14013-11-7Relevant articles and documents
N1-substituted hypoxanthine derivatives from the reaction of 6-halopurines with Michael acceptors under the conditions of Heck reaction
Havelkova, Martina,Studenovsky, Martin,Dvorak, Dalimil
, p. 797 - 804 (2000)
The reaction of 6-iodo-, 9-benzyl-6-chloropurine and 7-benzyl-6-chloropurine with butyl acrylate, acrylonitrile, methyl vinyl ketone or methyl methacrylate under conditions of the Heck reaction in the presence of TlOAc or AgOAc afforded N1-alky
Synthetic studies on compounds related to aminoimidazolecarboxamide: Synthesis of angularly fused purine derivatives and a solid phase ring transformation (ANRORC) to imidazo [1,5-a] pyrazine
Chattopadhyay, Gautam,Ray, Parlha Sinha
, p. 546 - 552 (2013/06/26)
l-Benzyl-5-aminoimidazole-4-carboxamide la has been used as a convenient precursor for the synthesis of new triazolo [3,4-i] purines 6 and the corresponding tetrazolo analogue 7. A mesoionic isomer 8 seems to exist along with 7. Interesting heteroaryl-purine motifs have also been prepared via suitably substituted 9-benzyIpurines. Imidazo |I,5-a| pyrazine derivative has been prepared in a solid phase exploitation of suitable imidazolium salt via ANRORC.
Synthesis of N-aryl uracils and hypoxanthines and their biological properties
Maruyama, Tokumi,Kozai, Shigetada,Uchida, Mayuko
, p. 661 - 671 (2007/10/03)
1-Benzyluracils 2a,b were treated with iodobenzene in the presence of cuprous oxide in 2,4,6-trimethylpyridine at 180°C to give the N1-phenyl derivatives 3a and 3b in 47% and 55%, respectively. Similar reaction of 2a with 2-bromopyridine at 120°C gave the 3-(2-pyridinyl)uracil 4a in 42% yield. However, unusual product 5 as well as 3-(2-pyridinyl) derivative 4b were obtained in the case of 2b. The structure of 5 was identified as 1- (2,6-difluorobenzyl)-3-[(2,4-dimethyl-2-pyridinyl)methyl]uracil from spectroscopic data. Reaction of the hypoxanthines 7a, b with 2-bromopyridine gave the 1-(2-pyridinyl)hypoxanthines 8a, b in low yields. But N-phenylation of 7a,b were unsuccessful.