作者:Arvind Jaganathan、Atefeh Garzan、Daniel C. Whitehead、Richard J. Staples、Babak Borhan
DOI:10.1002/anie.201006910
日期:2011.3.7
The asymmetric chlorocyclization of unsaturated amides catalyzed by (DHQD)2PHAL yields oxazoline and dihydrooxazine derivatives (see scheme). The reaction is operationally simple and employs 1–2 mol % of the commercially available (DHQD)2PHAL (hydroquinidine 1,4‐phthalazinediyl diether) catalyst. Different substitution patterns of the olefin as well as aromatic and aliphatic olefin substituents are
(DHQD)2 PHAL催化不饱和酰胺的不对称氯环化反应,生成恶唑啉和二氢恶嗪衍生物(参见方案)。该反应操作简单,并使用1-2 mol%的市售(DHQD)2 PHAL(氢奎尼丁1,4-萘二甲酰二醚)催化剂。烯烃以及芳族和脂族烯烃取代基的不同取代方式具有良好的耐受性。DCDPH = N,N-二氯-5,5-二苯基乙内酰脲。