615-99-6Relevant articles and documents
Synthesis of γ,δ-unsaturated quaternary α-alkylamino acids using umpolung reaction and Claisen rearrangement
Mizota, Isao,Tanaka, Katsuki,Shimizu, Makoto
supporting information; experimental part, p. 1847 - 1850 (2012/05/04)
A new synthesis of γ,δ-unsaturated quaternary α-amino acid derivatives was developed utilizing N-alkylation and Claisen rearrangement of allyl α-iminocarboxylates.
New stereospecific synthesis of Tesaglitazar and Navaglitazar precursors
Brenna, Elisabetta,Fuganti, Claudio,Gatti, Francesco G.,Parmeggiani, Fabio
experimental part, p. 2694 - 2698 (2010/04/29)
A new synthetic route of to pharmaceutical intermediates (S)-1a-b and (S)-14 is reported. The reaction pathway is based on the baker's yeast-mediated reduction of the α-alkoxy cinnamaldehydes 9a-c to give the corresponding (S)-alcohols in good yields and
Method of preparation of oxalic acid esters and amides
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, (2008/06/13)
A new process is described for the preparation of oxalic acid esters and amides of general formula (I) STR1 wherein Z designates an --OR or --NR1 R2 group, wherein R represents substituted or unsubstituted alkyl, alkenyl, cycloalkyl, aryl, or aryl-alkyl, R1 is hydrogen or substituted or unsubstituted alkyl, alkenyl, cycloalkyl, aryl, or aryl-alkyl, R2 represents substituted or unsubstituted alkyl, alkenyl, cycloalkyl, aryl, or aryl-alkyl, or R1 and R2 taken together with the adjacent nitrogen atom represent a saturated 5-, 6-, 7-, or 8-membered heterocyclic ring, which may contain an additional heteroatom selected from --O--, --S--, and --N(H, Alkyl)--, and optionally bear one or more alkyl or alkenyl substituents, and Z1 designates an --OR or --NR1 R2 group, wherein R, R1, and R2 are as defined before, or a group --NHCOCH3, which comprises the base-catalysed reaction of diacetyloxamide with an alcohol ROH or/and an amine HNR1 R2. The compounds of formula (I) have many industrial utilities, mainly as intermediates and stabilizers in the polymer field.