Synthesis of three cis-trans pairs of N-sulfonylated-2-aziridinemethanols starting from (S)-threonine, (R)-allothreonine, a chiral 2-amino alcohol, or enantiomerically enriched 2, 3-epoxy alcohols is described. A synthetic route to N-tosyl- and N-mesyl-2-aziridinemethanols from (R)- and (S)-serines is also presented.
An aza-Payne rearrangement-epoxide ring opening reaction of 2-aziridinemethanols in a one-pot manner: A regio- and stereoselective synthetic route to diastereomerically pure N-protected 1,2-amino alcohols
A regio- and stereoselectivesyntheticroute to diastereomericallypure1,2-aminoalcohols via a one-potaza-Payne rearrangement - epoxide ringopeningreaction of 2-aziridinemethanols is reported.
A one-pot aza-Payne rearrangement-epoxide ring opening reaction of 2-aziridinemethanols: A regio- and stereoselective synthetic route to diastereomerically pure 1,2-amino alcohols
A regio- and stereoselectivesyntheticroute to diastereomericallypure1,2-aminoalcohols via a one-potaza-Payne rearrangement — epoxide ringopeningreaction of 2-aziridinemethanols is reported. Satisfactory yields are obtained in excellent diastereoisomeric excesses by successive exposure of 2-aziridinemethanols to potassium hydride and nucleophilic reagents in a one-potmanner.
An aziridine route to chiral β-lactams a novel entry to (+)-thienamycin
作者:David Tanner、Peter Somfai
DOI:10.1016/s0040-4039(00)95328-0
日期:1987.1
Enantiomerically pure 2,3- epoxy alcohols are transformed readily and stereospecifically to the corresponding aziridines, regioselective ring-opening of which allows subsequent conversion to chiral β-lactams suitable for elaboration to the title antibiotic.
Enantioselective Bromoaminocyclization of Allyl <i>N</i>-Tosylcarbamates Catalyzed by a Chiral Phosphine–Sc(OTf)<sub>3</sub> Complex
作者:Deshun Huang、Xiaoqin Liu、Lijun Li、Yudong Cai、Weigang Liu、Yian Shi
DOI:10.1021/ja4010877
日期:2013.6.5
An effective enantioselectivebromoaminocyclization of allyl N-tosylcarbamates catalyzed by a chiral phosphine-Sc(OTf)3 complex is described. A wide variety of optically active oxazolidinone derivatives containing various functional groups can be obtained with high enantioselectivities.