4389-44-0Relevant academic research and scientific papers
NOVEL AND SELECTIVE SYNTHESES OF NEW ANALOGUES OF PRECOCENE-2 AND PRECOCENE-3 CONTAINING 5-METHYL- OR 8-METYL-SUBSTITUENTS
Timar, Tibor,Seboek, Peter,Eszenyi, Tibor,Jaszberenyi, Joseph Cs.
, p. 2719 - 2728 (2007/10/02)
New analogues of precocene-2 and precocene-3 containing 5-methyl- or 8-methyl-substituents have been synthesised in good yields utilising regioselective O-alkylation of 6,7-dihydroxy-2,2,5-trimethyl-4-chromanone and 6,7-dihydroxy-2,2,8-trimethyl-4-chromanone as the key step.
A NEW SYNTHESIS OF 1,2,4-BENZENETRIOL CONGENERS
Ozaki, Yutaka,Kim, Sang-Won
, p. 304 - 307 (2007/10/02)
1,2,4-Benzenetriols were synthesized via 4,4-bis(ethylthio)-1,3-cyclohexanediones which were prepared by means of two types of Michael-Claisen condensation starting from methyl bis(ethylthio)acetate or 1,1-bis(ethylthio)-2-propanone.Keywords- annelation; aromatic synthesis; 1,2,4-benzenetriol; methyl bis(ethylthio)acetate; 1,1-bis(ethylthio)-2-propanone; C2+C4 annelation; C3+C3 annelation; Michael-Claisen condensation; α,β-unsaturated ester; dibenzofurandiol
A New Entry to 1,2,4-Benzenetriol Congeners
Ozaki, Yutaka,Kim, Sang-Won
, p. 1199 - 1200 (2007/10/02)
1,2,4-Benzenetriol derivatives were efficiently prepared from annulation of α,α-bis(ethylthio)carbonyl compounds with α,β-unsaturated carbonyl compounds.
