New routes toward selective synthesis of both mono- and diaryl maleimides have been innovated. The mere requirement to this end is through the increase of temperature. The method works effectively for maleic anhydride and maleic acid as well. Also, the first expedient synthesis of 2-arylnaphthoquinones via the reaction of naphthoquinone with arenesulfonyl chlorides is revealed.
Peptide‐Catalyzed Stereoselective Conjugate Addition Reaction of Aldehydes to
<i>C</i>
‐Substituted Maleimides
作者:Greta Vastakaite、Claudio E. Grünenfelder、Helma Wennemers
DOI:10.1002/chem.202200215
日期:2022.3.28
transformation A peptide catalyst facilitated access to succinimides and downstream heterocycles with three contiguous stereogenic centers via stereo-, chemo- and regioselective conjugate additionreaction between aldehydes and C-substituted maleimides.
A method for screening chemical compounds for electrophilic properties comprising the steps of:
(a) providing an assay having one or more reaction vessels;
(b) adding a predetermined amount of separate chemical compounds for screening to each reaction vessel;
(c) adding a predetermined amount of a surrogate chemical marker to each reaction vessel and allowing said separate chemical compounds and surrogate chemical marker to incubate for a period of time;
(d) adding a reactive chemical to each reaction vessel which is capable of reacting with residual surrogate chemical marker such that the amount of residual surrogate chemical marker present after step (c) can be quantitatively or qualitatively measured; and
(e) quantitatively or qualitatively measuring said residual chemical marker is provided.
Difunctional oxazoline resins, which may be produced in a convenient one-step reaction from an arylalkylene dinitrile by reaction with an amino alcohol, are used in compositions with an additional curable compound or resin containing one or more carbon to carbon double bonds. The composition can be cured to a thermoset material, the curing mechanism occurring by the zwitterion polymerization of the bisoxazoline resin with the resin containing the one or more carbon to carbon double bonds. The reaction occurs without the need for curing initiators.(I).
This disclosure describes 3a-(substituted-phenyl)-2,3,3a,4,7,7a-hexahydro[or 3a-(substituted-phenyl)-octahydro]-4,7-alkano-1H-isoindoles which possess activity as anti-depressants and as antistress agents in mammals.