79302-65-1Relevant academic research and scientific papers
Process for the preparation of isocyanates and their use for the preparation of polyisocyanates containing ester
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, (2008/06/13)
This invention relates to a novel process for the preparation of isocyanates containing silylated alcoholic or phenolic hydroxyl groups as substituents and to the use of the compounds obtained by this process as reactants for isocyanatocarboxylic acid halides in the preparation of polyisocyanates containing ester groups.
A Simple and Versatile Synthesis of Trimethylsiloxy-Substituted Isocyanates
Mormann, Werner,Leukel, Gabriele
, p. 990 - 992 (2007/10/02)
A versatile and efficient method for the synthesis of trimethylsiloxy-substituted isocyanates without the use of carbonyl chloride consists of the reaction of the O-trimethylsilyl derivatives of aminoalcohols, aminophenols, 4-aminobenzoic acid, and hydrox
Syntheses and Reactions of (Trimethylsiloxy)benzoyl Chlorides
Schwarz, Gerd,Alberts, Heinrich,Kricheldorf, Hans R.
, p. 1257 - 1270 (2007/10/02)
The (trimethylsiloxy)benzoyl chlorides 1-7 are easily to obtain under mild conditions from silylated hydroxybenzoic acids by means of thionyl chloride.Whereas these acid chlorides are stable at room temperature, they undergo condensation polymerisation at temperatures above 100 deg C.Reactions with various nucleophils, such as thioalcohols, phenols, amines, N,O-bis(silylated)amino acids and N-silylated lactams were investigated.With hexamethyldisilazane and thionyl chloride the (trimethylsiloxy)benzonitriles 21, 22 are accessible, and by means of trimethylsilylazide the (trimethylsiloxy)phenyl isocyanates 23-25 were obtained.Conversion with phenyl carbazate and subsequent silylation lead to the 2-(trimethylsiloxy)phenyl-1,3,4-oxadiazol-5-ones 27a-c.
