Synthesis of 1H-pyrano[4,3-b]benzofuran-1-one derivatives via photochemical cyclization of substituted 4H-furo[3,2-c]pyran-4-ones

Constantine V. Milyutin, Boris V. Lichitsky, Valeriya G. Melekhina, Andrey N. Komogortsev, Артем Н. Фахрутдинов, Mikhail E. Minyaev, М. М. Krayushkin