An Expedient Phosphine-Catalyzed [4 + 2] Annulation:鈥Synthesis of Highly Functionalized Tetrahydropyridines
摘要:
Ethyl 2-methyl-2,3-butadienoate acts as a 1,4-dipole synthon and undergoes [4 + 2] annulation with N-tosylimines in the presence of an organic phosphine catalyst. The resulting adducts, ethyl 6-sub...
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