Radical Additions of Alkyl 2-Haloalkanoates and 2-Haloalkanenitriles to Alkenes Initiated by Electron Transfer from Copper in Solvent-Free Systems
作者:Jürgen O. Metzger、Ralf Mahler、Gerald Francke
DOI:10.1002/jlac.199719971119
日期:1997.11
Alkyl 2-iodoalkanoates 2, and 2-iodoalkanenitriles 15 were added, with copper powder, to the 1-alkenes 1a, e, f, and h, and to the alkenes 1b, c, d, and g with a 1,2-dialkyl substituted double bond, to give, respectively, γ-lactones and 4-iodoalkanenitriles in very good yields. No solvent was used. The reaction is a free radical addition initiated by electrontransferfrom copper to the activated iodoalkane
One-Pot Synthesis of 5-Alkylthio-3H-1,2-dithiole-3-thiones: Advantages and Scopes
作者:Mario L. Aimar、Rita H. de Rossi
DOI:10.1055/s-2000-8202
日期:——
The reaction of dialkyl malonate esters with P 2S5/S8 in boiling xylene in the presence of 2-mercaptobenzothiazole/ZnO as catalyst produces 5-alkylthio-3 H-1,2-dithiole-3-thiones as major identifiable product. Moderate yields were obtained with malonate esters of primary alcohols. The reaction fails with malonate esters of secondary alcohols. Regarding the substituent in position two, di- alkyl malonates
Benzodioxane and benzodioxolane derivatives and uses thereof
申请人:Zhou Dahui
公开号:US20060241172A1
公开(公告)日:2006-10-26
Compounds of formula I or pharmaceutically acceptable salts thereof are provided:
wherein each of R
1
, R
2
, R
3
, R
4
, y, n, m, and Ar are as defined, and described in classes and subclasses herein, which are agonists or partial agonists of the 2C subtype of brain serotonin receptors. The compounds, and compositions containing the compounds, can be used to treat a variety of central nervous system disorders such as schizophrenia.
Substituted isoquinoline-1,3(2H,4H)-diones, 1-thioxo-1,4-dihydro-2H-isoquinoline-3-ones and 1,4-dihydro-3 (2H)-isoquinolones and methods of use thereof
申请人:Tsou Hwei-Ru
公开号:US20080085890A1
公开(公告)日:2008-04-10
This invention provides compounds of Formula (I), having the structure
where G
1
, G
2
, G
3
, G
4
, A
1
, A
2
, Y
1
, Y
2
, L
1
, Z, e and f are defined herein, or a pharmaceutically acceptable salt thereof, which are useful for treating or preventing cancer.