Copper-boryl mediated transfer hydrogenation of N-sulfonyl imines using methanol as the hydrogen donor
B2Pin2-assisted copper-catalyzed transfer hydrogenation of aromatic sulfonylimines has been achieved, delivering a variety of aryl/heteroaryl sulfonamides in good to excellent yields under mild reaction conditions and with methanol a
He, Yi,Li, Shi-Guang,Mbaezue, Ifenna I.,Reddy, Angula C.S.,Tsantrizos, Youla S.
supporting information
(2021/03/24)
The first example of saccharin-lithium bromide catalysis: Direct synthesis of N-tosylimines from alcohols
The first procedure to access N-tosylimines directly from alcohols under mild and neutral conditions is reported. The protocol involves saccharin-lithium bromide-catalyzed oxidation of alcohols to aldehydes/ketones with chloramine-T followed by their condensation with the in situ generated oxidation by-product p-toluenesulfonamide in the same reaction vessel to afford N-tosylimines in 40-90% overall yields. The present work opens up a new and efficient synthetic route to N-tosyimines directly from alcohols in a one-pot procedure.
Patel, Rajesh,Srivastava, Vishnu P.,Yadav, La Dhar S.
experimental part
p. 1610 - 1614
(2010/09/05)
A Convenient and General Preparation of N-Sulfonylimines
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Boger, Dale L.,Corbett, Wendy L.
p. 4777 - 4780
(2007/10/02)
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