246136-88-9Relevant articles and documents
Synthesis of dihydrofuro and benzofuro benzopyran-2[H]-one
Soman, Shubhangi S.
, p. 545 - 547 (2007/10/03)
2,5-Dimethyl-9-hydroxy-4-(propen-2-yl)-dihydrofuro[3,2-g][1]benzopyran- 7[H]-one 4 has been prepared from 7,8-dihydroxy-4-methyl coumarin 1 by allylation,Claisen rearrangement and cyclisation, while benzofuro[3,2-g]-11- hydroxy-4-methylbenzopyran2[H]-one 9 has been prepared from 1 by condensing it with 2-bromocyclohexanone followed by cyclisation and dehydrogenation.