Synthesis of New Thienopyridine Derivatives by [3+2]- and [2+2]-Cycloaddition Reactions

[摘要]：The reaction of 6,7-dihydrothieno[3,2-c]pyridine derivatives with 1,3-dipoles, such as a nitrile oxides or nitrile imines, gave novel fused heterocycles. The Staudinger reaction of the starting material was also studied. This reaction was stereoselective and exclusively gave racemic cis-cycloadducts in which the thienopyridine core was fused with a beta-lactam ring.

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