Effects of Chirality on the Antifungal Potency of Methylated Succinimides Obtained by Aspergillus fumigatus Biotransformations. Comparison with Racemic Ones
A metal‐free dehydrogenative Diels‐Alderreaction of substituted alkenes for the synthesis of tetrahydroisoindolinones has been exploited for the first time. This new method features functional group tolerance and broad substrate scope, providing an efficient access to biologically active tetrahydroisoindolinone skeletons with endo steroselectivity in good to excellent yields.
Synthesis and Photolysis of Hexahydropyrrolo[3,4-<i>c</i>]pyrazole derivatives
作者:Naoufel Ben Hamadi、Nesrine Louhichi、Moncef Msaddek
DOI:10.3184/030823407x255515
日期:2007.10
The 1,3-dipolar cycloaddition of 2-diazopropane 1 with N-arylcitraconimides and N-arylmaleimides 2, at −78°C, has led to monoadducts 3. The same addition of 2-diazopropane with maleimide 4, has led to a new and unexpected Δ3-1,3,4-oxadiazoline 5. Irradiation of the pyrazolines 3 led to clean extruction of nitrogen to give the cyclopropanes 6.
Citraconimide (co)polymers and curing with anionic catalyst
申请人:Akzo Nobel N.V.
公开号:EP0495545A1
公开(公告)日:1992-07-22
A process for the preparation of a (co)polymer containing at least one unit derived from a citraconimide by curing curable composition comprising at least one substituted or unsubstituted citraconimide and a sufficient amount of an anionic curing catalyst to convert at least 10% of the citraconic alkyl groups on the citraconimide units to alkylene bridges; at a temperature above the melting point of the citraconimide unit and the product of that curing process, are disclosed. The invention also relates to the cured oligomers and articles of manufacture embodying them. These novel, cured oligomers are thermoplastic and offer several advantageous properties.