290817-91-3Relevant academic research and scientific papers
Unusual stabilization of 1,2-diamino derivatives of quincorine and quincoridine by carbon dioxide: Persistent crystalline prim-ammonium-carbamate salts and their reactivity towards isatoic acid anhydride
Neda, Ion,Kaukorat, Thomas,Fischer, Axel K.
, p. 3784 - 3790 (2007/10/03)
The reaction of N-methylisatoic anhydride 1 with a series of quincorine (QCI) and quincoridine (QCD) derivatives furnished the corresponding QCI- and QCD-substituted anthranilic acid amides 4-9. In the synthesis of 4-9, we investigated the influence of th
Recalcitrant S(N)2 displacements at carbon C9 of quincorine and quincoridine: 1,2-Amino halides and mesylates with configurationally rigid nitrogen
Schrake, Olaf,Franz, M. Heiko,Wartchow,Hoffmann
, p. 4453 - 4465 (2007/10/03)
S(N)2 reactions at carbon C9 of Quincorine (QCI) and Quincoridine (QCD) were investigated and found to be difficult, due to the special structural ('β-amino effect') and conformational factors. Efficient experimental procedures for displacement with a variety of carbon and heteroatom nucleophiles were developed. (C) 2000 Elsevier Science Ltd.
