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Class Information
Number: 562/894
Name: Organic compounds -- part of the class 532-570 series > Organic compounds (class 532, subclass 1) > Carboxylic acid anhydrides (i.e., compounds having the -c(=o)-o-c(=o)- group) > Processes of forming the -c(=o)-o-c(=o)- group > Carboxylic acid salt reactant
Description: Processes wherein a salt of a carboxylic acid is used as a reactant.
Patents under this class:
| Patent Number |
Title Of Patent |
Date Issued |
| 7427692 |
Process for preparation of 7-[.alpha.-amino (4-hydroxyphenyl) acetamido]-3-substituted-3-cephem-4-carboxylic acid |
Sep. 23, 2008 |
| 7420076 |
Process for preparing dialkyl dicarbonates |
Sep. 2, 2008 |
| 6936734 |
Process for manufacturing unsaturated carboxylic acid anhydrides |
Aug. 30, 2005 |
| 6469206 |
Process for the preparation of triflic anhydride |
Oct. 22, 2002 |
| 6346650 |
Method for making mixed high purity (meth)acrylic anhydrides |
Feb. 12, 2002 |
| 6274096 |
Methanol plant retrofit |
Aug. 14, 2001 |
| 5652336 |
Polymer-bound mixed carboxylic anhydrides as a stable form of activated carboxylic acids |
Jul. 29, 1997 |
| 5523481 |
Process for the preparation of dialkyl dicarbonates |
Jun. 4, 1996 |
| 5516892 |
Polymer-bound mixed carboxylic anhdrides as a stable form of activated carboxylic acids |
May. 14, 1996 |
| 4874558 |
Polymer catalyzed synthesis of acid anhydrides |
Oct. 17, 1989 |
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