111726-50-2Relevant academic research and scientific papers
Derivatives of benzofuran or benzodioxole
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, (2008/06/13)
An oxygen-containing heterocyclic compound represented by following Formula (I): wherein R1and R2independently represent hydrogen, lower alkyl, cyano, —(CH2)n—E1—CO—G1(wherein E1represents a bond, O, or NH; and G1represents hydrogen, substituted or unsubstituted lower alkyl, OR6, or NR7R8; and n represents an integer of 0 to 4), or the like; R1and R2are combined to represent a saturated carbon ring together with a carbon atom adjacent thereto; or R2, and R11or R13described below are combined to form a single bond; R3represents hydrogen, phenyl, or halogen; R4represents hydroxy, lower alkoxy, or the like; A represents —C(R9)(R10)— or O; B represents O, NR11, —C(R12)(R13)—, or —C(R14)(R15)—C(R16)(R17)—; D represents (i) —C(R18)(R19)—X— (wherein X represents —C(R21)(R22)—, S, or NR23), (ii) —C(R19a)═Y— [Y represents —C(R24)—Z— (wherein Z represents CONH, CONHCH2, or a bond), or N], or (iii) a bond; and R5represents aryl, an aromatic heterocyclic group, cycloalkyl, pyridine-N-oxide, cyano, or lower alkoxycarbonyl; or pharmaceutically acceptable salts thereof.
A general synthesis of dihydrobenzofurans by intramolecular conjugate addition
Weeratunga, Gamini,Jaworska-Sobiesiak, Alina,Horne, Stephen,Rodrigo, Russel
, p. 2019 - 2023 (2007/10/02)
ortho Iodophenoxy crotonates 3e-7e cyclize to dihydrobenzofurans 1 and 9-12 when subjected to lithium-iodine exchange at -100 deg C.Naphtofuran 13 can be similarly obtained from α-iodonaphtoxy crotonate 8e.Methylation of this reaction mixture in
