Majumdar, K. C.; Muhuri, S. published the artcile< Regioselective synthesis of polyheterocyclic scaffolds by sequential [3,3] sigmatropic rearrangements and pyridine hydrotribromide mediated heterocyclization>, Recommanded Product: (9Z,12Z)-Methyl octadeca-9,12-dienoate, the main research area is aryloxypropynyloxy methylpyranone preparation thionation Claisen rearrangement; aryloxymethyloxopyranothiopyran preparation sigmatropic rearrangement enolization pyridine hydrotribromide regioselective heterocyclization; tetracyclic polyhetero scaffold bromo methyltrihydropyranothiopyranobenzopyranone preparation.
A number of tetracyclic polyhetero scaffolds, e.g., I, have been regioselectively synthesized in 70-75% yield from 4-[(3-aryloxy-2-propynyl)oxy]-6-methyl-pyran-2-ones via thionation of the lactone carbonyl, sequential Claisen rearrangements and pyridine hydrotribromide mediated heterocyclization.
Journal of Heterocyclic Chemistry published new progress about [3,3]-Sigmatropic rearrangement. 112-63-0 belongs to class esters-buliding-blocks, and the molecular formula is C19H34O2, Recommanded Product: (9Z,12Z)-Methyl octadeca-9,12-dienoate.
Referemce:
Ester – Wikipedia,
Ester – an overview | ScienceDirect Topics