Search International and National Patent Collections

1. (WO2017197212) HIGH PURITY 1,1-DICARBONYL SUBSTITUTED-1-ALKENES AND METHODS FOR THEIR PREPARATION

Pub. No.:    WO/2017/197212    International Application No.:    PCT/US2017/032316
Publication Date: Fri Nov 17 00:59:59 CET 2017 International Filing Date: Sat May 13 01:59:59 CEST 2017
IPC: C07C 67/333
C07C 69/593
Applicants: SIRRUS, INC.
Inventors: SULLIVAN, Jeffrey, M.
POWERS, Kevin
BARRETT, William
Title: HIGH PURITY 1,1-DICARBONYL SUBSTITUTED-1-ALKENES AND METHODS FOR THEIR PREPARATION
Abstract:
A composition comprising about 97 mole percent or greater of one or more 1, 1-dicarbonyl substituted-1-ethylenes and about 3 mole percent or less of one or more 1,1-dicarbonyl substituted-methanes. A process comprising: contacting in a fluid state one or more 1,1-dicarbonyl substituted-1,1 hydroxymethyl-methanes and greater than 200 ppm to about 1000 ppm of one or more strong acids based on the weight of the one or more 1,1-dicarbonyl substituted-1,1 hydroxymethyl-methanes with a zeolite catalyst at a temperature of about 180 °C to about 220 °C for a sufficient time to convert about 98 percent or greater of the one or more 1,1-dicarbonyl substituted-1,1 hydroxymethyl-methanes to one or more 1,1-dicarbonyl substituted-1-ethylenes.