期刊
CHEMISTRYSELECT
卷 2, 期 24, 页码 7382-7386出版社
WILEY-V C H VERLAG GMBH
DOI: 10.1002/slct.201701348
关键词
electron-deficient alkyne; Huisgen's 1,4-dipole; isoquinoline; pyrido[2-1-a]isoquinoline; spiro compound
资金
- National Natural Science Foundation of China [21572196]
- Priority Academic Program Development of Jiangsu Higher Education Institutions
The three-component reaction of isoquinoline, dimethyl acetylenedicarboxylate and arylidene pivaloylacetonitrile in acetonitrile at room temperature afforded pyrido[2,1-a]isoquinolines 1a-1j in good yields and with high diastereoselectivity. When arylidene-substituted 1,3-indanediones, Meldrum acids, and N,N'-dimethylbarbituric acids were employed in the reaction, the novel functionalized spiro[indene-2,1-pyrido[2,1-a]isoquinolines] 2a-2j, spiro[pyrido[2,1-a]isoquinoline-1,5-[1,3]dioxanes] 3a-3h and spiro[pyrido[2,1-a]isoquinoline-1,5-pyrimidines] 4a-4e were also efficiently synthesized in satisfactory yields. The reaction mechanism included domino formation of Huisgen's 1,4-dipole, Michael addition and cyclization processes.
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