYP/6-311++G(d,p) level, the synthesized hydroxyphosphine oxides feature a weak (≈3 kcal·mol–1) O−H···O=P intramolecular hydrogen bond.
Key words
ketones - secondary phosphine oxides - catalyst- and solvent-free addition - α-hydroxyphosphine oxidesSupporting Information
- Supporting information for this article is available online at https://doi.org/10.1055/s-0040-1707945.
- Supporting Information