Chemistry of Heterocyclic Compounds p. 1210 - 1214 (1993)
Update date:2022-08-11
Topics:
Kolos, N. N.
Orlov, V. D.
Yur'eva, E. Yu.
Zhidkova, E. V.
The condensation of 4-hydroxy-5,6-diaminopyrimidine with 1,3-diaryl-2,3-dihalopropanones and with dibenzoylacetylenes was used to obtain derivatives of 1H-pyrimido<4,5-b>-1,5-diazepine and pyrimido<4,5-b>pyrazine, respectively.Their spectral characteristics were studied, and the directions in the formation of 7- and 6-membered heterocycles were determined.The synthesized pyrimido<4,5-b>pyrazines exist in the form of two tautomeric species - enaminocarbinol and enol forms, with an intramolecular hydrogen bond of the chelate type.
View MoreShanghai Hongbang Medical Technology CO.,. Ltd
Contact:13671516988 /18917636693
Address:Room1, No67 Building, Yongde Road369, Wujing Town, Minhang Districy, Shanghai CIty, China.
Contact:+86-21-38122007
Address:2, Lane 1123, Kangqiao Road, Pudong New Area, Shanghai
website:http://www.gihichemicals.com
Contact:+86-571-86217390
Address:No.567 Dengcai Street,Sandun,Westlake District,Hangzhou310030,Zhejiang,China.
Angelisun(Chongqing) Pharmaceutical Co., LTD.
Contact:+86-23-68030926-816
Address:D1-7 Tech & Entrepreneurs Park, Kecheng Road, Erlang Hi-Tech Areas, Chongqing, China
Zhejiang PRIMAR Import & Export Trade Co., Ltd.
Contact:86-570-3630818
Address:No.1Puzhuyuan,Quhua,Zhejiang Province,China324004
Doi:10.1080/00397919808003065
(1998)Doi:10.1016/S0960-894X(02)00657-1
(2002)Doi:10.1016/j.jorganchem.2015.11.010
(2016)Doi:10.1021/ol0266931
(2002)Doi:10.1021/ja01183a116
(1948)Doi:10.4314/bcse.v30i2.12
(2016)