Esterification is conducted at a temperature of 20 to 150 DEG C and under a pressure of 1 to 340 bars. The initial amount of anhydrous acid to acyl halide is 0.01 to 95.5 parts by weight anhydrous acid to 99.99 to 4.5 parts by weight of acyl halide. The carboxylic ester may be oxy...
Define Carboxylic acids. Carboxylic acids synonyms, Carboxylic acids pronunciation, Carboxylic acids translation, English dictionary definition of Carboxylic acids. n. An organic acid that contains one or more carboxyl groups. American Heritage® Dicti
2916209090 other(Cycloalkane\Cycloene\Cyclic terpene)Monocarboxylic acid(Including anhydrides\Acyl halide,Peroxides, peroxyacids and derivatives of this tax number). VAT:17.0% Tax refund rate:9.0% Regulatory conditions:AB(Customs clearance form for Inbound Goods,Customs clearance form for outbound goods...
acid addition salt thereof, in the presence of an inorganic or organic base (1) either with a thiocarbonyl halide of the Formula wherein Hal represents chlorine or bromine or with the individual components of such a halide, namely with phosgene or thiophosgene and the alkali-metal salt of an...
One effective route for the preparation of metal(II) complexes is direct metathesis of carbonyl halide precursors with thiolates or thiocarboxylic acid and related salt derivatives, shown for just two examples (Equations (52) and (53)). Use of hindered thiolates can result in unusual products,...
ChemInform Abstract: Thiophilic Halogenation of Thiocarboxylic Acid O-Silyl Esters. A Facile Preparation of Acylsulfenyl Halides.thio compounds (benzene compounds)The O-silyl thiocarboxylates (I) are halogenated to yield the acylsulfenyl halides (II).doi:10.1002/chin.198708174...
PURPOSE: To obtain the subject compound which is a constitutive element of peptide becoming an enzyme inhibitor by converting N-protected α- aminocarboxylic acid halide into α-oxonitrile with trimethyl silyl cyanide, subsequently converting it into α-oxocarboxylic ester and then, re...
these conventional methods limit the functional group tolerance due to the strongly basic conditions and unstable acid halide preparation. Thus, development of an efficient method for the synthesis ofN-acyl indoles has become more attractive. For example, Snider and coworkers reported theN-acylation of...
N-phenylacyl thiazolidinethione was also well tolerated, as demonstrated by the generation of 3p in 96% ee. Fig. 1 The scope of α-aryl acetic acid derivatives. Conditions: PhCOOH (0.5 mmol, 2.5 equiv), CuOAc (2.5 mol%), tBuOOH in decane (2.5 equiv) in THF (1.0 mL) at ...
The novel compounds of the formula I ##STR1## in which n is an integer from the range from 4 to 8 and m is an integer from the range from 1 to 4, A is the aliphatic, aromatic, araliphatic or heterocyclic radical of a monobasic to tetrabasic carboxylic acid, and R1 and R1',...