N-(3-Cyanoprop-2-ynyl)carbazole: synthesis, crystal structure, and solid-state reactivity
作者:Ulf Drechsler、Daniel J. Sandman、Bruce M. Foxman
DOI:10.1039/b007807g
日期:——
N-(3-Cyanoprop-2-ynyl)carbazole (1)
was synthesized in 30% yield by reaction of N-(3-bromoprop-2-ynyl)carbazole
(2) with cuprous cyanide in tetrahydrofuran,
or by reaction of lithiated N-(prop-2-ynyl)carbazole (3) with 1-cyanobenzotriazole in 70% yield. Grown
from hexane–dichloromethane solution, compound 1
crystallizes in the orthorhombic space group P212121,
with a = 6.5553(6), b = 11.3879(25), c = 16.2752(24) Å, V = 1215.0(3) Å3, and Z = 4.
The title compound undergoes a thermally induced solid-state oligomerization,
largely following a 1,2-addition pathway, consistent with the arrangement
of molecules observed in the crystal structure.
N-(3-氰基丙-2-炔基)咔唑 (1)
通过N-(3-溴丙-2-炔基)咔唑反应合成,收率30%
(2)与氰化亚铜的四氢呋喃溶液,
或通过锂化N-(丙-2-炔基)咔唑(3)与1-氰基苯并三唑反应,产率70%。长大了
来自己烷-二氯甲烷溶液,化合物 1
在斜方空间群 P212121 中结晶,
其中 a = 6.5553(6)、b = 11.3879(25)、c = 16.2752(24) Å、V = 1215.0(3) Å3 和 Z = 4。
标题化合物经历热诱导固态低聚,
很大程度上遵循 1,2-加成途径,与排列一致
晶体结构中观察到的分子。