Synthesis of naturally occurring (2S,3S)-(+)-aziridine-2,3-dicarboxylic acid.
作者:Johan Legters、Lambertus Thijs、Binne Zwanenburg
DOI:10.1016/s0040-4020(01)87140-4
日期:1991.1
followed by treatment with triphenylphosphine in N,N-dimethylformamide. Subsequent hydrolysis with lithium hydroxide and acidification with Dowex 50W-X2 (H+) afforded (2S,3S)-(+)-aziridine-2,3-dicarboxylic acid, which was identical in all respects to the natural product.
A Highly Efficient Organocatalyst for Direct Aldol Reactions of Ketones with Aldedydes
作者:Zhuo Tang、Zhi-Hua Yang、Xiao-Hua Chen、Lin-Feng Cun、Ai-Qiao Mi、Yao-Zhong Jiang、Liu-Zhu Gong
DOI:10.1021/ja0510156
日期:2005.6.1
prepared and evaluated for catalyzing the directAldolreaction of 4-nitrobenzaldehyde with acetone. Catalysts with strong electron-withdrawing groups are found to exhibit higher catalytic activity and enantioselectivity than their analogues with electron-donating groups. The presence of 2 mol % catalyst 4g significantly catalyzes the directAldolreactions of a wide range of aldehydes with acetone
Base promoted isomerization of aziridinyl ethers: a new access to α- and β-amino acidsElectronic supplementary information (ESI) available: experimental procedures and NMR data. See http://www.rsc.org/suppdata/cc/b2/b200708h/.
Aziridinyl ethers are selectively and easily converted to either amino vinyl ethers or alkoxy allylamines by treatment with mixed metal bases (superbases).
Synthesis of 3-Hydroxylated Analogues of D-Aspartic Acid β-Hydroxamate
作者:F. Burgat Charvillon、R. Amouroux
DOI:10.1080/00397919708006039
日期:1997.2
The two isomers (2R,3R) and (2R,3S) of 3-hydroxy-D-aspartic acid beta-hydroxamate were synthesised from diethyl tartrates via the corresponding diethyl 3-hydroxyaspartates.