Catalytic Asymmetric Synthesis of Spirooxindoles by a Mannich-Type Reaction of Isothiocyanato Oxindoles
作者:Shota Kato、Tatsuhiko Yoshino、Masakatsu Shibasaki、Motomu Kanai、Shigeki Matsunaga
DOI:10.1002/anie.201203005
日期:2012.7.9
Easy access: A strontium/Schiff base complex as catalyst for the title reaction provided straightforward access to enantiomerically enriched spiro[imidazolidine‐4,3′‐oxindole] compounds, as well as a spiro[imidazoline‐4,3′‐oxindole] through a two‐step conversion from the Mannich adduct.
易于获得:锶/席夫碱复合物作为标题反应的催化剂,可通过以下途径直接访问对映体富集的螺[咪唑烷-4,3'-羟吲哚]化合物以及螺[咪唑啉-4,3'-羟吲哚]由曼尼希加合物进行的两步转化。