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090			_aB-11462
245	1	0	_aThe synthesis of kermesic acid by acetylation-aided tautomerism of 6-chloro-2,5,8-trihydroxynaphtho-1,4-quinone
490	0		_vTetrahedron, 64(16), p.3471-3476, 2008
520	3		_aMethodology has been sought towards obtaining a 2-chloro-1,4-naphthoquinone bearing hydroxyl groups in the adjoining ring for obtaining either kermesic or carminic acids. In the first of these objectives, kermesic acid has been synthesised from 6-chloro-2,5,8-trihydroxynaphtho-1,4-quinone by the regioselective cycloaddition of the 1,2-diacetate formed by its acetylation-aided tautomerism and cycloaddition with (E)- and (Z)-3-alkoxycarbonyl-2,4-bis(trimethylsilyloxy)penta-1,3-dienes. The parent unacetylated quinone resists cycloaddition
700	1	2	_aBinghama, Steve J.
700	1	2	_aTyman, John H.P.
856	4	0	_uhttps://drive.google.com/file/d/1uWo_OT7fQBZvsqa3RhAe-BMudOK3bXVe/view?usp=drivesdk _zPara ver el documento ingresa a Google con tu cuenta: @cicy.edu.mx
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