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2005
Sulfuration
O 0245
06- 055
Direct, Organocatalytic α-Sulfenylation of Aldehydes and Ketones. — Ketones
and aldehydes undergo direct α-sulfenylation in the presence of a novel pyrrolidine trifluoromethanesulfonamide catalyst. The cyclic ketones (I) give the corresponding
products (III) in high yields, whereas reactions of acyclic ketones form complex mixtures. The reaction is further applied to various aldehydes, giving mainly the
mono-sulfenylated products. In some cases, the corresponding bis-products, e.g. (VI),
are also obtained. — (WANG*, W.; LI, H.; WANG, J.; LIAO, L.; Tetrahedron Lett. 45
(2004) 44, 8229-8231; Dep. Chem., Univ. N. Mex., Albuquerque, NM 87131, USA;
Eng.) — Roy
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