Method for the preparation of thiocarbonates
AssigneeBASF SE
InventorsPeter RUDOLF, Indre THIEL, Markus JEGELKA, Jan-Dirk ARNDT, Joaquim Henrique TELES
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Abstract
Process for the preparation of a compound with at least one five-membered cyclic monothiocarbonate group wherein a) a compound with at least one epoxy group is used as starting material b) the compound is reacted with phosgene or an alkyl chloroformate thus giving an adduct and c) the adduct is reacted with a compound comprising anionic sulfurthus obtaining the comound with at least one five-membered cyclic monothiocarbonate group.
Claims25
A process for the preparation of a compound with at least one five-membered cyclic monothiocarbonate group, comprising:
- a) employing a compound with at least one epoxy group as starting material;
- b) reacting the compound with phosgene or an alkyl chloroformate to obtain an adduct, and
- c) reacting the adduct with a compound comprising anionic sulfur to obtain the compound with at least one five-membered cyclic monothiocarbonate group
A compound of formula IVa;
- wherein two or three of R1a to R4a represent hydrogen and the groups R1a to R4 not being hydrogen represent a group CH2—O—R6 or CH2—O—C(═O)—R7 or —CH2—NR8R9 with R6 to R9 being a linear or branched alkyl group, alkoxy group, polyalkoxy group or alkenyl group with at maximum 30 carbon atoms.
A compound, comprising at least two five-membered cyclic monothiocarbonate groups.
Dependencies are inferred from the claim text.