p. 2245 - 2248
(2007/10/02)tert-butylchlorodiphenylsilane
(E)-3-(5-Oxo-cyclopent-1-enyl)-acrylic acid methyl ester
(E)-3-(1,4-Dioxa-spiro[4.4]non-6-en-6-yl)-acrylic acid methyl ester
1,4-Dioxa-spiro[4.4]non-6-ene-6-carbaldehyde
α-(hydroxymethyl)cyclopentenone ethylene ketal