Asymmetric Diels-Alder Reaction of Optically Active 3-(3,3,3-Trifluoropropenylsulfonyl)oxazolidine: Synthesis of (8R)-8-Trifluoromethyl-2-oxa-6-thia-5-azatricyclo[5.2.2.01,5]undecane-6,6-dioxide
摘要:
Asymmetric Diels-Alder reaction of optically active 3-(3,3,3-trifluoropropenylsulfonyl)-1,3-oxazolidine (1) with several dienes gave adducts regio- and stereoselectively in 69-78%de. Acetalization of 2-methoxybutadiene adduct with catechol gave tricyclic sultam-oxazolidine (15), which could be readily deprotonated and gave bridgehead sulfide (16).
Asymmetric Diels-Alder Reaction of Optically Active 3-(3,3,3-Trifluoropropenylsulfonyl)oxazolidine: Synthesis of (8R)-8-Trifluoromethyl-2-oxa-6-thia-5-azatricyclo[5.2.2.01,5]undecane-6,6-dioxide
摘要:
Asymmetric Diels-Alder reaction of optically active 3-(3,3,3-trifluoropropenylsulfonyl)-1,3-oxazolidine (1) with several dienes gave adducts regio- and stereoselectively in 69-78%de. Acetalization of 2-methoxybutadiene adduct with catechol gave tricyclic sultam-oxazolidine (15), which could be readily deprotonated and gave bridgehead sulfide (16).