32406-17-0Relevant articles and documents
Perfect switching of photoreactivity by acid: Photochemical decarboxylation versus transesterification of mesityl cyclohexanecarboxylate
Mori, Tadashi,Wada, Takehiko,Inoue, Yoshihisa
, p. 3401 - 3404 (2007/10/03)
(matrix presented) Mesityl cyclohexanecarboxylate has been photodecarboxylated upon excitation at 254 nm to form cyclohexylmesitylene in good yield in neutral acetonitrile solutions. In the presence of a catalytic amount of the acid and ethanol as a nucleophile, however, the same compound undergoes facile transesterification upon irradiation, affording its ethyl ester in almost quantitative yield.
Process for the preparation of alkylated aromatic carboxylic acids and acyl halides
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, (2008/06/13)
The invention relates to a process for the preparation of polyalkylated aromatic carboxylic acids of formula I STR1 wherein R1, R2, R3, R4 and R5 are each independently of one another hydrogen, C1 -C20 alkyl, halogen or C5 -C8 cycloalkyl, with the proviso that at least two of the substituents R1, R2, R3, R4 or R5 are alkyl and/or cycloalkyl, by reacting corresponding aromatic hydrocarbons with carbon dioxide, which reaction is carried out observing special ratios of temperature and pressure. The invention furthermore relates to a one-pot process for the preparation of the corresponding acyl halides.