Cao, Feng-Xia; Zhao, Li-Ming published the artcile< Cyclization of 1,4-dihydroxyanthraquinone with α,β-unsaturated aldehyde: a new strategy for the synthesis of cyclopentanoids>, Category: bromides-buliding-blocks, the main research area is cyclopentanoid preparation dihydroxyanthraquinone cyclization alpha beta unsaturated aldehyde.
A cascade cyclization strategy was developed for the synthesis of cyclopentane-fused anthraquinones through the condensation of 1,4-dihydroxyanthraquinone with α,β-unsaturated aldehydes in the presence of common inorganic base NaOH. These fused-tetracyclic anthraquinone products are formed in a single step from readily accessible starting materials under very mild conditions without the use of any expensive or complex reagents. This method represents an unprecedented example of a base-promoted protocol to access five-membered carbocyclic rings in a single step. Moreover, this chem. also provides useful guidance for the preparation of 6,5-fused ring systems.
Tetrahedron Letters published new progress about Crystal structure. 3893-18-3 belongs to class bromides-buliding-blocks, and the molecular formula is C9H7BrO, Category: bromides-buliding-blocks.
Referemce:
Bromide – Wikipedia,
bromide – Wiktionary