The Synthesis of 7-Substituted-2,3-dihydropyrido [4,3-d] pyridazine-1,4-diones and 1,4-Dioxo-7-substituted1,2,3,4-tetrahydropyrido[4,3-d] pyridazine 6-Oxides from Methyl Ketones

被引:3
|
作者
Prek, Benjamin [1 ]
Stanovnik, Branko [1 ]
机构
[1] Univ Ljubljana, Fac Chem & Chem Technol, Vecna Pot 113,POB 537, Ljubljana 1000, Slovenia
关键词
methyl ketones; 7-substituted-2,3-dihydropyrido[4,3-d] pyridazine-1,4-diones; 1,4-dioxo-7-substituted1,2,3,4-tetrahydropyrido[4,3-d] pyridazine 6-oxides; ELECTRON-POOR ACETYLENES; METAL-FREE SYNTHESIS; 2+2 CYCLOADDITION; APLYSINOPSIN ANALOGS; N-OXIDES; DERIVATIVES; PYRIDINE; ENAMINONES; 3-(DIMETHYLAMINO)PROPENOATES; HETEROCYCLES;
D O I
10.17344/acsi.2017.3695
中图分类号
O6 [化学];
学科分类号
0703 ;
摘要
A general four-step transformation of alkyl, cycloalkyl, aryl, and heteroaryl methyl ketones via 3-(dimethylamino)-1-substituted- prop-2-en-1-ones, followed by microwave [2+ 2] cycloaddition of dimethyl acetylenedicarboxylate, cyclization of (2E, 3E)-2-[(dimethylamino) methylene]-3-(2-substituted) succinates with ammonia or hydroxylamine hydrochloride into 2-substituted-pyridine-4,5-dicarboxylates and their N-oxides and final cyclization with hydrazine hydrate into of 7-substituted-2,3-dihydropyrido[3,4-d] pyridazine-1,4-diones and 1,4-dioxo-7-substituted-1,2,3,4-tetrahydropyrido[4,3-d] pyridazine 6-oxides is shown.
引用
收藏
页码:798 / 803
页数:6
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