126597-34-0Relevant articles and documents
m-Quinone methides from m-hydroxy-1,1-diaryl alkenes via excited-state (formal) intramolecular proton transfer mediated by a water trimer [16]
Fischer,Wan
, p. 2680 - 2681 (1998)
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COMPOUNDS
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Page/Page column 13, (2018/01/20)
The invention relates to difluorocyclopropane compounds, methods for their manufacture, and their uses for example as medicaments. According to one aspect, there is provided a compound of general formula (I): wherein X and Y are phenyl groups, one of which is substituted by an ethoxyamine basic side chain; R1 and R2 are independently selected from H or a C1-C6 alkyl group; and wherein one or each of X and Y, and the or each C1-C6 alkyl group, are optionally substituted or further substituted by one or more alkyl, haloalkyl, alkoxy, haloalkoxy, alkenyl, alkynyl or alkylamino radicals of 1 to 20 carbon atoms, and/or by one or more fluoro, chloro, bromo, iodo, hydroxy, oxyalkyl, amino, aminoalkyloraminodialkyl radicals.
Catalytic Asymmetric 1,6-Conjugate Addition of para-Quinone Methides: Formation of All-Carbon Quaternary Stereocenters
Wang, Zhaobin,Wong, Yuk Fai,Sun, Jianwei
supporting information, p. 13711 - 13714 (2015/11/11)
Described herein is a general and mild catalytic asymmetric 1,6-conjugate addition of para-quinone methides (p-QMs), a class of challenging reactions with previous limited success. Benefiting from chiral Bronsted acid catalysis, which allows in situ formation of p-QMs, our reaction expands the scope to general p-QMs with various substitution patterns. It also enables efficient intermolecular formation of all-carbon quaternary stereocenters with high enantioselectivity.