A versatile enantiospecific approach to 3-azetidinols and aziridines
摘要:
Treatment with triethylamine of mono- and dimesylates derived from N-diphenylmethyl 3-amino-1,2-diols of high enantiomeric purity affords 3-azetidinols or aziridines, respectively, in a stereospecific fashion.
Conversion of Aziridinemethanol Sulfonate Esters to Allylic Amines via Tellurium Chemistry<sup>1</sup>
作者:Aurora S. Pepito、Donald C. Dittmer
DOI:10.1021/jo962024n
日期:1997.11.1
Sulfonate esters of aziridinemethanols are converted to allylic amines by treatment with telluride ion obtained by reduction of elemental tellurium. In the course of the reaction, tellurium(0) is reformed and may be reused, thus removing the need to dispose of a key reagent. The telluride reaction yields optically active allylic amines from optically active aziridinemethanols. In contrast to many ring-openings
Regioselective ring opening of chiral epoxyalcohols by primary amines
作者:Marc Canas、Marta Poch、Xavier Verdaguer、Albert Moyano、Miquel A. Pericàs、Antoni Riera
DOI:10.1016/0040-4039(91)80447-e
日期:1991.11
A reinvestigation of the titanium(IV)-mediated reaction of primary amines with chiral 2,3-epoxyalcohols shows that, contrary to previous reports, this reaction constitutes a general and practical process for the enantioselective synthesis of 3-amino-1,2-diols.
A concise enantioselective synthesis of allylamines and N-boc-β-amino acids
作者:Montserrat Alcón、Marc Canas、Marta Poch、Albert Moyano、Miguel A. Pericàs、Antoni Riera
DOI:10.1016/s0040-4039(00)76766-9
日期:1994.3
A new and efficient enantioselectivesynthesis of allylamines and N-Boc-β-amino acids has been developed. Starting from enantiomerically enriched N-diphenylmethyl-3-amino-1,2-diols, allylamines are easily obtained by a Corey-Hopkins deoxygenative protocol. After a change in the nitrogen protecting group, the resulting N-Boc allylamines are converted into β-amino acids by hydroboration with 9-BBN followed
A short enantioselective synthesis of N-Boc-α-amino acids from epoxy alcohols
作者:Marta Poch、Montserrat Alcón、Albert Moyano、Miquel A. Pericàs、Antoni Riera
DOI:10.1016/s0040-4039(00)61565-4
日期:1993.11
acids has been developed. Starting from an enantiomerically enriched epoxy alcohol the sequence involves a regioselective nucleophilic epoxide opening by diphenylmethylamine (benzhydrilamine), hydrogenolysis/protection of the aminogroup, and oxidation of the diol moiety.