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AgNTf catalyzed cycloaddition of -acyliminium ions with alkynes for the synthesis of the 3,4-dihydro-1,3-oxazin-2-one skeleton. | LitMetric

AgNTf catalyzed cycloaddition of -acyliminium ions with alkynes for the synthesis of the 3,4-dihydro-1,3-oxazin-2-one skeleton.

Org Biomol Chem

Department of Natural Medicine, School of Pharmacy, Fudan University, 826 Zhangheng Road, Shanghai 201203, China.

Published: June 2022

A catalyzed process for the synthesis of the 4,6-substituted 3,4-dihydro-1,3-oxazin-2-one skeleton has been developed through cycloaddition of generated acyliminium intermediates with alkynes. A range of chain ,-acetals and terminal alkynes were amenable for this mild transformation. As a result, a series of desired cycloaddition products were obtained in moderate to good yields.

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Source
http://dx.doi.org/10.1039/d2ob00900eDOI Listing

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