Direct Carbon-Carbon Bond Formation via Soft Enolization of Thioesters: An Operationally Simple Mannich Addition Reaction
作者:Don M. Coltart、Julianne Yost、Michelle Garnsey、Mark Kohler
DOI:10.1055/s-0028-1083278
日期:2009.1
Thioesters undergo soft enolization and direct Mannich addition to sulfonylimines on treatment with magnesium bromide ethyl etherate and N,N-diisopropylethylamine. The reactions proceed readily with a range of sulfonylimines and, in the case of 2,4,6-triisopropylphenyl thiopropionate, give moderate to good syn diastereoselectivity. enolates - imines - Mannich addition reactions - magnesium - thioesters
硫酯经过软烯醇化,并在用溴化镁乙酸乙酯和N,N-二异丙基乙胺处理后直接将Mannich加到磺酰亚胺中。该反应与一系列的磺酰亚胺容易进行,并且,在2,4,6-三异丙基硫代丙酸酯的情况下,给予中度至良好的顺式非对映选择性。 烯醇化物-亚胺-曼尼希加成反应-镁-硫酯