Synthesis of N -substituted 4-hydroxynaphthalimides using palladium-catalysed hydroxylation
摘要:
Successful implementation of a palladium-mediated hydroxylation of N-substituted 4-chloro-1,8-naphthalimides has been achieved. The methodology detailed herein utilises 4-chloro-1,8-naphthalic anhydride as a starting point and implements the catalyst/ligand combination of Pd(OAc)(2)/t-BuXPhos; all of which are relatively inexpensive. A range of imide substituents tolerated the reaction conditions, including acid sensitive substrates which are not compatible with other existing methodology. As such this approach is not only complimentary to existing procedures, it presents a more direct alternative to accessing 4-hydroxy-1,8-naphthalimides. (C) 2015 Elsevier Ltd. All rights reserved.
METHODS AND COMPOSITIONS FOR TREATING BETA-THALASSEMIA AND SICKLE CELL DISEASE
申请人:ACADEMIA SINICA
公开号:US20160106728A1
公开(公告)日:2016-04-21
Compounds, pharmaceutical compositions, and methods for treating anemia β-thalassemia anemia or sickle cell anemia.
化合物、药物组合和治疗贫血β-地中海贫血或镰状细胞贫血的方法。
ANTHRAPYRIDONE COMPOUNDS
申请人:Chauhan Yogendrasinh Bharatsinh
公开号:US20080045634A1
公开(公告)日:2008-02-21
A compound of Formula (I):
wherein R
3
is an aromatic functionality selected from the group consisting of Formula II and Formula III:
and wherein R
1
, R
2
, R
5
, R
6
, R
7
, R
9
, and R
10
are independently selected from the group consisting of an aliphatic functionality having 1 to 6 carbon atoms, an aromatic functionality having 3 to 20 carbon atoms, a cycloaliphatic functionality having 3 to 20 carbon atoms, a hydroxy group, a halogen group, and a cyano group; R
4
is an aliphatic functionality having 1 to 6 carbon atoms; R
8
is an aliphatic functionality having 1 to 6 carbon atoms; “n” has a value of 0 to 4; “m” has a value of 0 to 2; “p” has a value of 0 to 2; “u” has a value of 0 to 2; “q” has a value of 0 to 3; “t” has a value of 0 to 4; and “r” has a value of 0 to 5.
Two solvent-polarity sensitive fluorescent logic gates with benzo-15-crown-5 or benzo-18-crown-6 and piperazine receptors display TRANSFER logic in water and AND logic in methanol.
两种对溶剂极性敏感的荧光逻辑门具有苯并-15-冠醚-5 或苯并-18-冠醚-6 和哌嗪受体,在水中显示 TRANSFER 逻辑,在甲醇中显示 AND 逻辑。
Akiyoshi; Tsuge, Kogyo Kagaku zasshi / Journal of the Society of Chemical Industry, 1953, vol. 56, p. 533;
作者:Akiyoshi、Tsuge
DOI:——
日期:——
KAZHOKA, X. A.;MEJROVITS, I. A., IZV. AN LATVSSR. CEP. XIM., 1983, N 3, 363-366