Reactions of 2-alkylsulfanyl- and 2-alkoxy-4-hydroxy-6H-1,3-oxazin-6-ones with O-nucleophiles
摘要:
Reactions of 2-alkylsulfanyl- and 2-alkoxy-4-hydroxy-6H-1,3-oxazin-6-ones with oxygen-centered nucleophiles were studied. 2-Alkoxy-4-hydroxy-6H-1,3-oxazin-6-ones reacted with water and alcohols to give the corresponding alkyl 3-amino-3-oxopropanoates as a result of opening of the oxazine ring at the C(6)-O bond, whereas their 2-alkylsulfanyl analogs turned out to be stable toward O-nucleophiles. The different reactivities of the title compounds were interpreted in terms of quantum-chemical calculations of their electronic structure.
ARYLATED BETA-DICARBONYL COMPOUNDS AND PROCESS FOR THE PREPARATION THEREOF
申请人:Santosh Mhaske Baburao
公开号:US20140228592A1
公开(公告)日:2014-08-14
The invention discloses a one pot process for the arylation of β-dicarbonyl compounds. Particularly, the present invention discloses transition-metal-free, chemo-selective, one pot process for the C-arylation of malonamide esters having Formula I at room temperature provide temperature range to obtain the arylated compounds of formula II with good yield, wherein the arylated compounds are selected from mono-arylated compound and di-arylated compound or mixture thereof.