Formal [3+3] cycloaddition reaction of 4-hydroxythiocoumarin to 4Н-chromene-3-carbaldehydes: synthesis of thiochromeno[3',4':5,6]pyrano[2,3-b]chromen-6-ones

Formal [3+3] cycloaddition reaction of 4-hydroxythiocoumarin to 4Н-chromene-3-carbaldehydes: synthesis of thiochromeno[3',4':5,6]pyrano[2,3-b]chromen-6-ones

A cascade reaction of 4-hydroxythiocoumarin and 4Н-chromene-3-carbaldehydes was developed, consisting of Knoevenagel condensation and oxa-6π electrocyclization in the presence of ammonium acetate as catalyst. A series of polycyclic acetals containing a fused thiocoumarin moiety were obtained

में बचाया:

ग्रंथसूची विवरण
मुख्य लेखकों:	Demidov, O. P., Демидов, О. П.
स्वरूप:	Статья
भाषा:	English
प्रकाशित:	Springer 2020
विषय:	1H-benzo[f]chromene-2-carbaldehydes 4-hydroxythiocoumarin 4Н-chromene-3-carbaldehydes Electrocyclization Formal [3+3] cycloaddition Knoevenagel condensation
ऑनलाइन पहुंच:	https://dspace.ncfu.ru/handle/20.500.12258/14619
टैग :	टैग जोड़ें कोई टैग नहीं, इस रिकॉर्ड को टैग करने वाले पहले व्यक्ति बनें!

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Pseudo-five-component stereoselective synthesis of highly functionalized 3-azabicyclo[3.3.1]nona-2,7-dienes
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Electrophilic activation of nitroalkanes in efficient synthesis of 1,3,4-oxadiazoles
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Eco-friendly synthesis of fused pyrano[2,3-b]pyransviaammonium acetate-mediated formal oxa-[3 + 3]cycloaddition of 4H-chromene-3-carbaldehydes and cyclic 1,3-dicarbonyl compounds
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