54985-63-6Relevant articles and documents
4,4-Bis(methylthio)azetidin-2-ones as synthons of 1,2- and 1,3-dicarbonyl systems
Konaklieva, Monika I.,Suwandi, Lita S.,Kostova, Maya,Deschamps, Jeffrey
supporting information; experimental part, p. 1909 - 1912 (2011/04/25)
The importance of β-lactams as synthetic building blocks has been widely recognized in organic synthesis due to possible ring cleavage at any of the four single bonds of the β-lactam ring. We now report reactions involving breaking of the N1-C4 bond in differently substituted at C3 4,4-bis(methylthio)azetidin-2-ones, leading to formation of 1,2- and 1,3-dicarbonyl systems.
Unique zeolite-catalyzed synthesis of nitroketene S,N-acetals
Indrasena Reddy,Bhawal, Baburao M.,Rajappa, Srinivasachari
, p. 2101 - 2108 (2007/10/02)
Dimethyl carbonimidodithioates (4a-g, 7a-c) derived from various primary amines and amino acid esters [glycine, (L)-alanine and (L)-phenylalanine] have been condensed with nitromethane in the presence of the rare-earth exchanged zeolite RE(70%)Na Y to give the S,N-acetals (5a-g, 8a-c). Mercuric chloride catalyzed hydrolysis of these (8a-c) has led to the nitroacetyl derivatives (9a-c). The glycine derivative (7a) gives a dimeric product (11) when heated alone with the zeolite.
Improved process for the preparation of 1-substituted amino-1-substituted thio-2-nitro alkenes
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, (2008/06/13)
A process is disclosed for the manufacture of 1-substituted amino-1-substituted thio-2 nitro alkenes of the general formula: (R1NH) (R2S) C=CR3 (NO2) wherein R1, R2, R3, may be same or different and may consist of hydrogen, alkyl, aryl or arylalkyl groups