Ring Transformations of Cyclic Amine N-Imides
نویسندگان
چکیده
منابع مشابه
Preparation of pyrrolizinone derivatives via sequential transformations of cyclic allyl imides: synthesis of quinolactacide and marinamide.
A facile synthetic route has been developed for the preparation of pyrrolizinone derivatives employing N-allyl imides as starting materials. The nucleophilic addition of a vinyl Grignard reagent/RCM/elimination sequence afforded pyrrolizinones in good yields and has been applied for the preparation of naturally occurring quinolactacide and marinamide.
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The mechanochemical N-alkylation of imide derivatives was studied. Reactions under solvent-free conditions in a ball mill gave good yields and could be put in place of the classical solution conditions. The method is general and can be applied to various imides and alkyl halides. Phthalimides prepared under ball milling conditions were used in a mechanochemical Gabriel synthesis of amines by th...
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In this paper, we investigate the generalized Hyers-Ulam-Rassias and the Isac and Rassias-type stability of the conditional of orthogonally ring $*$-$n$-derivation and orthogonally ring $*$-$n$-homomorphism on $C^*$-algebras. As a consequence of this, we prove the hyperstability of orthogonally ring $*$-$n$-derivation and orthogonally ring $*$-$n$-homomorphism on $C^*$-algebras.
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0022-2860/$ see front matter 2011 Elsevier B.V. A doi:10.1016/j.molstruc.2011.04.016 ⇑ Corresponding author. E-mail address: [email protected] (O.V. Dipole moments (l), molar Kerr constants (mK) and molecular polarizabilities of several five-membered ring imides and a number of model compounds were measured. Various models for determination of molecular polarizability and mK values wer...
متن کاملZwitterionic bis(phenolate)amine lanthanide complexes for the ring-opening polymerisation of cyclic esters.
The reaction of Sm{N(SiMe3)2}3 with the bis(phenol)amines H2O2N(R) (H2O2N(R) = RCH2CH2N(2-HO-3,5-C6H2(t)Bu2)2; R = OMe, NMe2 or Me) gave exclusively zwitterions Sm(O2N(R))(HO2N(R)). For R = OMe or NMe2 these were efficient catalysts for the ring-opening polymerisation of epsilon-caprolactone and D,L-lactide with a tendency to form cyclic esters; in contrast, no polymerisation was observed for R...
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ژورنال
عنوان ژورنال: YAKUGAKU ZASSHI
سال: 1983
ISSN: 0031-6903,1347-5231
DOI: 10.1248/yakushi1947.103.4_373