METHOD OF PRODUCING 1,8-{BIS[(PENT-2,4-DION-3-YL)METHYLSULPHANYL]}-3,6-DIOXAOCTANE AND 4,4'-{BIS[(PENT-2,4-DION-3-YL)METHYLSULPHANYL]}-DIPHENYL OXIDE Russian patent published in 2014 - IPC C07C321/04 C07C321/28 

FIELD: chemistry.

SUBSTANCE: invention relates to organic chemistry, particularly a method of producing 1,8-{bis[(pent-2,4-dion-3-yl)methylsulphanyl]}-3,6-dioxaoctane (1a) and 4,4'-{bis[(pent-2,4-dion-3-yl)methylsulphanyl]}-diphenyl oxide (1b) of general formula (1): where (1a) (1b) characterised by that formaldehyde (37%) reacts with α,ω-dithiol HS-X-SH, where X=(CH)₂O(CH)₂O(CH)₂; n-C₆H₄-O-C₆H₄-n, and acetylacetone in the presence of a Al₂O₃/SiO₂ catalyst, with molar ratio acetylacetone:CH₂O:α,ω-dithiol:Al₂O₃/SiO₂=2:2:1:(0.03-0.07), at room temperature (about 20°C) and atmospheric pressure for 5-7 hours in a chloroform-ethanol solvent mixture (1:1, by volume).

EFFECT: method of producing 1,8-{bis[(pent-2,4-dion-3-yl)methylsulphanyl]}-3,6-dioxaoctane (1a) and 4,4'-{bis[(pent-2,4-dion-3-yl)methylsulphanyl]}-diphenyl oxide (1b), which can be used as selective sorbents, extractants and complexing agents.

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