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Tandem reactions of nitriles with 2‐aminoethanethiol hydrochloride or amino alcohols in the presence of a catalytic amount of cupric methacrylate (CuII2L4, L = methacrylate) were employed to prepare 2‐thiazolines and 2‐oxazolines under mild reaction conditions. The synthetic procedure showed high selectivity for the synthesis of mono‐ and bis‐thiazolines and oxazolines, and a variety of 2‐thiazolines and 2‐oxazolines was obtained in good to excellent yields.
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Li et al. (2012) studied this question.
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