The reaction of (-)-1R- or (+)-1S-tricarbonyl(2-substituted benzaldehyde)chromium complexes with tert.-Bu methanesulfonamide dianion afforded, after decomplexation and intramol. cyclization, the enantiomerically pure N-tert-butyl-3-aryl-1,2-thiazetidine 1,1-dioxide derivs. The hydrolytic ring opening gave the corresponding enantiopure 1-aminosulfonic acid.
Stereoselective synthesis of β-sultams using chiral tricarbonyl(η6-arene)chromium(0) complexes / C. Baldoli, P. Del Buttero, D. Perdicchia, T. Pilati. - In: TETRAHEDRON. - ISSN 0040-4020. - 55:44(1999), pp. 14089-14096.
Stereoselective synthesis of β-sultams using chiral tricarbonyl(η6-arene)chromium(0) complexes
P. Del ButteroSecondo
;D. PerdicchiaPenultimo
;
1999
Abstract
The reaction of (-)-1R- or (+)-1S-tricarbonyl(2-substituted benzaldehyde)chromium complexes with tert.-Bu methanesulfonamide dianion afforded, after decomplexation and intramol. cyclization, the enantiomerically pure N-tert-butyl-3-aryl-1,2-thiazetidine 1,1-dioxide derivs. The hydrolytic ring opening gave the corresponding enantiopure 1-aminosulfonic acid.
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