4613-38-1Relevant articles and documents
Method for preparing an unsaturated carboxylic acid
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Page/Page column 4; 5, (2008/06/13)
The invention concerns a method for preparing an unsaturated carboxylic acid from the corresponding aldehyde. More particularly, the invention aims at preparing an aliphatic carboxylic acid having at least an unsaturation conjugated with the carbonyl group. In particular, the invention concerns the preparation of geranic acid. The invention relates to a method for preparing an unsaturated carboxylic acid from the corresponding aldehyde. Said method is characterized in that it comprises a step which consists in oxidizing said aldehyde, in controlled basic medium and using molecular oxygen or a gas containing same, in the presence of a catalyst based on palladium and/or platinum and an activator based on bismuth, in conditions such that the oxidizing is carried out by diffusion process
ACTIVATION AND SYNTHETIC APPLICATION OF THIOSTANNANES. PROTECTION OF CARBOXYL GROUPS WITH α-METHYLCINNAMYL ALCOHOL AS A MEANS OF CHEMODIFFERENTIATION AND SELECTIVE ACTIVATION
Sato, Tsueno,Otera, Junzo,Nozaki, Hitoshi
, p. 2959 - 2962 (2007/10/02)
α-Methylcinnamyl (MEC) esters are converted into parent carboxylic acids under mild conditions, various functions being tolerated including acetoxy, siloxy, MEM, and so on.Furthermore, MEC esters are transformed into other esters through CsF-promoted alkylation of intermediary organotin carboxylates.
Rhodium chiral monophosphine complex catalyzed hydrogenations of terpenic and α-(acylamino)-substituted acrylic acids
Valentine Jr.,Johnson,Priester,et al.
, p. 3698 - 3703 (2007/10/02)
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