715-39-9Relevant articles and documents
2,2,6,6-Tetramethylpiperidine-catalyzed, ortho-selective chlorination of phenols by sulfuryl chloride
Saper, Noam I.,Snider, Barry B.
, p. 809 - 813 (2014/04/03)
2,2,6,6-Tetramethylpiperidine (TMP)-catalyzed (1- 10%) chlorinations of phenols by SO2Cl2 in aromatic solvents are more ortho selective than with primary and less hindered secondary amine catalysts. Ortho-selective chlorination is successful even with electron deficient phenols such as 2-hydroxybenzaldehyde and 2'- hydroxyacetophenone. Notably, ortho selectivity increases with the reaction temperature. On the other hand, tetraalkylammonium chloride-catalyzed chlorinations are moderately para selective.
STRUCTURES OF MELLEOLIDES B-D, THREE ANTIBACTERIAL SESQUITERPENOIDS FROM ARMILLARIA MELLEA
Arnone, Alberto,Cardillo, Rosanna,Nasini, Gianluca
, p. 471 - 474 (2007/10/02)
Key Word Index-Armillaria mellea; Basidiomycete; secondary metabolites; protoilludane derivatives; structural determination.The structures of melleolides B-D, three new protoilludene sesquiterpenoid O-methylorsellinates isolated from a culture of Armillaria mellea, have been elucidated on the basis of chemical and spectral data.
Depsidone Synthesis. Part 16. Benzophenone-Grisa-3',5'-diene-2',3-dione-depsidone Interconversion: a New Theory of Depsidone Biosynthesis
Sala, Tony,Sargent, Melvyn V.
, p. 855 - 869 (2007/10/02)
The synthesis of a number of grisa-3',5'-diene-2',3-diones by oxidative coupling of substituted 2,2'-dihydroxy-4-methoxybenzophenones is described.The rearrangement of these grisadienediones to depsidones under basic, acidic, and thermal conditions is des