Umpolung Strategy for α‐Functionalization of Aldehydes for the Addition of Thiols and other Nucleophiles
作者:Jakob Blom、Gabriel J. Reyes‐Rodríguez、Henriette N. Tobiesen、Johannes N. Lamhauge、Marc V. Iversen、Casper L. Barløse、Niels Hammer、Matilde Rusbjerg、Karl Anker Jørgensen
DOI:10.1002/anie.201911793
日期:2019.12.2
Nucleophile-nucleophile coupling is a challenging transformation in organic chemistry. Herein we present a novel umpolung strategy for α-functionalization of aldehydes with nucleophiles. The strategy uses organocatalytic enamine activation and quinone-promoted oxidation to access O-bound quinol-intermediates that undergo nucleophilic substitution reactions. These quinol-intermediates react with different
Aldehyde enolates III direct sulfenylation and iodination of aldehyde anions.
作者:P Groenewegen、H Kallenberg、A van der Gen
DOI:10.1016/s0040-4039(01)86424-8
日期:1979.1
Directly generated potassium enolates of aldehydes react with diphenyldisulfide to give the α-sulfenylated aldehydes. Reaction with iodine likewise provides the α-iodo aldehydes.
直接生成的醛的烯醇钾与二苯基二硫化物反应,生成α-亚磺酰基化的醛。与碘反应同样提供α-碘醛。
A novel synthesis of α-sulfenylated aldehydes
作者:Ae. de Groot、B.J.M. Jansen
DOI:10.1016/0040-4039(81)80022-6
日期:1981.1
Ketones are converted into α-sulfenylated aldehydes with addition of one carbon atom via reaction with methoxyphenylthiomethyllithium followed by rearrangement of the adducts.
通过与甲氧基苯基硫代甲基锂反应,加成一个碳原子,将酮转化为α-亚磺酰化醛,然后重排加合物。
GROENEWEGEN P.; KALLENBERG H.; GEN A. VAN DER, TETRAHEDRON LETT., 1979, NO 30, 2817-2820
作者:GROENEWEGEN P.、 KALLENBERG H.、 GEN A. VAN DER
DOI:——
日期:——
GROOT A.; JANSEN B. J. M., TETRAHEDRON LETT., 1981, 22 NO 9, 887-888