一系列氟化三芳基硼酸盐 B(OAr F ) 3 (Ar F = 2-FC 6 H 4 , 3-FC 6 H 4 , 4-FC 6 H 4 , 2,4-F 2 C 6 H 3 , 3, 5-F 2 C 6 H 3 , 2,3,4-F 3 C 6 H 2 , 2,4,6-F 3 C 6 H 2 , 3,4,5-F 3 C 6 H 2) 已从单氟苯酚、二氟苯酚或三氟苯酚与 BCl 3的反应中制备和分离出来。这些硼酸盐的路易斯酸度已通过核磁共振光谱和理论方法确定,并与公认的硼烷对应物进行了比较。
Copper-catalyzed electrophilic amination using N-methoxyamines
作者:Yutaro Fukami、Takamasa Wada、Tatsuhiko Meguro、Noritaka Chida、Takaaki Sato
DOI:10.1039/c5ob02167g
日期:——
Copper-catalyzed electrophilic amination using functionalizedN-methoxyamines, prepared by nucleophilic addition toN-methoxyamides, is reported.
使用功能化的N-甲氧胺进行铜催化的电亲合胺化反应,该N-甲氧胺是通过亲核加成到N-甲氧酰胺制备的。
The Synthesis of a New Family of Boron‐Based Anion Receptors and the Study of Their Effect on Ion Pair Dissociation and Conductivity of Lithium Salts in Nonaqueous Solutions
作者:H. S. Lee、X. Q. Yang、C. L. Xiang、J. McBreen、L. S. Choi
DOI:10.1149/1.1838719
日期:1998.8.1
solutions containing the following lithium salts: LiF, LiCl, LiBr, LiI, CFsub3}COOLi, and Csub 2}Fsub5}COOLi. Without the additive the solubility of LiF in DME (and all other nonaqueous solvents) is very low. With some of these boron compounds as additives, LiF solutions in DME with concentration as high as 1 M were obtained. The solubilities of the other salts were also increased by these additives
This invention is to provide a compound of the formula:
wherein R1 is an optionally substituted 5- to 6-membered ring; the ring A is an optionally substituted 6- to 7-membered ring; the ring B is an optionally substituted benzene ring; n is an integer of 1 or 2; Z is a chemical bond or a divalent group; R2 is (1) an optionally substituted amino group in which a nitrogen atom may form a quaternary ammonium, (2) an optionally substituted nitrogen-containing heterocyclic ring group which may contain a sulfur atom or an oxygen atom as ring constituting atoms and wherein a nitrogen atom may form a quaternary ammonium, (3) a group binding through a sulfur atom or (4) a group of the formula:
wherein k is 0 or 1, and when k is 0, a phosphorus atom may form a phosphonium; and R5 and R6 are independently an optionally substituted hydrocarbon group, an optionally substituted hydroxy group or an optionally substituted amino group, and R5 and R6 may bind to each other to form a cyclic group together with the adjacent phosphorus atom, or a salt thereof , which is useful for antagonizing CCR5 and also for the prevention and treatment of infectious disease of HIV.