Diels; Alder, Justus Liebigs Annalen der Chemie, 1934, vol. 510, p. 103 - 108
摘要:
DOI:
作为产物:
描述:
吡啶 、 丁炔二酸二甲酯 以
neat (no solvent) 为溶剂,
以45%的产率得到tetramethyl 9aH-quinolizine-1,2,3,4-tetracarboxylate
参考文献:
名称:
2-芳基-4,5-二氢-1 H -1,2,4-三唑的合成及荧光行为
摘要:
在吡啶存在下于甲苯中,由胺酮和乙炔二羧酸酯合成了一系列新的4,5-二氢-1 H -1,2,4-三唑。通过1 H,13 C NMR,FT-IR光谱分析和XRD数据对合成的化合物进行表征。光学研究表明,此处报道的大多数化合物在丙酮照射下均会发出蓝光或绿黄光,并且斯托克斯位移在70-96 nm范围内,量子产率高达45%。对实验结果的解释得到了最先进的量子力学计算的支持。
A simple and efficient method was developed for the reaction of dimethyl acetylenedicarboxylate with benzothiazole, isoquinoline, quinoline, 3‐bromopyridine, pyridine, benzoxazole, benzimidazole, and 5,6‐dimethyl benzimidazole for the high‐yield synthesis of the related heterocyclic products (1, 2, 3, 4, 5, 6, 7, 8) in very short reaction time under neat procedure. The reaction of isoquinoline, 3‐bromopyridine
One-Pot Synthesis of 2H-Quinolizine and 1H-Pyrido[1,2-a]qinoline Derivatives by Using Dialkylcarbodiimides
作者:S.S. Ghafouri、M. Amir Afshari、N. Saeedi、H. Djahaniani、B. Mohtat
DOI:10.14233/ajchem.2013.13772
日期:——
Reaction of the zwitter ions generated from pyridine and dialkylacetylene dicarboxylate with electron-deficient dialkylcarbodiimides lead to substituted 2H-quinolizines.
Efficient one-pot synthesis of 2-oxo-1,9a-dihydro-2H-pyrido[1,2-a]pyrimidine derivatives
作者:Mehdi Adib、Hossine Yavari、Mehdi Mollahosseini
DOI:10.1016/j.tetlet.2003.12.082
日期:2004.2
Pyridines react smoothly with dialkyl acetylenedicarboxylates in the presence of isocyanates to produce dialkyl 2-oxo-1,9a-dihydro-2H-pyrido[1,2-a]pyrimidine 3,4-dicarboxylates in excellent yields.
吡啶在异氰酸酯的存在下与乙炔基二羧酸二烷基酯平稳反应,以优异的收率生产出2-氧代-1,9a-二氢-2 H-吡啶并[1,2 - a ]嘧啶3,4-二羧酸二烷基酯。
Carbon-13 chemical shifts and carbon-proton coupling constants in 4H- and 9aH-quinolizine esters and some of their methyl derivatives
作者:Krystyna Kamieńska-Trela、W. T. Raynes、B. F. Taylor
DOI:10.1002/mrc.1260250503
日期:1987.5
The proton coupled and decoupled 13C NMR spectra of 4H‐quinolizine 1,2,3,4‐tetracarboxylate and its less stable tautomer 9aH‐quinolizine 1,2,3,4‐tetracarboxylate have been investigated. All 13C resonances have been assigned, and a number of the one‐, two‐ and three‐bond carbon‐proton coupling constants obtained for these compounds and some of their methyl derivatives. The principal conclusion from