20104-09-0Relevant academic research and scientific papers
Catalytic Geometrical Isomerization of cis-Chrysanthemaldehyde and Related Ketones
Sasaki, Tadashi,Eguchi, Shoji,Ohno, Masatomi
, p. 1469 - 1470 (1980)
cis-Chrysanthemaldehyde isomerized cleanly to the trans-isomer catalyzed with methoxydimethylsulfonium iodide (8) at 25 deg C.Zinc halides as well as silica gel were also demonstrated to be effective catalysts.Related aldehydes and ketones isomerized also
Gold-catalyzed cycloisomerization of cyclopropyl alkynyl acetates: A versatile approach to 5-, 6-, and 7-membered carbocycles
Zou, Yue,Garayalde, David,Wang, Quanrui,Nevado, Cristina,Goeke, Andreas,Ito, Yoshihiko
supporting information; experimental part, p. 10110 - 10113 (2009/05/30)
Nonclassical chirality transfer? Depending on the substitution pattern of propargyl acetates, a gold-catalyzed homologous Rautenstrauch reaction generates either 5- or 6-membered ring systems (see scheme). The stabilization of cationic intermediates is crucial for this reaction to succeed. The underlying principle for the good chirality transfer observed could be gold-stabilized nonclassical carbocations having configurational stability.
