✍ Scribed by Frances Heaney; Elaine Lawless
No coin nor oath required. For personal study only.
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2‐Vinyl quinazoline 3‐oxides 6a, 6b and 15a are useful modular building blocks for the construction of a range of heterocycles with potential biological activity, from o‐[amidoalkenyl]aryloximes 5a, 5b and 14a, respectively, by cyclocondensation. Conjugate addition of EtOH or MeOH to the vinyl moiety of 6b is demonstrated.
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Pteroylglutamic acid was labeled with deuterium by trifluoroacetic acid-catalyzed exchange with deuterium oxide. The product, pteroylglutamic acid-3',5'-H2, was selectively labeled with deuterium in the 4-aminobenzoyl portion of the molecule; there was no evidence for isotope incorporation at C or
## Abstract Tetrahydro‐2__H__‐pyrrolo[1,2‐__c__]quinazoline‐3‐ones are easily obtained from the Friedel‐Crafts cyclization of __N__‐arylaminomethyl pyroglutamic acids. This reaction occurrs __via__ an acyliminium salt formed by decarboxylation of the acid function.
## Abstract ChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 100 leading journals. To access a ChemInform Abstract of an article which was published elsewhere, please select a “Full Text” option. The original article is trackable v
## Abstract magnified image A simple preparation of ethyl 2,5‐dimethylfuran‐3‐carboxylate (**3**), 2,5‐dimethylfuran‐3,4‐dicarboxylic acid (**4**), and diethyl 2,5‐dimethylfuran‐3,4‐dicarboxylate (**5**) by treatment of diethyl 2,3‐diacetylsuccinate (**2**) with aqueous HCl is reported. The reacti