66298-59-7Relevant academic research and scientific papers
THE REGIO- AND STEREOCHEMISTRY OF THE ALKOXIDE-INDUCED RING-OPENING OF METHOXYMETHYLIDENE-SUBSTITUTED HOMOPHTHALIC ANHYDRIDE
Hutchings, Michael G.,Chippendale, A. Margaret,Ferguson, Ian
, p. 3727 - 3734 (2007/10/02)
Ring-opening of methoxymethylidene-substituted homophthalic anhydride (1) by methoxide occurs by two modes.Attack at the 1-position ("benzoate" carbonyl) leads to a stable acid-ester.A combination of unambiguous syntheses and 1H- and 13C-n.m.r. spectrosco
PHOTOCHEMICAL RING OPENING REACTIONS OF 3-ALKOXYISOCOUMARIN AND 3-HALO-1-ISOQUINOLONE
Kaneko, Chikara,Naito, Toshihiko,Miwa, Chiemi
, p. 2275 - 2278 (2007/10/02)
Irradiation of 3-methoxyisocoumarin (1) in an alcohol afforded two kinds of diester of homophthalic acid (3 and 4) and the mechanism including novel 1,5-sigmatropic methoxy rearrangement from initially formed ketene (5) to the isomeric ketene (6) was proposed.Similar photochemical ring opening reaction of 3-chloro- and -bromo-1-isoquinolones (8 and 9) as well as their novel photoalkoxylation reaction is also described.
