2-[(2-oxo-2-arylethyl)sulfonyl]acetate or ethyl 2-[(2-ethoxy-2-oxoethyl)sulfonyl]acetate, aromatic aldehydes, and 5-aryltetrahydro-3-thiophenone furnished a variety of highly substituted thieno[3,2-c]thiopyran derivatives. This facile transformation presumably occurs via a one-pot domino sequence of enamine formation/aldol condensation/Michael addition/6-exo-trig cyclization/elimination and involves the
1-脯
氨酸催化的3-[(2-氧代-2-芳基乙基)磺酰基]
乙酸乙酯或2-[((2-乙氧基-2-氧代乙基)磺酰基]
乙酸乙酯,芳族醛和5-的三组分反应芳基四氢-3-
噻吩酮提供了各种高度取代的
噻吩并[3,2- c ]
噻喃衍
生物。此容易转化推测通过的烯胺形成/醇醛缩合/迈克尔加成/ 6-一锅多米诺顺序发生外切- TRIG环化/消除,并涉及在三C-C键的单次操作的创建和三个新的代在所有情况下都具有完全非对映选择性的立体中心,并且在第一个中约有四分之一。从5-取代的四氢-3-
噻吩酮衍
生物开始时,非对映异构体比例为7:3。