Cross Coupling of Substituted Anilines with Quinoline: Synthesis and Structural Characterization of HN(py)quin, PhN(py)quin, MesN(py)quin, and [PhN(py)(H-quin)]BF4
作者:John J. Allen、Christopher E. Hamilton、Andrew R. Barron
DOI:10.1007/s10870-009-9616-y
日期:2010.2
The molecular structure of RN(py)quin, with R=H (1), Ph (2), and Mes (3) and the protonated complex [PhN(py)(H-quin)]BF4 (4) have been determined. Compounds 2 and 3 both crystallize in a three bladed propeller conformation. Any π–π stacking observed is dominated by quinolyl···quinolyl stacks. In contrast to analogous derivatives the acidic proton in compound 4 is chelated by the pyridyl and quinolyl heterocycles in an asymmetric fashion. Crystal data: 1 group P21/c, a = 11.571(2), b = 6.116(1), c = 15.585(3) Å, β = 90.00(3)°, V = 1103.0(4) Å3, Z = 4, R = 0.0440, wR 2 = 0.1064. 2 group P21/n, a = 8.081(1), b = 13.920(3), c = 27.697(6) Å, β = 96.50(3)°, V = 3095(1) Å3, Z = 8, R = 0.0495, wR 2 = 0.1174. 3 group P21/c, a = 12.359(3), b = 12.585(3), c = 12.457(3) Å, β = 104.09(3)°, V = 1879.4(7) Å3, Z = 4, R = 0.0709, wR 2 = 0.1692. 4 group P21/c, a = 15.308(3), b = 7.585(1), c = 17.227(3) Å, β = 113.43(3)°, V = 1835.5(7) Å3, Z = 4, R = 0.0536, wR 2 = 0.1341. The molecular structure of RN(py)quin, with R=H, Ph, and Mes, and the protonated complex [PhN(py)(H-quin)]BF4 have been determined. The presence of π–π stacking observed is dominated by quinolyl···quinolyl rather than pyridyl···quinolyl or pyridyl···pyridyl interactions.
已经确定了RN(py)quin的分子结构,其中R=H(1)、Ph(2)和Mes(3),以及质子化的复合物[PhN(py)(H-quin)]BF4(4)。化合物2和3均以三片桨叶旋转构型结晶。观察到的任何π–π堆叠主要由
喹啉基···
喹啉基堆叠主导。与类似衍
生物相比,化合物4中的酸性质子是通过
吡啶环和
喹啉环以不对称的方式螯合。晶体数据:1组P21/c,a = 11.571(2),b = 6.116(1),c = 15.585(3) Å,β = 90.00(3)°,V = 1103.0(4) ų,Z = 4,R = 0.0440,wR² = 0.1064。2组P21/n,a = 8.081(1),b = 13.920(3),c = 27.697(6) Å,β = 96.50(3)°,V = 3095(1) ų,Z = 8,R = 0.0495,wR² = 0.1174。3组P21/c,a = 12.359(3),b = 12.585(3),c = 12.457(3) Å,β = 104.09(3)°,V = 1879.4(7) ų,Z = 4,R = 0.0709,wR² = 0.1692。4组P21/c,a = 15.308(3),b = 7.585(1),c = 17.227(3) Å,β = 113.43(3)°,V = 1835.5(7) ų,Z = 4,R = 0.0536,wR² = 0.1341。RN(py)quin的分子结构及质子化复合物[PhN(py)(H-quin)]BF4已经确定。观察到的π–π堆叠主要由
喹啉基···
喹啉基堆叠主导,而非
吡啶基···
喹啉基或
吡啶基···
吡啶基的相互作用。