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Studies of [3,3]sigmatropic rearrangements: Rearrangement of 3-(4-p-tolyloxybut-2-ynyloxy)[1]benzopyran-2-one
K C MAJUMDAR, R N DE, A T KHAN, S K CHATTOPADHYAY, K DEY, A PATRA
Published in -
1988
   
Issue: 12
Pages: 777 - 779
Abstract
3-(4-p-Tolyloxybut-2-ynyloxy)[1]benzopyran-2-one (1), when refluxed in chlorobenzene, ethyl benzene, or xylene, gave exclusively 1-(p-tolyloxymethyl) pyrano[2,3-c][1]benzopyran-5(3H)-one (2), whereas through an ionic or radical pathway 2-methyl-1-(p-tolyloxymethyl)furo[2,3-c][1]benzopyran-4-one (3) was the exclusive product.
About the journal
JournalJournal of the Chemical Society, Chemical Communications
Publisher-
ISSN0022-4936