63197-24-0Relevant articles and documents
Preparation method for substituting phthalide compound and intermediate of preparation method
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Paragraph 0167; 0168, (2017/10/07)
The invention discloses a preparation method for substituting a phthalide compound and an intermediate of the preparation method. The preparation method for substituting the phthalide compound comprises the following step that in water, the compound B is
N-ALKYL-4-(N',N'-DIALKYLAMINO)PYRIDINIUM SALTS: THERMALLY STABLE PHASE TRANSFER CATALYSTS FOR NUCLEOPHILIC AROMATIC DISPLACEMENT
Brunelle, D. J.,Singleton, Daniel A.
, p. 3383 - 3386 (2007/10/02)
N-Alkyl salts of 4-dialkylaminopyridines are effective phase transfer catalysts which are up to 100 times more stable than tetrabutylammonium bromide to conditions encountered in nucleophilic aromatic substitution reactions.These salts are thermally stable to over 300 deg C, and promote reactions in non-polar solvents (or in the absence of solvent) at temperatures as high as 200 deg C.