Oxiranes react smoothly with thiourea in the presence of β-cyclodextrin in water at room temperature under neutral conditions to afford the corresponding thiiranes in excellent yields; the β-cyclodextrin can be recycled.
An efficient catalyst-free synthesis of thiiranes from oxiranes using polyethylene glycol as the reaction medium
作者:Biswanath Das、V. Saidi Reddy、M. Krishnaiah
DOI:10.1016/j.tetlet.2006.09.153
日期:2006.11
A catalyst-free, high-yielding conversion of oxiranes into thiiranes has efficiently been carried out by treatment with KSCN or thiourea at room temperature using polyethyleneglycol (PEG-400) as the reaction medium.