Formation and reaction of carbonyl ylides. Structure of 2:1-cycloadducts of 1-methoxy-2-benzopyrylium-4-olate with isocyanates
Ibata, Toshikazu; Toyoda, Jiro; Sawada, Masami; Tanaka, Takanori
Журнал:
Journal of the Chemical Society, Chemical Communications
Дата:
1986
Аннотация:
The Cu(acac)2-catalysed (Hacac = pentane-2,4-dione) decomposition of o-methoxycarbonyl-α-diazoacetophenone in the presence of aryl isocyanates gave 2:1-adducts of the intermediate 1-methoxy-2-benzopyrylium-4-olate with isocyanates; the crystal structure of one such adduct has been determined.
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