The Role of Steric and Electronic Interactions in the Stereocontrol of the Asymmetric 1, 3-Dipolar Reactions of 5-Ethoxy-3-p-(S)-tolylsulfinylfuran-2 (5 H)-ones with …

…, A Fraile, G González, MR Martín…

Index: Farina, Francisco; Martin, Victoria M.; Sanchez, Felix Heterocycles, 1986 , vol. 24, # 9 p. 2587 - 2592

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Citation Number: 41

Abstract

The addition of diazomethane and diazoethane to (5 S, SS)-and (5 R, SS)-5-ethoxy-3-p- tolylsulfinylfuran-2 (5 H)-ones (1a and 1b) and their 4-methylderivatives (2a and 2b) proceeded in almost quantitative yields and complete regioselectivity. The observed π-facial