A facile approach for the synthesis of novel xanthene derivatives with Vilsmeier–Haack reagent
Sign Up to like & getrecommendations! Published in 2019 at "Chemistry of Heterocyclic Compounds"
DOI: 10.1007/s10593-019-02416-6
Abstract: A series of new derivatives of formylxanthenes have been synthesized via the reaction of substituted 1,3-benzoxazines with Vilsmeier–Haack reagent. It has been shown that 1,3-benzoxazines unsubstituted in the aromatic part and 6-bromo-1,3-benzoxazines are rearranged into… read more here.
Keywords: vilsmeier haack; xanthene derivatives; facile approach; haack reagent ... See more keywords
A novel synthetic approach for the synthesis of pyrano[3,2-c] quinolone-3carbaldehydes by using modified Vilsmeier Haack reaction, as potent antimicrobial agents
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DOI: 10.1016/j.molstruc.2018.11.030
Abstract: Abstract This research work is about the synthesis of pyranoquinolone-3carbaldehydes, heterocyclic compounds which were constructed by modifying Vilsmeier-Haack reaction. A leading approach towards green chemistry and successful methodology was devised during this research project for… read more here.
Keywords: haack reaction; vilsmeier haack; methodology; synthesis ... See more keywords
Synthesis of Methylene Bridged Bis-pyrrolo[3,2-c]carbazoles via an Unusual Vilsmeier–Haack Product of N-Ethylcarbazole
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DOI: 10.1080/10406638.2018.1458739
Abstract: ABSTRACT The unexpected result for the formylation of N-ethylcarbazole under the Vilsmeier–Haack conditions (POCl3/DMF) led to the synthesis of novel methylene bridged bis-pyrrolo[3,2-c]carbazoles via Hemetsberger indole synthesis was reported. A plausible mechanism for the formation… read more here.
Keywords: pyrrolo carbazoles; methylene bridged; bridged bis; vilsmeier haack ... See more keywords
Some Features of the Reaction of 6-Methyl-2S-substituted Pyrimidin-4-ols with the Vilsmeier–Haack Reagent
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DOI: 10.1134/s1070363220040301
Abstract: Abstract Formylation of 6-methyl-2 S -substituted pyrimidin-4-ols under the conditions of the Vilsmeier–Haack reaction leads to the formation of nucleophilic substitution products of the hydroxyl group. The formation of the expected formylation products does not… read more here.
Keywords: methyl substituted; substituted pyrimidin; pyrimidin ols; vilsmeier haack ... See more keywords