Palladium-Catalyzed Oxidative Carbonylation of Aromatic C–H Bonds of N-Alkylanilines with CO and Alcohols for the Synthesis of o-Aminobenzoates
摘要:
A Pd(II)-catalyzed CH monocarbonylation of N-alkylanilines for the synthesis of o-aminobenzoates has been developed. Various aliphatic alcohols and phenol were tolerated in the reaction to afford the corresponding o-aminobenzoates in good yields under mild balloon pressure of CO.
There is provided a NKT cell augmentation-mediated autoimmunosuppressant and/or potentiator on normal immune responses characterized by its comprising a compound of the following general formula or a pharmaceutically acceptable salt thereof as an active ingredient.
[wherein R1 represents hydrogen or halogen,
R2 represents hydroxy,
R3 represents lower alkyl,
R4 represents lower alkyl,
R5 represents hydrogen or lower alkoxy, and
Z represents O or S]
Also provided is a novel process for synthesizing the above compound.
Palladium-Catalyzed Oxidative Carbonylation of Aromatic C–H Bonds of <i>N</i>-Alkylanilines with CO and Alcohols for the Synthesis of <i>o</i>-Aminobenzoates
A Pd(II)-catalyzed CH monocarbonylation of N-alkylanilines for the synthesis of o-aminobenzoates has been developed. Various aliphatic alcohols and phenol were tolerated in the reaction to afford the corresponding o-aminobenzoates in good yields under mild balloon pressure of CO.
An efficient synthesis of a class of novel<i>N</i>-Alkyl-<i>N</i>-aryl-4-hydroxy-1-methyl-2-oxo-1,2-dihydro-3-quinolinecarbothioamides
作者:Glen W. Spears、Kiyoshi Tsuji、Takashi Tojo、Hiroaki Nishimura、Takashi Ogino
DOI:10.1002/jhet.5570390427
日期:2002.7
The novel title compounds have been prepared in high yield by an optimized amide coupling followed by a Dieckmann cyclization. Additionally, this new route is amenable to preparative scale synthesis.