An annulation reaction to naphthalene-1,4-diols using dimethyl phthalide-3-phosphonates
A regioselective annulation to naphthalene ring systems from dimethyl phthalide-3-phosphonates and electron-deficient olefins is described.
Watanabe,Morimoto,Nogami,Ijichi,Furukawa
p. 968 - 970
(2007/10/02)
DARSTELLUNG UND REAKTIONEN VON 1,3-BIS-(TRIMETHYLSILOXY)-ISOBENZOFURANEN
1,3-Bis-(trimethylsiloxy)-isobenzofuran (2a) can be prepared from dihydro phthalic anhydride.It is not stable under the reaction conditions but can be trapped with dienophiles.The tetraphenyl derivative 2b showed to be more stable towards protonation.
Troll, T.,Schmid, K.
p. 2981 - 2984
(2007/10/02)
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