4294-36-4Relevant academic research and scientific papers
Chemoselective synthesis of N-substituted α-amino-α′- chloro ketones via chloromethylation of glycine-derived Weinreb amides
Pace, Vittorio,Holzer, Wolfgang,Verniest, Guido,Alcantara, Andres R.,De Kimpe, Norbert
supporting information, p. 919 - 926 (2013/05/08)
Functionalized α-arylamino-α′-chloro ketones are obtained in high yield via a straightforward homologation reaction of Weinreb amides derived from N-arylglycines using in situ generated chloromethyllithium. The use of the Weinreb amides is essential and allows the chemoselective homologation of N-aryl-N-substituted glycine analogues, a transformation which is not possible using similar glycine esters. The procedure is promising for the large-scale preparation of α-amino-α′-chloropropanones, which are valuable precursors for a variety of bioactive compounds. Copyright
ACETOLYSIS OF α'-SULPHONAMIDO α-CHLORO AND α-DIAZO KETONES. A CONVENIENT SYNTHESIS OF 3-AZETIDINONES
Pusino, Alba,Saba, Antonio,Desole, Giuseppe,Rosnati, Vittorio
, p. 33 - 36 (2007/10/02)
Acetolysis of tertiary sulfonyl amides 1b,d leads to chlorine cinesubstitution exclusively, while in the case of the secondary amides 1a,c,e, only products of β-elimination are obtained.Acetolysis of the related diazo ketones 2b,d bearing a tertiary nitrogen atom, leads to normal substitution of the diazo group exclusively, whereas with the corresponding secondary amides 2a,c,e a concurrent cyclization to the 3-azetidinones 9, 12 and 15 is observed.By decomposition of the same diazoketones 2a,c,e in the presence of catalytic amounts of Cu(CF3COCHCOCF3)2, the above 3-azetidinones are obtained in excellent yields.
Antitumor agents: diazomethyl ketone and chloromethyl ketone analogues prepared from N-tosyl amino acids
Sajadi,Kashani,Loeffler,Hall
, p. 275 - 278 (2007/10/02)
Diazomethyl ketone and chloromethyl ketone analogues prepared from N-tosyl amino acids have been synthesized and tested for antitumor activity in Ehrlich ascites carcinoma and P-388 lymphocytic leukemia screens in mice. The N-tosyl chloromethyl ketone ana
