Compounds of formula I, and pharmaceutically acceptable salts thereof, ##STR1## in which R1 is hydrogen (1-6C)alkyl or (1-4C)alkanoyl; A is --N CQ--O--, N CQ--NR8 --, --N CQ--CH N-- </
and reaction with water may provide a compound of the formula: The foregoing additive may made with a molar ratio of (a) hydrocarbyl-substituted acylating agent to (b) reactant in the reaction medium in the range 10:1 to 1:10. Other reaction conditions are exemplified in the examples co...
Q1 in general formula (3) includes hydrogen; alkyl such as methyl, ethyl, etc.; aryl such as phenyl, tolyl, etc.; haloalkyl such as chloromethyl, chloroethyl, etc.; haloaryl such as chloromethylphenyl, chloroethylphenyl, 2,4,6-trichlorophenyl, 2,4,6-tribromophenyl, etc.; alkoxycarbonyl...
for 1 to 24 hours in the presence of not less than the equivalent of an acid-binding agent. As the compound represented by the formula (XVII), there are given for example formamide, pentan amide, butan amide, N-ethylacetamide, acetamide, chloroacetamide, dichloroacetamide, trichloroacetamide,...
1. A composition for forming a high potency preformed stabilizer for use in making polymer/polyols which contains: (A) a precursor to the stabilizer comprising an esterified product of reaction of: (i) a hydroxy-terminated alkylene oxide adduct of a polyol of the formula A(OH)>3 where...
Obviously, if n in the above formula exceeds 2 the molecule as a whole could be considered to be branched. The invention also comprises a convenient method for making the compounds of the above formula. One method is by acylating the desired proportion of the hydroxyl groups in substantially...
A method for treating the surface of a substrate with a surface treatment composition, wherein the surface treatment composition comprises a liquid medium containing a complexing agent as a metal depo