Environmentally Sustainable and Chemo-selectively Favorable Synthesis of Substituted 2 H-Pyran-2-ones in Water under MWI.

In this paper, a novel synthesis of diversely substituted 2 H-pyran-2-ones via the tandem reaction of 3-hydroxyhexa-4,5-allenic esters in water under the promotion of MWI has been developed. Compared with those reactions carried out in organic solvents, water mediated synthesis of poly-substituted 2 H-pyran-2-ones is not only environmentally sustainable, but also chemo-selectively favorable. [ABSTRACT FROM AUTHOR]