An anhydride functional silsesquioxane resin composition containing the units: (RSiO)(i) (RSiO)(ii) (RSiO)and(iii) (SiO).(iv) R, R, and Rcan be an anhydride group, a hydrogen atom, an alkyl group, an aryl group, an aralkyl group, or an alkaryl group. a is 0.1-0.6, b is ...
Acid anhydride also refers tocompoundscontaining the acid anhydride functional group. Acid anhydrides are named from the acids that created them. The "acid" part of the name is replaced with "anhydride." For example, the acid anhydride formed from acetic acid would be acetic anhydride. Sources I...
Acid anhydrides tend to be less electrophilic compared to acyl chlorides, and only one acyl group can be transferred per molecule of the acid anhydride, which can lead to a lower efficiency atom. However, the low cost of acetic anhydride makes it a common choice for the acetylation reactions....
Maleic anhydrides electively modified lysine group of cellulase, which extended cellulose tolerance to pH from 8.5 to 10.0. Using 0.5 mol/L maleic anhydride under reaction conditions pH 8.0, 2∼4°C with cellulase 25 min, the half-life of the modified enzyme under pH 8.0, 9.0, 10.0, and...
This white solid, also referred to as 3,6-Dichloro-1,2-benzene dicarboxylic anhydride, is characterized by its dichloro and phthalic anhydride functional groups. It is commonly used as a building block in the production of dyes, pigments, and polymers. 3,6-Dichlorophthalic anhydride is also ...
acid anhydride (redirected fromCarboxylic anhydride) Also found in:Medical,Encyclopedia. acid anhydride n (Elements & Compounds) another name foranhydride3 Collins English Dictionary – Complete and Unabridged, 12th Edition 2014 © HarperCollins Publishers 1991, 1994, 1998, 2000, 2003, 2006, 2007,...
Windeatt, in Comprehensive Organic Functional Group Transformations II, 2005 5.05.2.1.6 From anhydrides Anhydrides can react with sulfur species to yield thiocarboxylic esters. A variety of thiiranes react with acetic anhydride in acetic acid in the presence of a base to form the corresponding thio...
This colorless liquid, also referred to as TDGA, is characterized by its anhydride functional group attached to the thiodiglycolic acid molecule. It is commonly used in the preparation of esters and amides, as well as in the production of polymers and coatings. Thiodiglycolic anhydride has been...
Methacrylic anhydride, with the chemical formula C8H10O3 and CAS registry number 760-93-0, is a compound known for its applications in various chemical processes. This colorless liquid, also referred to as 2-Methylpropenoic anhydride, is characterized by its anhydride functional group. It is com...
Carboxylic acid derivatives are usually prepared by a condensation reaction wherein the carboxylic acid is reacted with the corresponding functional group (alcohol, amine, etc.) with the expulsion of a molecule of water. Since this type of reaction is reversible, the reverse reaction can occur in...