Guan, Xiao-Yang published the artcileChiral sterically congested phosphane-amide bifunctional organocatalysts in asymmetric aza-Morita-Baylis-Hillman reactions of N-sulfonated imines with methyl and ethyl vinyl ketones, Recommanded Product: (R)-[1,1′-Binaphthalene]-2,2′-diyl bis(trifluoromethanesulfonate), the publication is European Journal of Organic Chemistry (2008), 2150-2155, database is CAplus.
A series of chiral sterically congested phosphane-amide bifunctional Lewis bases have been prepared and their use in asym. aza-Morita-Baylis-Hillman (aza-MBH) reactions of N-sulfonated imines with activated olefins such as Me and Et vinyl ketone has been investigated under mild conditions. The aza-MBH adducts can be obtained in good-to-excellent yields (≤ 98%) and moderate-to-good enantioselectivities (≤ 91 or 93% ee) in dichloromethane at 20° C.
European Journal of Organic Chemistry published new progress about 126613-06-7. 126613-06-7 belongs to esters-buliding-blocks, auxiliary class Chiral Diphenols, name is (R)-[1,1′-Binaphthalene]-2,2′-diyl bis(trifluoromethanesulfonate), and the molecular formula is C22H12F6O6S2, Recommanded Product: (R)-[1,1′-Binaphthalene]-2,2′-diyl bis(trifluoromethanesulfonate).
Referemce:
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