Rh(<scp>iii</scp>)-catalyzed synthesis of 1-aminoindole derivatives from 2-acetyl-1-arylhydrazines and diazo compounds in water
作者:Yujie Liang、Ke Yu、Bin Li、Shansheng Xu、Haibin Song、Baiquan Wang
DOI:10.1039/c4cc01520g
日期:——
A novel and direct approach to synthesize 1-aminoindole derivatives by Rh(iii)-catalyzed cyclization of 2-acetyl-1-arylhydrazines with diazo compounds via aryl C-H activation has been developed. This intermolecular annulation involving tandem C-H activation, cyclization and condensation steps proceeds efficiently in water, obviates the need of external oxidants, and displays a broad substituent scope
The invention relates to compounds of formula (I) having pharmacological activity towards the sigma receptor, to processes of preparation of such compounds, to pharmaceutical compositions comprising them, and to their use for the treatment and or prophylaxis of a disease in which the sigma receptor is involved.
5-METHYL-1-(NAPHTHALEN-2-YL)-1H-PYRAZOLES USEFUL AS SIGMA RECEPTOR INHIBITORS
申请人:Torrens Jover Antoni
公开号:US20110118253A1
公开(公告)日:2011-05-19
The invention relates to compounds having the formula (I):
wherein the dashed line (represented by - - - - -) represents an optional double bond;
R
1
is hydrogen and R
2
is hydroxyethyl; or R
1
and R
2
together with the nitrogen atom to which they are attached form a morpholinyl ring optionally substituted with one or two hydroxy groups;
each R
3
is independently hydroxy or C
1-6
alkoxy;
n is selected from 0, 1, and 2;
or a N-oxide, salt, prodrug, solvate or stereoisomer thereof;
with the proviso that the compound where the dashed line represents a double bond, R
1
and R
2
together with the nitrogen atom to which they are attached form a morpholinyl ring, and n is 0, is excluded.
Also provided are methods for the preparation of compounds of formula (I); their uses as a medicaments, particularly for the treatment or prophylaxis of a sigma receptor mediated diseases or conditions.
Synthesis of Tetrahydrocarbazol-4-ones via Rh(III)-Catalyzed C–H Activation/Annulation of Arylhydrazines with Iodonium Ylides
作者:He Li、Haichun Gu、Ye Lu、Ning Xu、Narenchaoketu Han、Jiaqi Li、Jinghai Liu、Jinglin Liu
DOI:10.1021/acs.joc.2c00852
日期:2022.6.17
The rhodium(III)-catalyzed C–H activation followed by intramolecular annulation reactions between arylhydrazines and iodonium ylides under suitable conditions has been described. Tetrahydrocarbazol-4-ones are readily achieved with moderate to excellent yields. The synthetic protocol features a wide range of substrates with high functional group tolerance. The gram-scale reaction and derivatization
The step-economical synthesis of C2, C3-unsubstituted 1-aminoindole derivatives through rhodium-catalyzed annulation of hydrazines with vinylene carbonate.