One-Carbon Homologation of <i>N</i>-Sulfonylaziridines to Allylic Amines Using Dimethylsulfonium Methylide
作者:David M. Hodgson、Matthew J. Fleming、Steven J. Stanway
DOI:10.1021/ol051124p
日期:2005.7.1
[reaction: see text]. Regio- and stereodefined allylic N-sulfonylamines are synthesized in high yields and under experimentally straightforward conditions by reaction of N-sulfonylaziridines with excess dimethylsulfoniummethylide.
<i>tert</i>-Butylsulfonamide. A New Nitrogen Source for Catalytic Aminohydroxylation and Aziridination of Olefins
作者:Alexander V. Gontcharov、Hong Liu、K. Barry Sharpless
DOI:10.1021/ol990761a
日期:1999.9.1
[reaction: see text] The N-chloramine salt of tert-butylsulfonamide has been shown to be an efficient nitrogensource and the terminal oxidant for catalyticaminohydroxylation and aziridination of olefins, resembling closely Chloramine-T by its behavior in these catalytic reactions. The sulfonyl-nitrogen bond in the product or its derivatives is easily cleaved under mild acidic conditions, allowing
The reaction between configurably stable α-lithiated oxiranes and 3-substituted cyclobutanones allows obtaining enantiomerically enriched cyclobutanols (er > 98 : 2). These adducts, subjected to base-mediated Payne rearrangement, lead to the synthesis of a new class of oxaspirohexanes, useful precursors of 2,4-disubstituted cyclopentanones.
Synthesis of 2-Aminophosphates via S<sub>N</sub>2-Type Ring Openings of Aziridines with Organophosphoric Acids
作者:Yang Wang、Bing-Yi Liu、Gaosheng Yang、Zhuo Chai
DOI:10.1021/acs.orglett.9b01302
日期:2019.6.21
The synthesis of 2-aminophosphates is achieved by a SN2-type ringopening reaction of various N-protected or free aziridines with phosphoric acids in a regiospecific and/or enantiospecific way. A one-pot, two-step procedure is also developed enabling direct access to 2-aminophosphates from olefins without isolation of the aziridine intermediates.
通过各种N-保护的或游离的氮丙啶的S N 2型开环反应以区域特异性和/或对映体特异性的方式实现磷酸2-氨基磷酸酯的合成。还开发了一种一锅两步的方法,无需分离氮丙啶中间体即可直接从烯烃获得2-氨基磷酸酯。
Stereocontrolled Synthesis of β-Amino Alcohols from Lithiated Aziridines and Boronic Esters
作者:Frank Schmidt、Florian Keller、Emeline Vedrenne、Varinder K. Aggarwal
DOI:10.1002/anie.200805272
日期:2009.1.26
β‐Amino alcohols have been prepared with high selectivity by the addition of lithiatedaziridines to boronic esters. The regioselectivity of lithiation for aryl aziridines is sensitive to the reaction conditions and to the base employed. This response was exploited to give either class of β‐amino alcohols (see scheme; Boc=tert‐butoxycarbonyl, Bus=tert‐butylsulfonyl, LTMP=lithium 2,2,6,6‐tetramethylpiperidide