WebSep 14, 2024 · A Brønsted acid catalyzed tandem process to access densely functionalized chromeno[3,2-d]isoxazoles with good to excellent yields and diastereoselectivities was disclosed. The procedure is proposed to involve a 1,6-conjugate addition/electrophilic addition/double annulations process of alkynyl o-quinone methides … WebJan 20, 2024 · A new series of densely functionalized fused-benzoquinones was synthesized through a straight three-component reaction. ... MTT assay was performed …
Diastereoselective Synthesis of Chromeno [3,2-d
WebDec 1, 2015 · Request PDF On Dec 1, 2015, Ying Xu and others published Densely Functionalized Biodegradable Polymers Find, read and cite all the research you need on ResearchGate WebJun 14, 2024 · A new strategy for access to spirocyclopentenonyl oxindole frameworks is disclosed. Suitably anchored furfuryl alcohol at C3 of an oxindole was used for the aza-Piancatelli rearrangement, which furnished spirocyclic aminocyclopentenone frameworks with catalytic phosphomolybdic acid. The scope of the transfor go food lollies
One-pot facile and mild construction of densely functionalized ...
WebFused pyrimidines composed of alternating heteroatoms and a pyrimidine moiety were synthesized efficiently using readily available starting material 4-hydroxycoumarin, aromatic aldehydes, and urea/thiourea at room temperature. Acid, metal salts, and surfactants were screened for their influence on catalytic activit WebNov 8, 2024 · A catalytic enantioselective three-component reaction of 1, 2 and ortho -hydroxybenzhydryl alcohols 4 was subsequently developed furnishing the densely functionalized hexahydroxanthenes 5 in a highly stereoselective manner. This multicomponent reaction generates four chemical bonds with concurrent creation of five … WebFeb 5, 2024 · A photoredox-catalyzed iminoalkenylation of γ-alkenyl O-acyl oximes has been developed. Readily available alkenylboronic acids serve as alkenylation reagents, leading to densely functionalized pyrrolines. Both (E)- and (Z)-cinnamylpyrrolines are accessible depending on the reaction solvent. Two stereocenters are established with … gofood lollies nz