ortho-anisylsulfonyl as a protecting group for secondary amines: Mild Ni0-catalyzed hydrodesulfonylation
A potentially good alternative to the tosyl group (Ts) as a protecting group for amines is N-ortho-anisylsulfonyl (Ans), which is readily cleaved under mild, Ni0-catalyzed reductive conditions (see scheme, acac = acetylacetonate). N-Anisylation of primary amines followed by alkylation and deprotection provides a route to a range of secondary amines.
Milburn, Robert R.,Snieckus, Victor
p. 892 - 894
(2007/10/03)
Catalytic arylation of sulfamoyl chlorides: A practical synthesis of sulfonamides
Commercially available indium(III) triflate is shown to be an efficient catalyst for the sulfamoylation of aromatics.
Frost, Christopher G.,Hartley, Joseph P.,Griffin, David
p. 1928 - 1930
(2007/10/03)
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