Patent · US Active

Preparing cyclocarbonate-functionalized compounds

US9079871B2 · kind B2 · utility

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6References

7Claims

0Family size

Assignee

BASF SE

Inventors

Jochen Mezger · Garching an der Alz, DE
Burkhard Walther · Taching am See, DE
Joanna Mecfel-Marczewski · Schifferstadt, DE
Rainer Klopsch · Worms, DE

Key dates

Filing date	Nov 29, 2012
Grant date	Jul 14, 2015
Priority date	—
Expiry date	Nov 29, 2032

Classification

Technology area (CPC C)Chemistry; Metallurgy
CPC primaryC07D407/14
WIPO fieldOrganic fine chemistry
WIPO sectorChemistry

Abstract

An improved process is proposed for preparing cyclocarbonate-functionalized compounds of the general formula (I)where R1 and R2 in each occurrence are independently selected from hydrogen, methyl and ethyl, l in each occurrence independently is from 2 to 50, m in each occurrence independently is 0 or 1, and n is =3, subject to the proviso that the sum of all l values in the molecule is from 5 to 100, by reacting a chloroformate of formula (II)with a trifunctional amine of the general formula (III)characterized in that the reacting is carried out in an aqueous/organic two-phase system in the presence of an auxiliary base and of a phase transfer catalyst.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.