Epoxides to α-Mercapto-γ-lactones via Ionic Liquid Promoted Mercaptoacetylative Ring-Opening-Ring-Closing Cascade

被引:23
|
作者
Patel, Rajesh [1 ]
Srivastava, Vishnu P. [1 ]
Yadav, Lal Dhar S. [1 ]
机构
[1] Univ Allahabad, Dept Chem, Green Synth Lab, Allahabad 211002, Uttar Pradesh, India
关键词
gamma-lactones; epoxides; ionic liquids; cascade reactions; translactonization; stereoselective synthesis; ENANTIOSELECTIVE SYNTHESIS; ONE-POT; CYCLIZATION; ACID; METATHESIS; EFFICIENT; ESTERS; TRANSFORMATIONS; BUTYROLACTONES; COMPLEXES;
D O I
10.1055/s-0030-1258121
中图分类号
O62 [有机化学];
学科分类号
070303 ; 081704 ;
摘要
Task-specific ionic liquid promoted {[Bmim]OH} one-pot synthesis of alpha-mercapto-gamma-lactones is reported. The present protocol involves regioselective epoxide ring opening and intramolecular translactonisation cascade. A variety of epoxides undergo this ring-opening-ring-closing cascade with 2-methyl-2-phenyl-1,3-oxathiolan-5-one to afford alpha-mercapto-gamma-lactones diastereoselectively in good to excellent yields. After isolation of the product, the ionic liquid [Bmim]OH could be easily recovered and reused without any loss of efficiency.
引用
收藏
页码:1797 / 1802
页数:6
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