Journal of Organic Chemistry p. 5127 - 5132 (1985)
Update date:2022-07-30
Topics:
Boyle, Peter H.
Lockhart, Ronan J.
Reaction of 5-amino-7-(methylthio)furazano<3,4-d>pyrimidine (4) with a range of alcohols in the presence of bromine leads to the formation of the corresponding 5-amino-7-alkoxyfurazano<3,4-d>pyrimidines (5-10).These on hydrogenolysis afford 6-alkoxy-2,4,5-triaminopyrimidines, which can be condensed with benzil to give 2-amino-4-alkoxypteridines (17-21).The product from hydrogenolysis of 5-amino-7-(2-chloroethoxy)furazano<3,4-d>pyrimidine (7), however, undergoes intramolecular cyclization to a 2,3-dihydrooxazolo<3,2-c>pyrimidinium compound (23), which behaves as a heteronuclear resonance stabilized ambident cation.Reaction of it with nucleophiles followed by condensation with benzil leads to N3-substituted pteridines.
View MoreXinjiang Fufeng Biotechnologies Co., Ltd.
Contact:+86-539-7287111
Address:GANQUANPU INDUSTRIAL PARK, ECONOMIC AND TECHNOLOGICAL DEVELOPMENT AREA (TOUTUNHE DISTRICT) OF URUMQI
Kunshan Yalong Trading Co,.Ltd
Contact:86-512-57621185
Address:805-807 Room Hongqiao Mansion ,1088 West Qianjin Road, Kunshan, Jiangsu,China
Shanghai Send Pharmaceutical Technology Co., Ltd.
website:http://www.shsendpharma.com
Contact:021-58088081, +8613585868794
Address::Room A601, Building 1,NO. 800 Qingdai Road Pudong District Shanghai,China
Nanjing Raise Pharmatech Co., Ltd
website:http://www.raisechem.com
Contact:+86-25-58649566
Address:B381,No.606,Ningliu Road,Jiangbei New Area,Nanjing,Jiangsu Province,China
Hangzhou Gangjin Chemical Co.,Ltd.(expird)
Contact:+86-571-85109780
Address:707 Zhejiang Minhang Bldg., No.290 Zhongshan North Road, Hangzhou 310003, China
Doi:10.1016/0022-1139(96)03444-6
(1996)Doi:10.1021/jacs.1c06228
(2021)Doi:10.1021/jo01118a009
(1956)Doi:10.1007/BF00956082
()Doi:10.1002/chem.201902095
(2019)Doi:10.1007/BF00504400
(1985)