TY - JOUR AU - Wang, Shuai; Kraus, George A. TI - Annulations with Butenolides and Phthalides: New Entries to Isocoumarins, 3,4-Dihydroisocoumarins, and Benzofurans SN - 0039-7881 SN - 1437-210X PY - 2020 JO - Synthesis JF - Synthesis LA - EN VL - 52 IS - 19 SP - 2821 EP - 2827 ET - 2020/07/16 DA - 2020/09/09 KW - butenolides KW - phthalides KW - sorbate esters KW - epoxy sorbates KW - polycyclic ring KW - isocoumarins KW - benzofurans KW - cyclic annulation AB - The reactions of the anions of butenolides and substituted phthalides with sorbate esters and mono-epoxy sorbate esters furnish isocoumarins, 3,4-dihydroisocoumarins, and benzofurans. The yields range from 41% to 71%. PB - © Georg Thieme Verlag DO - 10.1055/s-0040-1707179 UR - http://www.thieme-connect.com/products/ejournals/abstract/10.1055/s-0040-1707179 ER -