α,β-Unsaturated sulfinylimines derived from α-amino acids undergo aza-Diels–Alder reaction with electron rich dienophiles such as enolethers and enamines. Subsequent elimination of sulfinyl and amine or alkoxy moiety on the resulting cycloadducts affords pyridines derived from α-amino acids.
衍生自
α-氨基酸的α,β-不饱和亚磺
酰亚胺与富含电子的亲二烯体(如烯醇和烯胺)进行aza-Diels-Alder反应。随后消除所得环加合物上的亚磺酰基和胺或烷氧基部分,得到衍生自
α-氨基酸的
吡啶。